Add, subtract, multiply and divide fractions, work with mixed numbers, simplify exact large fractions and convert decimals.
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Fraction Calculator for United States
US · 12,345.67US customary measurementsRoad distance: miles
United States display and unit preferences. The stated calculation method is used. Review the labeled units before entering your values.
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Your details
Enter a whole number.
Enter a whole number.
Enter a whole number.
Enter a whole number.
Fraction as decimal
0.833
United States · calculated from your inputs
Simplified numerator5
Simplified denominator6
Your calculation, beautifully packaged.Download a report with this result, your inputs, the formula, and assumptions.
How this result was calculated
1/2 add 1/3 = 5/6
Country setup: United States. Displayed measurements are converted to the formula's base units internally.
Assumption: Uses the entered values and the units and conventions described in the method. Check these against your source measurements. United States display and unit preferences. The stated calculation method is used. Review the labeled units before entering your values.
Calculation version 1.0.0 · Support state: generic
Formula and method
Apply the selected arithmetic operation using integer numerators and denominators, then divide both by their greatest common divisor. Denominators and the fraction used as a divisor must be nonzero. Additional modes use exact integer numerators and denominators, reduced by their greatest common divisor.
This calculation uses the values you enter. It runs in your browser and does not request a location or account.
Worked example
With the sample inputs shown, fraction as decimal is 0.83. Change the inputs to model your own case.
Questions people ask
How does the fraction calculator work?
Apply the selected arithmetic operation using integer numerators and denominators, then divide both by their greatest common divisor. Denominators and the fraction used as a divisor must be nonzero.
Does this use live local rates or rules?
Uses the entered values and the units and conventions described in the method. Check these against your source measurements.