Fraction Calculator
Add, subtract, multiply, divide fractions
Frequently Asked Questions
How do I 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 is 12, so 4/12 + 3/12 = 7/12. The calculator handles this automatically and simplifies the result.
How does the calculator simplify fractions?
It divides both numerator and denominator by their greatest common divisor (GCD). For example, 12/18: GCD is 6, so 12/18 simplifies to 2/3. The result is always shown in lowest terms.
Can I convert between fractions and decimals?
Yes. Enter a fraction like 3/8 to get 0.375, or enter a decimal like 0.625 to get 5/8. The calculator also handles repeating decimals — 0.333... converts to 1/3.
How do I multiply and divide fractions?
To multiply: multiply numerators and denominators directly. 2/3 × 4/5 = 8/15. To divide: multiply by the reciprocal. 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6.
What is a mixed number and how do I convert it?
A mixed number combines a whole number and a fraction, like 3½. To convert to an improper fraction: multiply the whole number by the denominator and add the numerator. 3½ = (3×2+1)/2 = 7/2.