Free online tools that just work
Calculators, converters and generators — fast, private and free. Everything runs in your browser, nothing is uploaded.
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View all tools →Percentage Calculator
Calculate X% of a number, what percent one number is of another, and percentage change.
Everyday calculators
Password Generator
Generate strong random passwords with custom length and character sets, using your browser’s cryptographic randomness.
Generators
Word Counter
Count words, characters, sentences and paragraphs in any text, with estimated reading time.
Text tools
Age Calculator
Exact age in years, months and days from a birth date, plus total days lived and time until the next birthday.
Date & time
VAT Calculator
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
Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case and Sentence case — with correct handling of č, ć, š, đ, ž.
Text tools
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- Percentage Calculator Calculate X% of a number, what percent one number is of another, and percentage change.
- Password Generator Generate strong random passwords with custom length and character sets, using your browser’s cryptographic randomness.
- Word Counter Count words, characters, sentences and paragraphs in any text, with estimated reading time.
- Age Calculator Exact age in years, months and days from a birth date, plus total days lived and time until the next birthday.
- VAT Calculator Add VAT to a net price or extract it from a gross amount — Serbian 20% and 10% rates preset, any custom rate supported.