A walkthrough, end to end.
- 1
Enter the numerator and denominator for both fractions, then pick the operation.
- 2
The calculator returns the result in fraction form (simplified) and as a decimal.
- 3
Supports negative fractions and mixed inputs.
Fraction operations
Add/subtract: convert to common denominator. Multiply: numerators × numerators, denominators × denominators. Divide: multiply by reciprocal. Simplify: divide both numerator and denominator by their GCD.
What you can do with this.
Cooking and recipe scaling
Scale 3/4 cup × 2/3 = 6/12 = 1/2 cup. Use the calculator when adapting recipes — quick way to keep proportions correct.
Construction measurements
Add 3/8 inch + 5/16 inch = 11/16 inch. The calculator handles common-denominator conversion automatically.
School math homework
Standard arithmetic on fractions for grades 3–8. The calculator gives the simplified answer plus shows the decimal equivalent for verification.
Mixed numbers
Convert 2 1/2 to 5/2 (improper) before entering. The calculator gives improper-fraction output; convert back to mixed manually if needed.
Negative fractions
Use a negative numerator (e.g., −3/4). The calculator handles signs correctly — useful for algebra problems with negative coefficients.
Fraction to decimal
Every result includes the decimal equivalent. Useful when the next step in your problem needs a decimal (e.g., calculator-input or measurement chart). Repeating decimals are shown to several decimal places.
Simplifying fractions
Use multiplication of any fraction by 1/1 — the calculator simplifies the result. Or use add/subtract with 0/1 to get a simplified version of any input.
Fraction calculator 2026 — what's current
Most school math curricula still emphasize fractions through middle school, despite calculator availability. Mental fraction arithmetic remains a fundamental skill — but a calculator handles the bookkeeping faster for real-world use.
Frequently asked.
Convert to improper fraction first: 2 1/2 = 5/2. The calculator works in improper fraction form. After computing, you can convert back to mixed if you prefer.
Most calculators (including this one) automatically simplify by dividing both parts by their GCD. The result is always in lowest terms.
Convert to fraction first if you want exact results. 0.5 = 1/2; 0.333... = 1/3 (technically; but 333/1000 will compute as a non-simplifying fraction).
No. Calculations run entirely in your browser.