AtlasCalc🧮 MathbeginnerOffline
Fraction Calculator
Add, subtract, multiply, divide and simplify fractions.
Inputs
Enter your values below.
Result
Your answer appears here.
Enter values and press Calculate — the result appears here.
How it works
The formula behind this calculator.
a/b ± c/d = (a·d ± b·c) / (b·d); simplify by GCD
- a, b, c, d
- Numerators and denominators of the two fractions
To add or subtract fractions, find a common denominator, combine the numerators, then simplify by dividing by the GCD.
Example: 1/4 + 1/6 = (1·6 + 1·4) / 24 = 10/24 = 5/12
Ref: Elementary arithmetic
Tips
- 💡 Always simplify the result to lowest terms. Divide both numbers by their GCD.
- 💡 For mixed numbers, convert to an improper fraction first: a + b/c = (a·c + b)/c.
FAQ
Can I add fractions with different denominators?
Yes. Find the LCM of the denominators, convert each fraction, then add the numerators.