About the Fraction Calculator
Tezmy's Fraction Calculator does fraction maths and shows the answer in its simplest form. Type fractions like 3/4, mixed numbers like 2 1/3, whole numbers or even decimals, choose add, subtract, multiply or divide, and see the result as a simplified fraction, a mixed number and a decimal. It's great for homework, recipes, woodworking and any measurements in inches.
Updated October 2026
How to use the Fraction Calculator
- 1Type the first fraction, like 3/4 or 1 1/2.
- 2Choose +, −, × or ÷.
- 3Type the second fraction.
- 4Read the simplified answer, mixed number and decimal.
How to add and subtract fractions
Fractions need the same bottom number (denominator) before you can add them. For 1/2 + 1/3, turn both into sixths: 3/6 + 2/6 = 5/6. The calculator finds the common denominator for you and simplifies the answer.
How to multiply and divide fractions
To multiply, multiply the tops and the bottoms: 2/3 × 3/4 = 6/12 = 1/2. To divide, flip the second fraction and multiply: 1/2 ÷ 1/4 = 1/2 × 4/1 = 2. A quick rule to remember: keep, change, flip.
Mixed numbers and simplifying
A mixed number like 2 1/3 means 2 plus 1/3, which is 7/3 as an improper fraction. Type it with a space between the whole number and the fraction. Simplifying means dividing top and bottom by the same number until you can't anymore: 8/12 becomes 2/3. Every answer is shown simplified, as a mixed number and as a decimal.
Fractions in real life
- Cooking: doubling 3/4 cup or halving 1 1/2 teaspoons.
- Woodwork and DIY: adding measurements like 5 3/8 in + 2 7/16 in.
- Homework: checking answers and seeing the working in simplest form.
- Money and time: 3/4 of an hour is 45 minutes, 0.75 as a decimal.
Turn decimals into fractions
Type a decimal like 0.375 and the calculator shows it as 3/8. This is handy for converting measurements, or for checking which fraction a decimal answer stands for.
Fractions on your phone
The calculator works in any phone browser, so you can check homework or a recipe on the go. Type fractions with the slash key, like 3/4, and mixed numbers with a space, like 1 1/2. The answer updates straight away in three forms: simplified fraction, mixed number and decimal, so you can use whichever your teacher or recipe asks for. If a fraction answer needs to become a percentage, switch to the Percentage Calculator, and for a list of numbers use the Average Calculator. When you only need a quick sum or product, the Online Calculator is faster than building fractions by hand.
Features
- Add, subtract, multiply, divide
- Mixed numbers like 2 1/3
- Decimals turned into fractions
- Automatic simplifying
- Mixed number and decimal answers
- Instant results
Frequently asked questions
How do you add fractions?
Give them a common denominator, add the tops, then simplify. 1/2 + 1/3 = 3/6 + 2/6 = 5/6.
How do you divide fractions?
Flip the second fraction and multiply. 3/4 ÷ 2/3 = 3/4 × 3/2 = 9/8, which is 1 1/8.
How do I type a mixed number?
Put a space between the whole number and the fraction, like 2 1/3. For negatives, put the minus first: -2 1/3.
What does simplified mean?
The top and bottom are divided by their greatest common factor, so 6/8 becomes 3/4.
Can I use decimals?
Yes. 0.75 is read as 3/4, so you can mix decimals and fractions.
How do I convert a fraction to a decimal?
Divide the top by the bottom: 3/4 = 3 ÷ 4 = 0.75. The calculator shows the decimal for every answer.
Can I use negative fractions?
Yes. Type a minus sign before the fraction, like -3/4.
What is an improper fraction?
A fraction where the top is bigger than the bottom, like 7/4. It can also be written as a mixed number, 1 3/4. The calculator shows both.
Does it show the working?
It shows the simplified answer in three forms. To learn the steps, follow the method in the guide above: common denominator for adding, and keep-change-flip for dividing.