Enter both numerators and denominators.
Arithmetic Calculator
Fraction Calculator
Add, subtract, multiply, or divide two fractions and receive a simplified fraction, decimal value, and mixed-number form.
Instant answer
Formula breakdown
Browser-based
Mobile friendly
Interactive calculator
Enter your values
Use the example values or replace them with your own. Required validation happens before the calculation.
Ready
Calculated answer
Result
Simple workflow
How to use the Fraction Calculator
Follow these steps to get a reliable result and understand how it was produced.
Choose addition, subtraction, multiplication, or division.
Calculate to simplify the result and view its decimal form.
Understanding the calculation
The calculator creates a common denominator for addition or subtraction, then reduces the result using the greatest common divisor.
a/b ± c/d; a/b × c/d; a/b ÷ c/dThe result panel substitutes your numbers into this relationship and shows the important intermediate values.
Common uses
- Recipe scaling and measurements
- Learning equivalent fractions
- Checking arithmetic homework
Accuracy tips
- Denominators cannot be zero.
- The final sign is kept in the numerator.
- Improper fractions are also displayed as mixed numbers.
Helpful answers
Fraction Calculator FAQs
Important details about formulas, inputs, limitations, and result interpretation.
How is a fraction simplified?
The numerator and denominator are divided by their greatest common divisor.
Can I enter negative fractions?
Yes. Negative numerators or denominators are supported.
What is an improper fraction?
It is a fraction whose numerator has an absolute value at least as large as its denominator.
Can I use decimal inputs?
This calculator is designed for integer numerators and denominators.