Fraction Calculator
Add, subtract, multiply, and divide fractions or mixed numbers with simplified results.
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Add, subtract, multiply, and divide fractions
Fraction Calculator works with fractions and mixed numbers, then shows simplified fraction results along with decimal values. It is useful for homework checks, recipe ratios, craft measurements, and any calculation with different denominators.
Useful For
- Add or subtract fractions with different denominators
- Multiply and divide mixed numbers
- Compare simplified fraction and decimal results
Good To Know
The output is the arithmetic result for the values you enter. For school assignments, also review the required steps and simplification method.
Result Check
Try an example first to understand the input flow. Before submitting, sharing, or copying important output, compare the result with the original source once more.
How It Works
Inputs are calculated or converted in the browser whenever possible. Compare important results with the original source before using them. Reviewed on Jun 27, 2026.
Fraction calculation checks
Input
- Check numerator, denominator, and mixed-number format
- Look for zero denominators and negative-sign placement first
Operation
- For addition and subtraction, review common-denominator results
- For multiplication and division, compare before and after simplification
Use result
- Review simplified fraction and decimal result together
- For homework or documents, also follow the required solution format
Yes. Enter whole number, numerator, and denominator fields to work with mixed and regular fractions.
Results are reduced to simplified fraction form where possible, with decimal values available for checking.
A denominator of zero is invalid, so the tool shows an error and asks you to check the input.