Fraction Calculator
Add, subtract, multiply, divide fractions with exact math.
➗ Simplifies results to lowest terms. Uses exact fraction arithmetic, not decimals.
What Is This Tool?
This calculator performs exact arithmetic on fractions — add, subtract, multiply, and divide. Results are automatically simplified to lowest terms and shown as both a fraction and a decimal.
The Four Operations
- Add/Subtract: Find a common denominator, then combine numerators
- Multiply: Multiply numerators, multiply denominators
- Divide: Flip the second fraction (reciprocal), then multiply
- Results are reduced using the greatest common divisor (GCD)
Example Calculations
- 1/2 + 1/3 = 5/6
- 3/4 × 2/5 = 6/20 = 3/10
- 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6
- 5/2 = 2 1/2 (mixed number)
Why Fractions Matter
Fractions give exact answers where decimals round off. In carpentry, cooking, engineering, and music theory, fractions are the natural language. A measurement of 1/3 inch is more precise than 0.33 inch — and a fraction calculator prevents accumulation of rounding errors.
Frequently Asked Questions
Can it handle mixed numbers like 2 1/2?
Enter 5/2 (the improper form). The result will display as "2 1/2" if it's greater than 1.
About the Fraction Calculator
The Fraction Calculator lets you figure out fraction calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
How to Use This Tool
- Enter the main values the calculator asks for (for example, amount, rate, and time).
- Pick the right unit or option where the tool offers a choice.
- Read the result, which appears instantly below the inputs.
- Adjust any field to test a different scenario — the answer updates without a reload.
- Copy or note the result. Nothing is stored, so close the tab when you're done.
Why Use an Online Calculator?
Browser-based tools like this one have a few real advantages over installed software or manual methods:
- No installation. It opens instantly in any browser, on any operating system.
- Private by default. Everything runs locally, so your data stays on your device.
- Always up to date.There's nothing to update — you always get the latest version when you load the page.
- Free and unlimited. Use it as often as you like, with no account and no caps.
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