Fraction Calculator
Enter two values and choose an operation. You can use formats like 3/4, 1 1/2, -2, or 0.75.
Simplify & Convert a Fraction
Tip: This tool also converts decimals and mixed numbers into simplified fractions.
What Is an Online Fraction Calculator?
A fraction calculator online helps you solve fraction math quickly and accurately. Instead of manually finding common denominators or reducing answers by hand, you can type your numbers and get an immediate result in simplified form.
This page works as an adding fractions calculator, subtracting fractions calculator, multiplying fractions calculator, dividing fractions calculator, and mixed number calculator—all in one place.
How to Use This Fraction Tool
1) Enter your fractions
You can type values in common classroom formats:
- Simple fraction:
5/6 - Whole number:
7 - Mixed number:
2 3/4 - Decimal:
0.125
2) Choose the operation
Select addition, subtraction, multiplication, or division from the dropdown.
3) Click Calculate
The result appears as:
- Simplified fraction
- Mixed number (when applicable)
- Decimal value
- Percent value
Why Use a Fraction Calculator?
- Speed: Solve homework or worksheet problems fast.
- Accuracy: Avoid sign mistakes and denominator errors.
- Clarity: See both fraction and decimal forms.
- Learning support: Compare your manual work with exact answers.
Fraction Rules (Quick Refresher)
Adding and subtracting fractions
Use a common denominator first, then combine numerators:
a/b + c/d = (ad + bc) / bd
a/b - c/d = (ad - bc) / bd
Multiplying fractions
Multiply straight across:
a/b × c/d = (ac) / (bd)
Dividing fractions
Multiply by the reciprocal:
a/b ÷ c/d = a/b × d/c
Simplifying fractions
Divide numerator and denominator by their greatest common divisor (GCD). Example: 12/18 becomes 2/3.
Common Mistakes to Avoid
- Forgetting to use a common denominator in addition/subtraction.
- Not simplifying the final answer.
- Dropping negative signs.
- Trying to divide by zero (undefined).
When a Fraction Calculator Is Useful
Fractions appear in many real situations: recipe scaling, woodworking measurements, construction, budgeting with partial units, grade averages, and probability. A reliable online fraction solver saves time and helps prevent errors in practical tasks.
FAQ
Does this support mixed numbers?
Yes. Enter values like 3 1/2 and the calculator will convert and simplify correctly.
Can I enter decimals?
Yes. Values like 0.75 are converted into fractions automatically.
Does it reduce answers to lowest terms?
Yes. Results are always simplified.
Is this a free fraction calculator?
Yes, this calculator online fractions tool is free to use.