Maths & numbers

Fraction calculator

Perform arithmetic on fractions with step-by-step working. Automatically simplifies to the lowest terms.

  • Free, no sign-up
  • No data stored
  • Reviewed 2026-01-15

Your details

Results

Answer 19/12 3/4 + 5/6 = 19/12
Simplified
19/12
Mixed number
1 7/12
As decimal
1.58333333
As percent
158.3333 %
Unsimplified
38/24
Reciprocal
12/19

Working

Common denominator: :value
:a :op :b = :result
Simplify: ÷2 → :result

Equivalents table

Equivalent fraction Value
38/24 1.583333
57/36 1.583333
76/48 1.583333
95/60 1.583333
114/72 1.583333
152/96 1.583333
190/120 1.583333
228/144 1.583333
304/192 1.583333

About the Fraction Calculator

Enter two fractions and select an operation (add, subtract, multiply or divide). The calculator shows each step: finding the common denominator, performing the operation and simplifying to lowest terms.

How to use the Fraction Calculator

  1. Enter the first fraction (numerator and denominator).
  2. Choose the operation.
  3. Enter the second fraction.
  4. View the result and step-by-step simplification.

Frequently asked questions

How do I add fractions with different denominators?

Find the least common denominator (LCD), convert both fractions, then add the numerators. The calculator shows this process.

Can I enter mixed numbers?

Convert to an improper fraction first: 2 ¾ = (2×4+3)/4 = 11/4. Enter 11 and 4.

What does simplify mean?

Dividing both numerator and denominator by their greatest common divisor (GCD) to get the smallest equivalent fraction.