Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers. Auto-simplifies to lowest terms, shows step-by-step work, converts between fractions, mixed numbers, and decimals.
0.(3) = 1/3, 1.1(6) = 7/6About this tool
A fraction calculator does arithmetic on fractions and mixed numbers without losing precision to rounding. Type in two fractions and pick an operation — add, subtract, multiply, or divide — and the result is automatically reduced to lowest terms. Each step is shown in plain text, so it works well for checking homework or following along.
Example: 1 1/2 + 3/4 → 2 1/4 (steps: common denominator 4, 6/4 + 3/4 = 9/4 = 2 1/4). The Simplify tab reduces any fraction (e.g. 12/18 → 2/3), the Fraction → Decimal tab converts values like 3/4 → 0.75, and the Decimal → Fraction tab handles repeating decimals: 0.1(6) → 1/6.
Mixed numbers use the top "whole" field; leave it 0 for proper or improper fractions. Negative numbers are supported in every field.
FAQ
How do I enter a mixed number like 2 3/4? ›
Put 2 in the top "whole" field, 3 in the numerator, and 4 in the denominator. Leave the whole field as 0 for a plain fraction like 3/4.
What does the "GCD" number in the steps mean? ›
GCD stands for greatest common divisor — the largest integer that divides both the numerator and denominator. Dividing both by the GCD reduces the fraction to its simplest form.
Why does 0.(3) convert to 1/3? ›
Parentheses mark the repeating part of a decimal. 0.(3) means 0.3333... forever, which equals exactly 1/3. The tool uses long division to detect the repeating cycle and convert it to a fraction.
Can I divide by zero? ›
No — dividing by a zero fraction or setting a denominator to 0 shows an error, because the result is undefined.