Math
Fraction Calculator
How to use this fraction calculator
- Enter the requested values in the calculator.
- Review the result immediately below the fields.
- Use the explanation and example below to check how the result was obtained.
Method and formula
For addition or subtraction, the fractions are converted to a common denominator. Multiplication combines numerators and denominators; division multiplies by the reciprocal.
Worked example
One half plus one third becomes 3/6 + 2/6 = 5/6. Two thirds multiplied by three quarters simplifies from 6/12 to 1/2.
What the result does not include
A denominator cannot be zero, and division by a fraction with a zero numerator is undefined. Inputs are treated as whole-number numerators and denominators.
Frequently asked questions
Are the calculations saved?
No. The calculation runs in your browser. This site does not receive or store the numbers and dates entered into a calculator.
Why can another calculator show a slightly different result?
Results can differ because of rounding, input units, timing assumptions, or extra fees and variables. Keep full precision until the final step and compare the assumptions used by each source.
Can I use this result for an official decision?
Use it as an educational estimate and a way to check your own arithmetic. For medical, financial, academic, or legal decisions, confirm the result with the relevant professional or institution.