Fraction Calculator - Add, Subtract, Multiply, Divide Fractions Free

How to Use the Fraction Calculator

1. Enter the first fraction — type the numerator and denominator in the two input boxes
2. Enter the second fraction — fill in the numerator and denominator for the second value
3. Select an operation — choose add (+), subtract (−), multiply (×), or divide (÷)
4. View the result — the answer appears instantly as a simplified fraction and as a decimal
5. See the steps — the step-by-step solution shows the common denominator, cross-multiplication, and simplification process
6. Toggle between formats — the result is shown as both an improper fraction and a mixed number where applicable

Perfect for students, teachers, and anyone working with fractions in cooking, construction, or education.

Features

• Four operations — add, subtract, multiply, and divide fractions
• Automatic simplification — results are always reduced to lowest terms
• Step-by-step work — shows the math behind each calculation for learning and verification
• Improper & mixed display — see the result in both formats simultaneously
• Decimal equivalent — shows the decimal value of the result for easy comparison
• Supports negatives — handle positive and negative fractions correctly
• Clear validation — alerts you if a denominator is zero or input is invalid

Use Cases

• Homework help — students can check their work and see the steps to understand the method
• Teaching aid — teachers can demonstrate fraction operations step by step in class
• Recipe scaling — halve a recipe that calls for 3/4 cup of flour by dividing by 2
• Woodworking — add 5/16" and 3/8" for a precise measurement without converting to decimals
• Construction — subtract 1/4" from 3/4" to find remaining material thickness

FAQ

How do I enter a mixed number like 2 1/2?

Enter the whole number separately from the fraction. Convert 2 1/2 to an improper fraction: (2 × 2 + 1)/2 = 5/2. Enter 5 as numerator and 2 as denominator. The calculator accepts improper fractions directly.

Why does the calculator simplify fractions?

Simplification shows the result in its most reduced form — the smallest possible numerator and denominator. This is the standard way to present fraction answers in math and makes comparisons easier.

What happens if I enter 0 as the denominator?

Division by zero is undefined in mathematics. The calculator will show an error if you try to enter a zero denominator. Always ensure your denominator is a non-zero number.

Can this calculator handle multiple operations at once?

The calculator processes two fractions with one operation at a time (A + B, A - B, A × B, A ÷ B). For more complex expressions with multiple operations, do one step at a time, using each result as an input for the next operation.

How do I divide fractions?

To divide by a fraction, multiply by its reciprocal (flip it upside down). For example, 2/3 ÷ 3/4 = 2/3 × 4/3 = 8/9. The calculator shows this step so you can see exactly how it works.