Fraction Calculator
Add, subtract, multiply and divide fractions, with simplification and mixed numbers.
Last updated: August 2026
Supports 3/4, 1 1/2 or 0.75
Supports 3/4, 1 1/2 or 0.75
Simplified result
1 1/4
Mixed number
1 1/4
Decimal
1.25
Improper fraction
5/4
Results are shown in simplest form. Accepts fractions like 3/4, mixed numbers like 1 1/2, and decimals like 0.75.
How it works
a/b ± c/d = (ad ± cb)/bd, then simplify by the GCD. Multiplication: (a×c)/(b×d).
Example: 1/2 + 1/4 = 3/4 = 0.75.
Frequently Asked Questions
How do I add fractions?
Multiply the denominators to get a common denominator, adjust the numerators, add them, then simplify. For example 1/2 + 1/4 = 3/4.
What is a mixed number?
A mixed number combines a whole number with a fraction, like 1 1/2. It is the same value as an improper fraction (3/2).
How do I convert a decimal to a fraction?
Write the decimal over 10, 100 or 1000 (depending on decimal places), then simplify. For example 0.75 = 75/100 = 3/4.
How do I divide fractions?
Flip the second fraction (take the reciprocal) and multiply. 3/4 ÷ 1/2 = 3/4 × 2/1 = 6/4 = 1 1/2.