KLOORAHow to Add, Subtract, Multiply and Divide Fractions
Published 7 November 2026 by Kloora Tools
Quick answer: use the free Fraction Calculator to add, subtract, multiply and divide fractions and get a simplified answer. It runs in your browser, so nothing you enter is uploaded or stored, and there is no signup.
What is the Fraction Calculator?
Add, subtract, multiply and divide fractions and get a simplified answer. People often search for it as "fraction calculator", "add fractions calculator" or "multiply fractions". This free version works on any phone or computer and needs no download.
How to use the Fraction Calculator
- Open the Fraction Calculator.
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
How it works
To add or subtract, rewrite both fractions over a common denominator and combine the numerators. To multiply, multiply the tops and the bottoms. To divide, multiply by the reciprocal of the second fraction. The result is reduced by dividing by the greatest common divisor.
Worked example
- Input: Numerator 1: 1; Denominator 1: 2; Operation: Add (+); Numerator 2: 3; Denominator 2: 4
- Result: Answer: 5/4; Mixed number: 1 1/4; Decimal: 1.25; Percent: 125%
Common uses
- Check homework and recipe scaling
- Convert a fraction to a decimal and percent
- Simplify a long fraction answer
Second worked example
Here is the same tool with larger numbers, so you can see how the result scales.
- Input: Numerator 1: 1.5; Denominator 1: 3; Operation: Add (+); Numerator 2: 4.5; Denominator 2: 6
- Result: Answer: 5/4; Mixed number: 1 1/4; Decimal: 1.25; Percent: 125%
Tips for the best result
- Check the units and the order of the numbers before you press anything.
- Estimate the answer roughly in your head first, so you can spot an input mistake.
- Keep more decimal places during the work and round only the final answer.
- Try a simple case you already know to confirm the tool does what you expect.
Common mistakes to avoid
- Swapping two inputs, such as base and exponent or x and y.
- Using degrees where radians are expected, or the other way round.
- Rounding too early and carrying the error forward.
- Entering a percentage as a decimal, or a decimal as a percentage.
Fraction Calculator compared with doing it by hand
| Fraction Calculator | By hand or in a spreadsheet | |
|---|---|---|
| Speed | Instant, results update as you type | Slow, you rebuild the steps each time |
| Accuracy | Same standard method every time | Easy to slip on a formula or a unit |
| Privacy | Runs in your browser, nothing uploaded | Depends on the software you use |
| Cost | Free, no signup | Free or paid software needed |
Try it now
Open the Fraction Calculator and try your own numbers or text. If it helps, share it with someone who needs it.
Frequently asked questions
How do I add fractions?
Find a common denominator, add the numerators and simplify the result.
How do I divide fractions?
Multiply the first fraction by the reciprocal of the second.
What does the Fraction Calculator do?
Add, subtract, multiply and divide fractions and get a simplified answer.
How do I use the Fraction Calculator?
1. Enter your values in the fields. 2. The results update instantly as you type. 3. Note or copy the numbers you need.
Is my data safe when I use the Fraction Calculator?
Yes. Everything runs in your browser on your own device. Nothing you type or choose is uploaded, stored or shared, and no AI service is used.
Does the Fraction Calculator work on a phone?
Yes. It works on phones, tablets and computers in any modern browser, with nothing to install.
Do I need an account or a payment to use the Fraction Calculator?
No. It is free, has no daily limit, no watermark and needs no signup.
What information does the Fraction Calculator need?
You enter: Numerator 1, Denominator 1, Operation, Numerator 2, Denominator 2. The results update instantly as you change any value.
How does the Fraction Calculator work?
To add or subtract, rewrite both fractions over a common denominator and combine the numerators.
Can I use this for "add fractions calculator"?
Yes. The Fraction Calculator is built for exactly that, and it also answers searches such as "fraction calculator" and "multiply fractions".
How accurate is the Fraction Calculator?
It uses the standard method and shows results to a sensible precision. For legal, medical, financial or safety decisions, confirm important numbers with a qualified professional.
Where can I find more free tools like the Fraction Calculator?
Kloora Tools has over 150 free tools for CVs, PDFs, images, Urdu, calculators and everyday tasks. Browse them all from the home page.
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