← All Calculators

Fraction Calculator

Add, subtract, multiply, or divide two fractions. Results are automatically simplified.

=

Fraction formulas

Addab + cd = ad + bcbd
Subtractab − cd = ad − bcbd
Multiplyab × cd = acbd
Divideab ÷ cd = ab × dc = adbc
SimplifyDivide top and bottom by their GCF

Worked examples

  1. Add 2/3 + 3/4.

    1. Common denominator 12: 812 + 912 = 1712

    Answer: 17/12 = 1 5/12

  2. Divide 5/6 ÷ 2/9.

    1. 56 × 92 = 4512
    2. Simplify by 3

    Answer: 15/4 = 3¾

  3. Multiply the mixed numbers 2½ × 1⅓.

    1. Convert: 52 × 43 = 206
    2. Simplify by 2

    Answer: 10/3 = 3⅓

Tips & common mistakes

  • Always convert mixed numbers to improper fractions before multiplying or dividing.
  • Use the least common denominator when adding to keep numbers small.