Fraction calculator
Fractions worked out step by step, the way school teaches them.
Output
Paste or type above to see the result here.
Your files stay on your device
This tool runs entirely in your browser. What you paste is processed on your device and is never sent to a server, so it is safe to use with tokens, keys and unpublished text.
Example
Example: a recipe tripled, a board cut to length, and scoops of flour
Everyday sums typed one to a line. Mixed numbers are written with a space (2 1/4); each answer comes with its steps, as a mixed number and as a decimal.
- 2 1/4 cups of flour for one batch, tripled: 6 3/4 cups.
- An 8-foot board (96 inches) with 2 3/8 in and 31 7/8 in cut off leaves 61 3/4 inches.
- A 3/4-cup scoop fills 3 cups in exactly 4 goes.
| Typed | Answer | How |
|---|---|---|
| 2 1/4 × 3 | 27/4 = 6 3/4 = 6.75 | 2 1/4 = 9/4; 9/4 × 3 = 27/4 |
| 96 − 2 3/8 − 31 7/8 | 247/4 = 61 3/4 = 61.75 | Common denominator 8: 768/8 − 19/8 − 255/8 = 494/8, simplified by 2 |
| 3 ÷ 3/4 | 4 | 3 × 4/3 = 12/3, simplified by 3 |
| 5/8 + 3/16 | 13/16 = 0.8125 | 5/8 = 10/16; 10/16 + 3/16 = 13/16 |
| 18/24 | 3/4 = 0.75 | Simplified by 6 |
| 0.375 | 3/8 | The decimal as a fraction |
Every line is worked on its own and brought to lowest terms. A repeating decimal shows the repeat in brackets: 2/3 ÷ 4/5 = 5/6 = 0.8(3).
How it works
- Type a calculation: fractions as 3/4, mixed numbers as 2 1/3, and + − × ÷ (or * and a spaced /), with brackets if you need them.
- Put each calculation on its own line to work several at once.
- Each answer appears with its steps: the common denominator, the working, the result simplified, as a mixed number and as a decimal.
Frequently asked questions
- How do you add fractions with different denominators?
- Find a common denominator — the least common multiple of the two — and raise each fraction to it: 3/4 + 5/6 becomes 9/12 + 10/12 = 19/12, which is 1 7/12. The calculator shows each of those steps.
- How do you divide fractions?
- Multiply by the reciprocal of the second fraction: 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6.
- How do I type a mixed number?
- The whole number, a space, then the fraction: 2 1/3. To divide, use ÷ or : — or a / with spaces around it, since 1/2 without spaces is a fraction.
- How do I simplify a fraction?
- Type it on its own: 18/24 comes back as 3/4, “simplified by 6”, 6 being the greatest number that divides both 18 and 24.
- Can it turn a decimal into a fraction?
- Yes: 0.375 gives 3/8, and decimals can be mixed into a sum, so 0.75 + 1/3 = 13/12 = 1 1/12 = 1.08(3).
- What do the brackets in the decimal mean?
- That the digits repeat: 5/12 = 0.41(6) is 0.416666…, the 6 repeating for ever.
- Is anything uploaded?
- No. It is worked out in your browser, and nothing you type leaves your computer.
Related tools
ℙ GCF and LCM calculator Greatest common factor, least common multiple and the primes behind them. ÷ Long division calculator Long division set out digit by digit, with every step in words. ％ Percentage and discount calculator Discounts, markups, shares and changes, typed the way you would say them. ％ Rule of three calculator Three values in, the fourth out — with the working shown.