All Tools

A notepad that saves itself in your browser — no account, no upload. Word count and .txt download included.

Text tools

Count words, characters, sentences and paragraphs in any text, with estimated reading time.

Text tools

Convert text between UPPERCASE, lowercase, Title Case and Sentence case — with correct handling of č, ć, š, đ, ž.

Text tools

Convert Serbian Cyrillic text to Latin (Gaj’s alphabet) instantly, in your browser. Handles lj, nj, dž and đ.

Text tools

Convert Serbian Latin text to Cyrillic instantly, in your browser. Correctly maps the lj, nj and dž digraphs.

Text tools

Compare two texts line by line and see exactly which lines were added, removed or unchanged.

Text tools

Generate lorem ipsum placeholder text by paragraphs, sentences or words. Runs in your browser.

Text tools

Spell any word or code with the NATO phonetic alphabet (Alfa, Bravo, Charlie…). Great for reading names over the phone.

Text tools

Write any number out in words, or spell an amount for an invoice or cheque in dinars, euros or dollars.

Text tools

Estimate how long a text takes to read silently or out loud, with adjustable reading speed.

Text tools

Tidy messy text: trim lines, collapse spaces, convert tabs, drop blank lines and strip invisible characters. In your browser.

Text tools

Count characters, words and lines live, and see how much room is left for a tweet, SMS or meta tag.

Text tools

Find which words repeat in your text and how often, with total and unique word counts. Runs in your browser.

Text tools

Strip line breaks from text into one flowing block, with an option to keep paragraph gaps. Runs in your browser.

Text tools

Add a number to the start of every line, with a custom start, step, separator and zero-padding. In your browser.

Text tools

Replace every occurrence of a word or pattern in your text — with whole-word, case-insensitive and regex modes.

Text tools

Translate text to International Morse code and back — letters, digits and punctuation, in your browser.

Text tools

Check whether a word or phrase is a palindrome, ignoring case, spaces and punctuation. Works with Serbian letters.

Text tools

List every rearrangement of a word’s letters, with duplicates removed. Great for puzzles and word games. In your browser.

Text tools

Turn any title into a clean URL slug — with proper Serbian transliteration (đ→dj, š→s) and Cyrillic support.

Text tools

Clean up double spaces, stray tabs, trailing whitespace and blank lines in one pass.

Text tools

Sort lines A→Z or Z→A with correct Serbian alphabet order (č, ć, đ, š, ž) and number-aware sorting.

Text tools

Delete repeated lines from any list while keeping the original order — with optional case-insensitive matching.

Text tools

Count sentences in any text and see average and longest sentence length — useful for readability checks.

Text tools

Count paragraphs and see how words and sentences are distributed across them.

Text tools

Rank how often each word appears in a text, with counts and percentages.

Text tools

Flip text character by character — emoji-safe, with an option to reverse each line separately.

Text tools

Flip the order of words in each line while keeping every word readable — “one two three” becomes “three two one”.

Text tools

Calculate X% of a number, what percent one number is of another, and percentage change.

Everyday calculators

Type a whole expression and see the result live: powers, roots, trigonometry in degrees or radians, factorials.

Everyday calculators

Find the sale price and how much you save from a percentage off — or work out the discount percent from a sale price.

Everyday calculators

Work out what a trip costs in fuel from distance, consumption and fuel price — with round trip and cost splitting between passengers.

Everyday calculators

Work out the tip and total from a bill and a percentage, and split it per person. Runs entirely in your browser.

Everyday calculators

Split a bill evenly among people, with an optional tip, reconciled to the exact total. Runs in your browser.

Everyday calculators

Paste a list of numbers to get the average (mean), plus sum, median, minimum, maximum and range. Runs in your browser.

Everyday calculators

Compare price per unit across products to find the best value on the shelf. Runs in your browser.

Everyday calculators

Work out how much a device costs to run — daily, monthly and yearly — from its power, hours of use and price per kWh.

Everyday calculators

Convert fuel economy between L/100km, km/L and US and UK miles per gallon — instantly, in your browser.

Everyday calculators

Simplify a ratio to its lowest terms, or solve a proportion A:B = C:D for the missing value.

Everyday calculators

Compare two tyre sizes: diameter, sidewall, circumference and how much the speedometer will read off.

Everyday calculators

Work out the hours and minutes between a start and end time, minus your break.

Everyday calculators

A countdown timer with an alarm, quick presets and a title-bar clock. No install, nothing uploaded.

Date & time

Online stopwatch with laps, fastest and slowest lap marked, and a copyable lap table.

Date & time

Exact age in years, months and days from a birth date, plus total days lived and time until the next birthday.

Date & time

Count the exact days between two dates, with a weeks and calendar breakdown. Runs in your browser.

Date & time

Add or subtract days, weeks and months from a date to get the resulting date and its weekday. Runs in your browser.

Date & time

Count working days between two dates with weekends and Serbian public holidays subtracted.

Date & time

Convert a Unix timestamp to a human date (UTC and local) and back, with seconds/milliseconds detection. Runs in your browser.

Date & time

Find what day of the week any date falls on, plus day of year, ISO week and leap-year status. Runs in your browser.

Date & time

Find the ISO 8601 week number for any date, with the week’s Monday–Sunday range. Runs in your browser.

Date & time

Convert a date and time between world time zones, with daylight saving handled automatically.

Date & time

Live countdown to any date and time — days, hours, minutes and seconds, ticking in your browser.

Date & time

Find the date of Easter for any year — both Orthodox and Catholic (Western), and how far apart they fall.

Date & time

Convert a Serbian gross salary to net with the full tax and contributions breakdown — sourced 2026 parameters.

Finance & salary

Find the gross salary behind a Serbian net amount — the exact inverse calculation, not a rough percentage.

Finance & salary

Convert euros to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Monthly installment for any loan from amount, rate and term — with total interest and an independent, bank-neutral breakdown.

Finance & salary

What an employee really costs in Serbia: from the agreed gross to total employer cost (bruto 2), with the full wedge.

Finance & salary

Convert Serbian dinars to euros (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

From property price and down payment to the monthly installment, total interest and loan-to-value — bank-neutral.

Finance & salary

How savings grow when interest earns interest — with regular contributions and a choice of compounding frequency.

Finance & salary

Convert US dollars to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Add VAT to a net price or extract it from a gross amount — Serbian 20% and 10% rates preset, any custom rate supported.

Finance & salary

Convert Swiss francs to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Convert Serbian dinars to US dollars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Convert British pounds to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

How much to put aside each month to reach a target amount by a deadline — with or without interest.

Finance & salary

Convert Australian dollars to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Convert Bosnian convertible marks to Serbian dinars (and back) at the official NBS middle rate, with the rate date shown.

Finance & salary

Check an IBAN’s check digits, length and country before you send a transfer — and build the IBAN for a Serbian account number.

Finance & salary

The full month-by-month amortization table for any loan — printable and downloadable as CSV.

Finance & salary

How much interest and time an extra payment saves — monthly top-ups or a one-time lump sum, compared side by side.

Finance & salary

Calculate simple interest (interest on the principal only) and the final total from an amount, annual rate and time.

Finance & salary

Convert between monthly and annual salary — net, gross and employer cost side by side, with a configurable number of payments.

Finance & salary

Calculate total return on investment (ROI) from an initial and final value, plus the annualised return (CAGR) over a holding period.

Finance & salary

See how long it takes to clear a debt or credit card at a fixed monthly payment, and how much interest it costs.

Finance & salary

Work out profit margin and markup from cost and price, or set a price from a target margin or markup.

Finance & salary

Enter your income and expenses to see what’s left, your savings rate, and a 50/30/20 target split.

Finance & salary

See how much rent you can afford from your monthly income using the 30% rule, with conservative, moderate and stretch bands.

Finance & salary

Find how many units you must sell to cover fixed and variable costs — plus break-even revenue and contribution margin.

Finance & salary

Add up your assets, subtract your debts and see your net worth. Grouped lines for cash, investments, property and liabilities.

Finance & salary

Compare an old and new salary: absolute and percentage increase, monthly and annual difference — net or gross.

Finance & salary

Convert between metres, kilometres, miles, feet, inches and more — instantly, in your browser.

Unit converters

Convert between kilograms, grams, pounds, ounces, tonnes and stone — instantly, in your browser.

Unit converters

Convert between Celsius, Fahrenheit and Kelvin instantly, with all three shown at once. Runs in your browser.

Unit converters

Convert area between square metres, hectares, ares, acres, square feet and more — instantly, in your browser.

Unit converters

Convert between litres, millilitres, cubic metres, gallons, cups and spoons — instantly, in your browser.

Unit converters

Convert data sizes between bytes, KB, MB, GB, TB and the binary KiB, MiB, GiB — decimal and binary side by side.

Unit converters

Convert between km/h, mph, m/s, knots and ft/s — instantly, in your browser.

Unit converters

Convert time durations between seconds, minutes, hours, days, weeks, months and years — instantly, in your browser.

Unit converters

Convert cooking measurements between cups, tablespoons, teaspoons, millilitres, decilitres and fluid ounces.

Unit converters

Convert energy between joules, kilojoules, calories, kcal, watt-hours, kWh and BTU — instantly, in your browser.

Unit converters

Convert power between watts, kilowatts, horsepower (hp and metric PS) and BTU/h — instantly, in your browser.

Unit converters

Convert pressure between bar, psi, pascal, kPa, atmospheres and mmHg — instantly, in your browser.

Unit converters

Convert angles between degrees, radians, gradians, turns, arcminutes and arcseconds — instantly, in your browser.

Unit converters

Resize JPG, PNG and WebP images to exact pixel dimensions in your browser — lock the aspect ratio or set width and height freely. Nothing is uploaded.

Image tools

Compress JPG, PNG and WebP images in your browser — adjust quality, resize and convert with a live size comparison, no uploads.

Image tools

Convert PNG images to JPG in your browser — with adjustable quality, size comparison and no uploading.

Image tools

Rotate JPG, PNG and WebP images 90° at a time in your browser and download the straightened copy. Fully local — nothing is uploaded.

Image tools

Convert WebP images to widely supported JPG in your browser — adjustable quality, batch, no uploads.

Image tools

Crop JPG, PNG and WebP images in your browser — drag a selection, lock an aspect ratio, download the exact cut. Nothing is uploaded.

Image tools

Mirror JPG, PNG and WebP images horizontally or vertically in your browser and download the result. Fully local — nothing is uploaded.

Image tools

Convert JPG to smaller WebP in your browser for faster websites — adjustable quality, batch, no uploads.

Image tools

Convert PNG to much smaller WebP in your browser, keeping transparency — adjustable quality, batch, no uploads.

Image tools

Strip EXIF metadata — GPS location, camera model, timestamps — from JPG, PNG and WebP images in your browser before you share them. Nothing is uploaded.

Image tools

Convert JPG images to lossless PNG in your browser — batch, size comparison, no uploads.

Image tools

Rasterize SVG vectors to PNG in your browser at a chosen resolution, keeping transparency — batch, no uploads.

Image tools

Blur a whole JPG, PNG or WebP image with an adjustable radius in your browser and download the result. Fully local — nothing is uploaded.

Image tools

Turn JPG, PNG and WebP images black and white in your browser, with an intensity slider for partial desaturation. Free and fully local.

Image tools

Encode any image to a Base64 data URI in your browser — ready to paste into CSS, HTML or JSON. Nothing is uploaded.

Image tools

Rasterize SVG vectors to JPG in your browser at a chosen resolution and quality, on a white background — batch, no uploads.

Image tools

Convert WebP to lossless PNG in your browser, keeping transparency — batch, no uploads.

Image tools

Decode a Base64 string or data URI back into an image, preview it, and download the file — all in your browser. Nothing is uploaded.

Image tools

Adjust the brightness and contrast of JPG, PNG and WebP images with live sliders in your browser, then download. Free and fully local.

Image tools

Sharpen a slightly soft JPG, PNG or WebP image with an adjustable amount in your browser and download it. Fully local — nothing is uploaded.

Image tools

Turn photos and scans into one PDF, in page order you choose. Files never leave your device.

PDF tools

Beautify, validate or minify JSON in your browser — with clear error messages. Nothing is uploaded.

Developer tools

Encode text to Base64 or decode it back, UTF-8 safe and URL-safe tolerant. Runs entirely in your browser.

Developer tools

Convert a JSON array of objects into CSV, right in your browser. Choose the delimiter; nested values are kept as JSON.

Developer tools

Convert CSV to JSON in your browser. Header-to-keys, custom delimiter and optional number/boolean parsing.

Developer tools

Test a JavaScript regular expression against text and see every match, with numbered and named capture groups.

Developer tools

Percent-encode text for URLs or decode it back, with component and full-URL modes. Runs in your browser.

Developer tools

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text in your browser using the Web Crypto API.

Developer tools

Decode a JWT to read its header and payload, with expiry and issued-at shown as dates. Local only — no signature verification.

Developer tools

Convert colors between HEX, RGB and HSL, with alpha support and a live swatch. Runs in your browser.

Developer tools

Encode text to HTML entities or decode named, decimal and hex entities back to characters. In your browser.

Developer tools

Test how strong a password is in your browser — see its entropy, estimated crack time and what to improve. Nothing is typed anywhere but your device.

Developer tools

Generate random version-4 UUIDs in bulk, with uppercase, braces and no-hyphen options. Cryptographically random, in your browser.

Developer tools

Minify CSS in your browser — strip comments and whitespace to shrink the file, with a before/after size comparison. Nothing is uploaded.

Developer tools

Break any URL into protocol, host, port, path, query and hash, and list its decoded query parameters. In your browser.

Developer tools

Turn a cron expression into a plain-language schedule, with a per-field breakdown. Supports steps, ranges and macros.

Developer tools

Convert JSON to indented XML in your browser — objects become nested elements, arrays repeat, a custom root name is supported. Nothing is uploaded.

Developer tools

Convert Markdown to clean HTML with a live preview — headings, lists, tables, code and links, all escaped safely.

Developer tools

Parse a query string or URL into decoded key/value pairs and JSON. Repeated keys become arrays. In your browser.

Developer tools

Minify HTML in your browser — remove comments and collapse whitespace while protecting pre, script and style. Nothing is uploaded.

Developer tools

Look up any HTTP status code — 200, 301, 404, 500 and more — with a plain-language explanation. Searchable.

Developer tools

Add UTM tracking parameters to any link so your analytics can tell where campaign traffic comes from.

Developer tools

Find the simplified aspect ratio of any width and height, and resize while keeping that ratio. Runs in your browser.

Developer tools

Check the WCAG contrast ratio between a text and background colour, with AA and AAA pass or fail.

Developer tools

Generate an HMAC (keyed hash) of text with a secret key using SHA-1, SHA-256, SHA-384 or SHA-512 — all in your browser.

Developer tools

Calculate the network, broadcast, host range, mask and host count for any IPv4 address and CIDR prefix.

Developer tools

Generate SEO, Open Graph and Twitter meta tags for your page — copy the HTML straight into your <head>.

Developer tools

Convert between px and rem for any root font size, with a quick reference table. For CSS work.

Developer tools

Escape special regex characters in any text so it matches literally inside a regular expression. Runs in your browser — nothing is uploaded.

Developer tools

Convert text to binary (UTF-8, 8-bit groups) and decode binary back to text, right in your browser.

Developer tools

Convert Unix file permissions between octal (755) and symbolic (rwxr-xr-x), with setuid, setgid and sticky bits.

Developer tools

Look up the MIME type (Content-Type) for a file extension, or find the extension for a MIME type.

Developer tools

Generate secure, URL-friendly Nano IDs in bulk, with a custom length and alphabet. Uses your browser’s CSPRNG.

Developer tools

Build a CSS box-shadow with sliders and copy the code, with a live preview.

Developer tools

Build linear and radial CSS gradients with a live preview and copy the code.

Developer tools

Generate strong random passwords with custom length and character sets, using your browser’s cryptographic randomness.

Generators

Create a QR code from any text or link and download it as PNG or SVG. Generated locally, no watermark, free for any use.

Generators

Generate EAN-13 and EAN-8 barcodes with the check digit calculated for you. Download as SVG or PNG.

Generators

Make a QR code that connects phones to your Wi-Fi with one scan — no typing the password. Generated locally as PNG or SVG.

Generators

Draw random integers in any range — one number or a whole batch, with or without repeats, in your browser.

Generators

Roll one or many dice online — d6 for board games or d4–d100 for tabletop RPGs, with a modifier and running total.

Generators

Flip a virtual coin for a fair heads-or-tails decision, or flip many at once and see the tally.

Generators

Paste a list of names or entries and pick random winners fairly, or shuffle the whole list into a random order.

Generators

Calculate your Body Mass Index from height and weight, with the WHO category and your healthy-weight range. An educational estimate.

Health & fitness

Estimate your daily calories to maintain, lose or gain weight, from BMR and activity level (Mifflin–St Jeor). An educational estimate.

Health & fitness

Estimate a healthy weight for your height and sex, via the Devine, Robinson, Miller and Hamwi formulas plus the BMI range. An educational estimate.

Health & fitness

Estimate body fat percentage from tape measurements using the U.S. Navy method, with fat and lean mass. An educational estimate.

Health & fitness

Turn a daily calorie target into grams of protein, carbs and fat for a balanced, low-carb, high-protein or keto split. An educational estimate.

Health & fitness

Find your training heart-rate zones from age (and optional resting rate). An educational estimate, in your browser.

Health & fitness

Estimate how much water to drink per day from your weight and exercise, in litres and glasses. A general guideline, not medical advice.

Health & fitness

Estimate your fertile window and ovulation day from your last period and your own cycle length. An educational calendar estimate.

Health & fitness

Convert steps to kilometres and back, with stride length worked out from your height and whether you walk or run. Runs in your browser.

Health & fitness

Divide your waist by your height for a quick health-risk screen and see your healthy waist range. An educational estimate, not a diagnosis.

Health & fitness

Divide your waist by your hips and see the sex-specific WHO health-risk band. An educational estimate, not a diagnosis.

Health & fitness

Estimate your one-rep max from a weight and reps using the Epley and Brzycki formulas, with a training-percentage table. An educational estimate.

Health & fitness

Work out running pace, finish time or distance from any two of them — in minutes per km or per mile.

Health & fitness

Estimate your due date from your last period or conception date, with gestational age and trimester dates. An educational estimate.

Health & fitness

Find bedtimes or wake-up times aligned to 90-minute sleep cycles.

Health & fitness

Calculate the area of a rectangle, square, circle, triangle or trapezoid in m², cm² and square feet. Runs in your browser.

Construction & home

Work out how many litres of paint you need from wall area, coats and coverage. Runs in your browser.

Construction & home

Work out how many tiles you need from the area, tile size and a waste margin. Runs in your browser.

Construction & home

Work out how many packs of laminate or flooring you need from the room area and pack coverage. Runs in your browser.

Construction & home

Work out how many bricks or blocks a wall needs from its area, the brick face size, mortar joint and a waste margin.

Construction & home

Work out concrete volume for a slab or footing in m³ and litres, plus an estimate of 25 kg bags. Runs in your browser.

Construction & home

Calculate volume in cubic metres from length, width and height, for any quantity of items — also shown in litres and cubic feet.

Construction & home

Find how many rolls of wallpaper a room needs from its wall length, ceiling height, roll size and pattern repeat.

Construction & home

Turn a stacked cubic metre into solid wood, mass, kWh of heat and cost per kWh by species.

Construction & home

Estimate the sloped surface area of a pitched roof from the building footprint and roof pitch, with a waste margin for materials.

Construction & home

Estimate the cooling BTU and heating power a room needs from its size and conditions. A rough sizing guide.

Construction & home

Estimate fence posts, sections, rails and pickets for a straight run from its length, post spacing and picket size.

Construction & home

Find the volume of a cylindrical or rectangular tank in litres, cubic metres and gallons from its dimensions.

Construction & home

Convert Roman numerals to numbers and back, for values from 1 to 3999. Auto-detects the direction. Runs in your browser.

Math & education

Solve ax² + bx + c = 0 — real or complex roots, discriminant and vertex, with the steps. Runs in your browser.

Math & education

Raise any base to any power — including negative and fractional exponents. Runs in your browser.

Math & education

Convert whole numbers between binary, octal, decimal and hexadecimal at once. BigInt-precise, in your browser.

Math & education

Check whether a number is prime, with its prime factorisation and the nearest primes. Runs in your browser.

Math & education

Find the greatest common divisor and least common multiple of two or more whole numbers. Runs in your browser.

Math & education

Find the logarithm of a number in any base, plus natural log, log₁₀ and log₂. Runs in your browser.

Math & education

Compute nPr and nCr exactly — ordered arrangements and unordered selections of r items from n. Runs in your browser.

Math & education

Compute n! exactly for any non-negative whole number, with full digits and a scientific estimate. Runs in your browser.

Math & education

Find the nth term and the sum of a geometric sequence from its first term, common ratio and length. Runs in your browser.

Math & education

Find the nth Fibonacci number exactly and list the sequence 1, 1, 2, 3, 5, 8… Runs in your browser.

Math & education

Turn points earned out of the total into a percentage score, with a pass/fail check. Runs in your browser.

Math & education

Average a list of values by their weights — for weighted grades, ratings and more. Runs in your browser.

Math & education

Find the nth term and the sum of an arithmetic sequence from its first term, common difference and length. Runs in your browser.

Math & education

Add, subtract, multiply and divide fractions and mixed numbers, with the result reduced to lowest terms.

Math & education

Find the remainder and quotient when dividing two integers, with correct handling of negatives. Runs in your browser.

Math & education

Compare a measured value to the expected one and get the percent error, with direction. Runs in your browser.

Math & education

Enter any one of radius, diameter, circumference or area and get the other three instantly.

Math & education

Turn a decimal into its simplest fraction, including a mixed number for values above one.

Math & education

Reduce a fraction to its lowest terms, showing the divisor, mixed number and decimal.

Math & education

Turn a fraction or mixed number into its decimal value, noting whether it terminates or repeats.

Math & education

Paste your grades to get the average — a simple mean, or a weighted average by credits or hours. Runs in your browser.

Math & education

Sample and population standard deviation, variance, mean and sum from a pasted list of numbers.

Math & education

Convert a percentage to its simplest fraction — e.g. 25% becomes 1/4. Runs in your browser.

Math & education

Solve a right triangle with a² + b² = c²: find the hypotenuse or a missing leg, plus area and perimeter.

Math & education

Convert numbers to and from scientific notation, E notation and engineering notation.

Math & education

Enter three sides to get a triangle’s area, perimeter, angles and type (right, acute or obtuse).

Math & education

Seeding rate in kg/ha from target plant density, thousand-seed weight, germination and purity.

Agriculture & garden

Water needed for an irrigation depth in litres and m³, plus the run time from drip or sprinkler rate.

Agriculture & garden

How many plants fit your plot at a given row and in-row spacing, with density per m² and per hectare.

Agriculture & garden

Turn a kg/ha nutrient target and an NPK grade into the fertilizer rate, total kilograms and bag count.

Agriculture & garden

What a wet lot weighs after drying to the moisture you are paid at, with the water removed and the shrink percentage.

Agriculture & garden

Scale a weighed sample harvest to t/ha and to the whole field, corrected to standard moisture.

Agriculture & garden

Convert a label dose per hectare or per 100 L into the product for one tank, the number of tanks and the total.

Agriculture & garden

Convert jutro, lanac, square fathoms, dunums, ari and hectares — the land measures still used in listings.

Agriculture & garden

Blend the carbon-to-nitrogen ratio of your heap and see how much brown or green material fixes it.

Agriculture & garden

How much grass seed a lawn needs at your sowing rate, with bag count and cost.

Agriculture & garden

Hatch date and schedule for chicken, duck, goose, turkey and quail eggs, with candling and lockdown days.

Agriculture & garden

Sugar and water for a 1:1 or 2:1 bee syrup batch, by sugar quantity or finished volume.

Agriculture & garden