FORMULAS, SHAPES, TIME, AND NUMBER TOOLS
Fraction Calculator
Calculate arithmetic with two fractions and simplify the exact result.
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Your result
Ready when you are.
Enter your values and choose Calculate. Your inputs stay on this device.
How it works
Uses common-denominator rules for addition/subtraction and cross multiplication for multiplication/division, then reduces by the greatest common divisor.
Assumptions and limits
Denominators must be non-zero whole numbers; division by a zero-valued second fraction is invalid.
About this calculator
The tool returns an exact simplified fraction and decimal equivalent for the selected operation.
What this tool helps you check
Perform fraction arithmetic and reduce the result with numerator and denominator visible.
How to use it
- Review the formula and assumptions shown for this fraction calculator.
- Enter both numerators and non-zero denominators, then select the operation.
- Calculate and check the simplified fraction and decimal.
- For school work, use the displayed rule to verify each step.
Source and update
Last reviewed: 2026-08-22
This tool performs the stated formula locally in your browser using the values you enter.
Frequently asked questions
What does this fraction calculator calculate?
The tool returns an exact simplified fraction and decimal equivalent for the selected operation.
How should I interpret the result?
Check the simplified fraction and decimal. The result changes whenever an input or assumption changes.
Is the result official or guaranteed?
For school work, use the displayed rule to verify each step.
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