Fraction Calculator

Enter two fractions, mixed numbers or decimals and choose an operation. The calculator finds the lowest common denominator, simplifies the result and shows each step, so it works for checking homework as well as for quick measurements.

How to use the Fraction Calculator

1. Type the first value, e.g. 3/4, 1 1/2 or 0.25.
2. Type the second value.
3. Pick add, subtract, multiply or divide.
4. Press Calculate to see the mixed number, improper fraction, decimal and steps.

Features

• Accepts proper and improper fractions, mixed numbers, whole numbers and decimals
• Exact arithmetic with integers — no rounding errors
• Simplifies to lowest terms using the greatest common divisor
• Step-by-step working for every operation

Benefits

• Check maths homework and see where a mistake happened
• Combine recipe or woodworking measurements like 2 3/8 + 1 5/16

Frequently asked questions

How do I enter a mixed number?

Put a space between the whole number and the fraction, like 2 3/8. A minus sign in front applies to the whole value, so -1 1/2 means -3/2.

How is a fraction divided?

Dividing by a fraction is the same as multiplying by its reciprocal: 3/4 ÷ 3/8 = 3/4 × 8/3 = 2.

Can I use decimals?

Yes. Decimals with up to 12 places are converted to exact fractions first, so 0.75 becomes 3/4.

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