Fraction Calculator
Add, subtract, multiply, divide, simplify, compare, and convert fractions or mixed numbers with exact answers and step-by-step explanations.
What This Fraction Calculator Does
Fraction Operations
Solve addition, subtraction, multiplication, and division problems for regular fractions, improper fractions, mixed numbers, and whole numbers.
Simplify and Convert
Reduce fractions to lowest terms, convert to mixed numbers, and turn any fraction into a decimal or percent instantly.
Core Fraction Rules
Addition and subtraction
a/b ± c/d = (ad ± bc) / bd
When denominators are different, rewrite both fractions with a common denominator before combining the numerators.
Multiplication and division
a/b × c/d = ac / bd
a/b ÷ c/d = a/b × d/c
For division, flip the second fraction and then multiply.
When to Use a Fraction Calculator
Math homework
Check fraction arithmetic and see the intermediate steps that teachers expect.
Measurement conversions
Work with mixed measurements such as 1 1/2 cups, 3/8 inch, or 2 3/4 feet.
Decimal and percent checks
Convert fractions like 3/5 or 7/8 into decimals and percents for reports, grades, and everyday calculations.
Frequently Asked Questions
How do you add fractions with different denominators?
Find a common denominator, rewrite each fraction using that denominator, add the numerators, and simplify the result. For example, 1/2 + 3/4 becomes 2/4 + 3/4 = 5/4 = 1 1/4.
How do you simplify a fraction?
Divide the numerator and denominator by their greatest common divisor (GCD). For example, 18/24 simplifies by dividing both numbers by 6, giving 3/4.
How do you divide fractions?
Keep the first fraction, flip the second fraction, and multiply. For example, 3/4 ÷ 1/2 becomes 3/4 × 2/1 = 6/4 = 3/2 = 1 1/2.
How do you convert a fraction to a decimal or percent?
Divide the numerator by the denominator to get the decimal. Then multiply the decimal by 100 to get the percent. For example, 7/8 = 0.875 = 87.5%.
Can this calculator handle mixed numbers?
Yes. You can enter mixed numbers like 2 1/3, regular fractions like 5/8, or whole numbers like 4. The calculator converts them automatically and shows simplified results.
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