Fractions made easy
Enter two fractions — including mixed numbers like 1 ⅔ — pick an operation and get the answer simplified to lowest terms, as a mixed number, a decimal and a percentage. The working shows the improper fractions and the unsimplified result so you can follow each step.
Switch to Decimal to fraction to turn a decimal like 0.625 into 5/8 using an exact continued-fraction method.
How to calculate fractions
- 1
Enter the first fraction
Add a whole number for mixed fractions.
- 2
Pick the operation
+, −, × or ÷.
- 3
Enter the second fraction
The answer appears instantly.
Key features
Mixed numbers
Whole-number part supported.
Simplified answers
Always in lowest terms.
Decimal and percent
Shown with every result.
Decimal to fraction
Exact conversion.
Common uses
- Homework: Check fraction sums step by step.
- Cooking: Scale recipe quantities.
- Woodwork and tailoring: Add inch measurements.
Tips and good to know
- To divide by a fraction, multiply by its reciprocal: ¾ ÷ ⅔ = ¾ × 3/2 = 9/8.
- For percentages of fractions, use the Percentage Calculator.
Frequently asked questions
How do I add fractions with different denominators?
Cross-multiply: a/b + c/d = (ad + bc) ÷ bd, then simplify. ¾ + ⅔ = (9 + 8) ÷ 12 = 17/12.
How do I simplify a fraction?
Divide the numerator and denominator by their greatest common divisor. 18/24 ÷ 6 = 3/4.
How do I convert a decimal to a fraction?
Use the Decimal to fraction tab — 0.625 becomes 5/8.