Fraction Calculator
Add, subtract, multiply, and divide fractions instantly. Includes automatic simplification to lowest terms — perfect for students, teachers, and everyday math problems.
Interactive Calculator Coming Soon
Use the step-by-step rules below while the full interactive tool is being built.
Adding Fractions
Find LCD → convert → add numerators → simplify
1/3 + 1/4 = 4/12 + 3/12 = 7/12
Subtracting Fractions
Find LCD → convert → subtract numerators → simplify
3/4 − 1/3 = 9/12 − 4/12 = 5/12
Multiplying Fractions
Multiply numerators × numerators; denominators × denominators → simplify
2/3 × 3/4 = 6/12 = 1/2
Dividing Fractions
Multiply the first fraction by the reciprocal of the second → simplify
2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6
Frequently Asked Questions
How do you add fractions?▼
Find the Least Common Denominator (LCD), convert both fractions to that denominator, then add the numerators. Simplify the result. Example: 1/3 + 1/4 → LCD=12 → 4/12 + 3/12 = 7/12.
How do you multiply fractions?▼
Multiply the numerators together and the denominators together, then simplify. Example: 2/3 × 3/4 = 6/12 = 1/2.
How do you divide fractions?▼
Multiply the first fraction by the reciprocal of the second (flip the second fraction). Example: 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6.
How do you simplify a fraction?▼
Find the Greatest Common Divisor (GCD) of the numerator and denominator, then divide both by it. Example: 12/18 → GCD is 6 → 2/3.