Fraction Calculator — Add, Subtract, Multiply, Divide
Add, subtract, multiply and divide fractions with automatic simplification, decimal and mixed-number output. Client-side.
How to use
- 1 Enter the numerator and denominator of each fraction.
- 2 Choose an operation: + − × ÷.
- 3 The answer is shown fully simplified, plus decimal and mixed-number forms.
Why use this tool
- Add, subtract, multiply and divide fractions with automatic simplification.
- See the result as a simplified fraction, a decimal, and a mixed number.
- Runs entirely in your browser. No signup.
Frequently asked questions
How do you add two fractions?
Give them a common denominator, add the numerators, then simplify: a/b + c/d = (a·d + c·b) / (b·d).
How is the fraction simplified?
Both numerator and denominator are divided by their greatest common divisor (GCD).
What is a mixed number?
An improper fraction written as a whole number plus a proper fraction, e.g. 7/3 = 2 1/3.
Can it handle negative fractions?
Yes — enter a negative numerator or denominator and the sign is normalised in the result.
What is Fraction Calculator?
A fraction calculator performs arithmetic on two fractions and returns the result fully simplified, along with its decimal value and mixed-number form.
Fraction Calculator is a free math utility by Zerethon Tools. Add, subtract, multiply and divide fractions with automatic simplification, decimal and mixed-number output. Client-side. Runs entirely in the browser — no signup, no upload.
- Category
- Math
- Pricing
- Free
- Privacy
- Browser-based
- Signup
- Not required
Privacy
Your data never leaves your browser unless explicitly stated. Fraction Calculator runs entirely client-side — no server upload, no logging, no tracking of your input.
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