About the Fraction Calculator
Add, Subtract, Multiply and Divide Fractions — Calculate operations between two ordinary fractions, simplify the result to lowest terms and view its decimal form.
Formula or method
For a/b and c/d: addition is (ad+bc)/bd, subtraction (ad−bc)/bd, multiplication ac/bd and division ad/bc. The greatest common divisor reduces the result.
Worked example
1/2 + 1/3 = 5/6, approximately 0.833333. 1/2 × 1/3 = 1/6.
How to use the tool
- Enter two fractions.
- Choose the mathematical operation.
- See the simplified numerator, denominator and decimal.
Common uses
Math homework, ratios, classroom use.
Assumptions and limitations
Use whole-number numerators and nonzero whole-number denominators within safe integer precision. Division by a fraction with zero numerator is undefined.
Frequently asked questions
What does simplify a fraction mean?
Divide numerator and denominator by their greatest common divisor while keeping the value the same.
Privacy and support
Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.