Fraction Calculator
Do math with fractions and mixed numbers and get a simplified answer.
| Simplified | 5/6 |
|---|---|
| Mixed number | 5/6 |
| Decimal | 0.833333 |
How to use it
- Type fractions like 3/4, mixed numbers like 1 1/2 (with a space), whole numbers, or decimals like 0.25.
- Use a minus sign for negatives: -2/3.
- Pick the operation; the answer is reduced to lowest terms.
Formula
a/b + c/d = (ad + bc) / bda/b − c/d = (ad − bc) / bda/b × c/d = ac / bda/b ÷ c/d = ad / bcSimplify by dividing top and bottom by their greatest common divisor
Example
1/2 + 1/3 = (1×3 + 1×2) / (2×3) = 5/6 ≈ 0.833333. 3/4 ÷ 1/2 = (3×2) / (4×1) = 6/4 = 3/2, or 1 1/2 as a mixed number.
Questions
How do I turn a mixed number into a fraction?
Multiply the whole number by the denominator and add the numerator: 2 1/3 = (2×3 + 1)/3 = 7/3.
How do I simplify a fraction?
Divide the top and bottom by the largest number that divides both. 6/8: both divide by 2, giving 3/4.
Related calculators
Last reviewed 2026-10-11. Found a mistake? Tell us.