Math & Geometry
Fraction Calculator
Add, subtract, multiply, or divide two fractions and simplify the result.
- Free to use
- Runs in your browser
- Level A · Standard formula
- Last reviewed 2026-08-16
Calculator guide
How to use the Fraction Calculator
Add, subtract, multiply, or divide two fractions and simplify the result. Enter the requested values and select Calculate. The result and supporting values are produced locally in your browser.
Formula
Worked example
1/2 + 1/3 = 5/6.
What to keep in mind
- The calculator simplifies the final fraction to lowest terms.
- Denominators must be nonzero whole numbers.
Methodology
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Verify assumptions, units, and source values for your specific use case.
Review standard: Level A · Standard formula. How calculator reviews work.
Frequently asked questions
What does this calculator calculate?
Add, subtract, multiply, or divide two fractions and simplify the result.
How is the result calculated?
For addition/subtraction use a common denominator; multiplication multiplies numerators and denominators; division multiplies by the reciprocal..
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
The calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.