Fraction Simplifier

To write it with the smallest whole numbers that keep the same value, by dividing the top and bottom by their greatest common divisor. 8/12, 4/6 and 2/3 are all equal; 2/3 is the simplified form.

The tool uses the Euclidean algorithm: repeatedly replace the larger number with the remainder of dividing it by the smaller, until one becomes zero. The last non-zero value is the GCD — 4 for 8 and 12.

Yes. Enter it like 2 2/4 and it’s converted to an improper fraction (10/4), reduced to 5/2, and shown back as the mixed number 2 1/2.

It’s reduced like any other and additionally shown as a mixed number. 9/6 becomes 3/2, displayed as 1 1/2. Improper fractions are perfectly valid — the mixed form is just an alternative reading.

The sign is normalised onto the numerator and the denominator stays positive. So -3/-6 and 3/-6 both simplify cleanly — the first to 1/2, the second to -1/2.

The tool tells you so and leaves it unchanged. A GCD of 1 means the numerator and denominator share no common factor, like 3/4 or 5/9.

It’s a quick way to verify the fraction and to use the value elsewhere. It’s rounded to six places, so 2/3 shows as 0.666667.

No — a fraction with a zero denominator is undefined, so the tool shows an error. Any non-zero denominator, positive or negative, is fine.

No. The calculation runs entirely in your browser; nothing you type is sent anywhere and analytics never receives it.