All tools · 📊 Math
½ Fraction Calculator
Enter two fractions and pick an operation — we compute the result and simplify to lowest terms. Mixed numbers, improper fractions, and negative values all supported. Decimals can be converted to/from fractions.
Examples
1/4 + 2/311/123/5 × 2/76/350.753/4Frequently asked questions
How is the GCD found for simplification?
Euclidean algorithm — repeatedly take the remainder of the larger divided by the smaller until zero. The last non-zero remainder is the GCD.
Can it handle mixed numbers like 1½?
Yes — enter as 1 1/2 or 3/2. Output can be shown as mixed or improper.
What about repeating decimals?
0.333... → 1/3 (we detect common repeating patterns). For arbitrary repeating sequences, enter as a fraction directly.
About this tool
Fraction Calculator runs entirely in your browser using standard Web APIs. No data is sent to any server. The source for this tool is in our public GitHub repository.
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Why this tool
vs typical free web-tool sites
| 1vw | Typical free site | |
|---|---|---|
| Price | Free | Free |
| Signup required | No | Often (for premium features) |
| Ads inside the tool | No | Yes (banner + video) |
| Data sent to server | No (browser-only) | Yes (inputs analyzed for ads) |
| Total tools | 96 | Often <20 or scattered across sites |
| Bookmarkable URL per tool | Yes | Mixed |
| Loads in under 1s | Yes (static) | Often slow (ad tracking) |
| Multilingual | EN / ES / PT / FR / DE | Usually EN only |
| Open source | Yes | No |