Fraction Calculator
Add, subtract, multiply and divide fractions.
✓ Professional standard Applies standard mathematical formulas and conventions for accurate, verifiable results.
Fraction Calculator is a free online calculator from Toolinza. Add, subtract, multiply and divide fractions. It runs entirely in your browser — your data is never uploaded — needs no signup, and works on any device. Toolinza offers 293+ free tools used by people across the UK, USA, Canada, Australia, the EU, India, Pakistan, the Middle East and worldwide.
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About the Fraction Calculator
Fractions trip up plenty of people long after school — adding halves and thirds, or dividing one fraction by another, means finding common denominators and simplifying, which is easy to get wrong by hand.
This Fraction Calculator adds, subtracts, multiplies and divides fractions and gives the answer in its simplest form, so you get the right result without the fuss.
How to use the Fraction Calculator
- Enter the first fraction (numerator and denominator).
- Choose the operation.
- Enter the second fraction.
- See the answer, simplified.
Key features of the Fraction Calculator
- Add, subtract, multiply and divide fractions
- Automatically simplifies the result
- Handles common denominators for you
- Clear, correct answers
- Private — calculated in your browser
How the Fraction Calculator works
Each calculator applies the standard mathematical formula for its task — whether that is percentages, areas and volumes, averages, ratios or date arithmetic — following conventional order of operations and calendar rules (including leap years where relevant). Calculations run in your browser and update instantly.
Tips & best practices
- To add or subtract fractions you need a common denominator — the calculator finds it for you and simplifies the result.
- Dividing by a fraction is the same as multiplying by its reciprocal (flip it), which the tool handles automatically.
- Convert a result to a decimal if you need it for measuring or comparing.
Standards & accuracy
Applies standard mathematical formulas and conventions for accurate, verifiable results.
Results follow standard mathematical conventions. For very large or high-precision scientific work, be mindful of normal floating-point rounding, as with any digital calculator.
Who uses the Fraction Calculator?
- Homework and maths study
- Cooking and scaling recipes
- DIY measurements in fractions of an inch
- Any calculation involving fractions
Privacy & security
The Fraction Calculator runs entirely inside your web browser. Your data — whether that is a file, figures or text — is processed on your own device and is never uploaded to a server, stored or shared. There is no signup and no account, so you can use it as often as you like while keeping full control of your information. This makes it a safe choice even for confidential and sensitive work.
Why choose Toolinza?
- 100% free — no hidden charges, watermarks or usage caps.
- Private & secure — your data stays on your device.
- Standards-compliant — accurate results suitable for the UK, USA, Canada, Australia, EU, India, Pakistan, the Middle East and worldwide.
- Works everywhere — desktop, tablet and mobile.
Frequently asked questions
You need a common denominator, then add the numerators. The calculator finds the common denominator, adds them and simplifies the answer automatically.
Yes. The result is always reduced to its simplest form, so you do not have to simplify it yourself.
Yes. It handles division by multiplying by the reciprocal of the second fraction, giving a simplified answer.
Yes. The Fraction Calculator is completely free with no signup, no watermarks and no usage limits. Toolinza is supported by unobtrusive advertising so every tool stays free.
Absolutely. This tool runs entirely in your browser — your data and files are never uploaded to any server, so everything stays private on your own device.
No. The Fraction Calculator works instantly in any modern web browser on desktop, tablet and mobile — Windows, macOS, Linux, Android and iOS.