Fraction Calculator
Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms.
100% client-side · no upload
Result
How to use
- Enter the numerator and denominator for each fraction in the two boxes.
- Click one of the four operator buttons (+, −, ×, ÷) to choose the operation.
- Press = to calculate. The simplified result appears instantly.
Related math tools
- GCD & LCM Calculator — find common divisors used in simplification
- Scientific Calculator — trig, logs, and more
- Prime Factorization — break any integer into prime factors
- Quadratic Equation Solver — solve ax² + bx + c = 0
よくある質問
- Is this fraction calculator free?
- Yes, completely free with no signup, no ads interrupting your work, and no usage limits.
- Does my data leave my device?
- No. All calculations run in JavaScript inside your browser. Nothing is sent to any server.
- Does it work on mobile?
- Yes. The calculator is mobile-first and works on iPhone Safari and Android Chrome without any app install.