Fraction Calculator
Add, subtract, multiply and divide fractions.
Quick Simplify
Decimal to Fraction
ℹ️ About Fraction Calculator
The Fraction Calculator adds, subtracts, multiplies and divides two fractions, reducing the answer to lowest terms with the greatest common divisor. Each result is also given as a decimal to four places, a percentage and a mixed number, so a homework answer can be checked in whichever form it was asked for. Two extra panels handle single jobs: simplifying any fraction on its own, and turning a decimal such as 0.75 into 3/4. It computes locally in your browser.
💡 Use Cases
📋 How to use
Type the numerator and denominator of the first fraction into the two stacked boxes on the left.
Choose +, minus, x or division from the operator dropdown between the two fractions.
Type the numerator and denominator of the second fraction; the green result fraction updates as you type.
Read the four tiles under it for the answer as Decimal, Percentage, Mixed Number and Simplified.
Use Quick Simplify to reduce any fraction to its lowest terms by entering both numbers and clicking Simplify.
In Decimal to Fraction, type a value such as 0.75 and click Convert to turn it back into a fraction.
💎 Pro Tips
- Enter your values carefully — small differences in inputs can lead to large changes in the Fraction Calculator result, especially for long time periods.
- Use the Fraction Calculator to compare multiple scenarios side by side. Open the tool in several tabs to see how different assumptions impact your outcome.
- Bookmark this Fraction Calculator and return whenever your situation changes — small updates in income, rates, or expenses are easy to recompute.
- Export or copy the result before closing the tab. Since the Fraction Calculator stores no data server-side, your inputs reset when you navigate away.
- Combine this Fraction Calculator with our other financial tools (loan, tax, budget calculators) for a more complete financial picture.
❓ Frequently Asked Questions
Yes. The Fraction Calculator is 100% free, with no signup, no paywall, no limits, and no watermarks on results. You can use it as often as you need.
No. The Fraction Calculator runs entirely in your browser. Your inputs stay on your device and are never transmitted to our servers, guaranteeing privacy.
The Fraction Calculator uses industry-standard formulas and returns mathematically precise results based on the inputs you provide. Always verify with a professional advisor for major decisions.
Yes. The Fraction Calculator is fully responsive and works on iOS, Android, and all modern mobile browsers with no app install required.
After the initial page load, most calculations run offline because the logic runs in JavaScript on your device. If you lose connection mid-session, you can usually keep calculating.
While the Fraction Calculator provides accurate computations, it does not replace professional advice. For tax, legal, medical, or major investment decisions, consult a certified advisor.