Math Tools
Fraction Calculator
Add, subtract, multiply, and divide fractions, then simplify the result and view the decimal form.
Fraction Calculator
Add, subtract, multiply, and divide two fractions, then simplify the result instantly and view its decimal form.
First fraction
Second fraction
Result
Simplified fraction
5/6
Decimal
0.833333
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What this calculator does
This calculator adds, subtracts, multiplies, or divides two fractions, then simplifies the final answer and shows its decimal form.
What is a fraction calculator?
A fraction calculator is a math tool that helps you add, subtract, multiply, and divide fractions without doing each step by hand. You enter two fractions, choose the operation, and the calculator shows the simplified answer along with its decimal value.
This is useful for students, teachers, parents, homework help, exam preparation, recipes, measurement problems, and everyday math where fractions need to be solved quickly and accurately.
How to add, subtract, multiply, and divide fractions
Adding fractions
Find a common denominator if needed, add the numerators, keep the denominator, then simplify.
Subtracting fractions
Find a common denominator if needed, subtract the numerators, keep the denominator, then simplify.
Multiplying fractions
Multiply numerator by numerator and denominator by denominator, then reduce the answer to lowest terms.
Dividing fractions
Flip the second fraction to its reciprocal, multiply, and then simplify the result.
Fraction operation rules table
| Operation | Rule | Example |
|---|---|---|
| Add fractions | Use a common denominator, add numerators, then simplify. | 1/2 + 1/3 = 5/6 |
| Subtract fractions | Use a common denominator, subtract numerators, then simplify. | 3/4 - 1/4 = 1/2 |
| Multiply fractions | Multiply numerator by numerator and denominator by denominator. | 1/2 × 1/3 = 1/6 |
| Divide fractions | Multiply the first fraction by the reciprocal of the second. | 1/2 ÷ 1/3 = 3/2 |
Examples for fraction addition
These quick examples show how fraction operations simplify into final answers and decimals.
| Expression | Simplified fraction | Decimal |
|---|---|---|
| 1/2 + 1/3 | 5/6 | 0.833333 |
| 3/4 + 1/8 | 7/8 | 0.875 |
| 2/5 + 3/10 | 7/10 | 0.7 |
How to simplify fractions
Simplifying a fraction means reducing it to lowest terms. To do that, divide both the numerator and denominator by their greatest common factor until no further reduction is possible.
For example, 6/8 can be simplified to 3/4 because both 6 and 8 can be divided by 2. A good fraction calculator simplifies the answer automatically so you do not need to reduce it manually.
Fraction to decimal conversion
Fractions can also be written as decimals by dividing the numerator by the denominator. For example, 1/2 equals 0.5 and 3/4 equals 0.75.
Seeing both the simplified fraction and decimal form is useful in school math, measurements, finance, recipes, and practical calculations where decimal values are easier to compare.
Where a fraction calculator is useful
A fraction calculator is helpful in classroom math, homework, standardized test preparation, construction measurements, cooking, baking, and any situation where fractional values must be combined or compared.
It is especially useful when fractions have different denominators or when division by fractions needs to be solved quickly and accurately.
Fraction calculator FAQ and common fraction questions
How do you add fractions with different denominators?
Find a common denominator, convert both fractions, add the numerators, keep the denominator, and simplify the final answer.
How do you subtract fractions?
Use a common denominator if necessary, subtract the numerators, keep the denominator, and reduce the answer to lowest terms.
How do you multiply fractions?
Multiply the numerators together and the denominators together, then simplify the result.
How do you divide fractions?
Change division into multiplication by flipping the second fraction into its reciprocal, then multiply and simplify.
Can a fraction calculator simplify answers automatically?
Yes. A good fraction calculator reduces the result to simplest form and often shows the decimal equivalent too.
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