Fraction Calculator — Add, Subtract, Multiply & Divide Fractions
Use this free fraction calculator to add, subtract, multiply or divide any two fractions. Enter your numerators and denominators and get an instant result as a simplified fraction, decimal, mixed number and percentage — with a full step-by-step solution showing exactly how it was calculated.
Fraction Calculator
First Fraction
Second Fraction
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How to Use the Fraction Calculator
Select your operation using the tabs — Add, Subtract, Multiply or Divide. Enter the numerator and denominator for each fraction then click Calculate. The result is shown as a simplified fraction with a complete step-by-step breakdown.
How Fraction Operations Work
Adding fractions — find the lowest common denominator (LCD) then add the numerators. For example 1/4 + 1/6: LCD is 12, giving 3/12 + 2/12 = 5/12.
Subtracting fractions — same as addition but subtract the numerators once they share a common denominator.
Multiplying fractions — multiply the numerators together and the denominators together. For example 2/3 × 3/4 = 6/12 = 1/2.
Dividing fractions — flip the second fraction then multiply. For example 2/3 ÷ 3/4 = 2/3 × 4/3 = 8/9.
How Are Fractions Simplified?
A fraction is simplified by dividing both the numerator and denominator by their Greatest Common Divisor (GCD). For example 6/12 — the GCD is 6 — simplifies to 1/2.
FAQs
What is a fraction?
A fraction represents a part of a whole. The numerator (top number) shows how many parts you have. The denominator (bottom number) shows how many equal parts make up the whole.
How do you add fractions with different denominators?
Find the lowest common denominator first then convert both fractions to that denominator before adding the numerators. The calculator does this automatically.
What is a mixed number?
A mixed number combines a whole number and a fraction. For example 7/4 = 1 and 3/4. The calculator shows the mixed number form for any improper fraction in your result.
What is an improper fraction?
An improper fraction has a numerator larger than the denominator — for example 7/4. It can be converted to a mixed number (1 and 3/4).
Is this calculator free?
Yes completely free with no sign-up needed.