Fraction Calculator
MATHAdd, subtract, multiply, and divide fractions easily.
ℹ️ About Fraction Calculator
Fractions trip people up long after school, especially when the denominators differ or the answer needs simplifying. This calculator adds, subtracts, multiplies and divides two fractions and returns the result already reduced to lowest terms — plus the decimal equivalent. Whether you are halving a recipe, working out measurements, or helping with homework, it removes the error-prone steps of finding common denominators and simplifying by hand.
📖 How to Use Fraction Calculator
1
Enter the two fractions
Type the numerator and denominator for each fraction.
2
Pick an operation
Choose add, subtract, multiply or divide.
3
Read the reduced answer
The result is shown in lowest terms, with the decimal value.
4
Use it or copy it
Copy the fraction or decimal into your work.
💡 Examples
Different denominators
INPUT
1/2 + 1/3→
OUTPUT
5/6 (0.8333…)Multiplication auto-simplifies
INPUT
3/4 × 2/3→
OUTPUT
1/2 (0.5)Division by a fraction
INPUT
2/3 ÷ 1/6→
OUTPUT
4 (4.0)📊 Common Fraction → Decimal → Percent
Handy conversions for the fractions that come up most often.
| Fraction | Decimal | Percent |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/3 | 0.333… | 33.3% |
| 2/3 | 0.666… | 66.7% |
| 1/4 | 0.25 | 25% |
| 3/4 | 0.75 | 75% |
| 1/5 | 0.2 | 20% |
| 1/8 | 0.125 | 12.5% |
| 3/8 | 0.375 | 37.5% |
| 1/10 | 0.1 | 10% |
🚀 Pro Tips
✓To add or subtract, the denominators must match — the calculator finds the least common denominator for you.
✓To multiply, multiply the tops and the bottoms; to divide, flip the second fraction and multiply.
✓An answer is in "lowest terms" when the numerator and denominator share no common factor other than 1.
✓A fraction greater than 1 (like 5/4) is an improper fraction; it equals the mixed number 1¼.
✓Convert a fraction to a percentage by turning it into a decimal and multiplying by 100 — 3/4 = 0.75 = 75%.