Fraction Calculator
Add, subtract, multiply, or divide fractions — simplified automatically.
Quick Reference
Add/Sub: Convert to common denominator, then add/subtract numerators
Multiply: Multiply numerators and denominators directly
Divide: Multiply by the reciprocal of the second fraction
Simplify: Divide both parts by their GCD
Frequently Asked Questions
How do you add fractions with different denominators?▼
Find the least common denominator (LCD), convert each fraction, then add the numerators. For example: 1/3 + 1/4. LCD = 12. Convert: 4/12 + 3/12 = 7/12.
How do you divide fractions?▼
Flip the second fraction (take its reciprocal) and multiply. For example: 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6. This is the 'keep, change, flip' method.
What is a mixed number?▼
A mixed number combines a whole number and a fraction. For example: 7/4 = 1¾. The whole part is the quotient and the fraction part is the remainder over the original denominator.
How do you simplify a fraction?▼
Divide both the numerator and denominator by their Greatest Common Divisor (GCD). For example: 12/16 — GCD(12,16) = 4, so 12÷4 / 16÷4 = 3/4.
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