What is Fraction Converter?
Fraction Converter is a versatile tool that helps you convert between three common number formats: decimals, fractions, and percentages. Whether you're working on homework, cooking recipes, or financial calculations, this tool makes conversions quick and accurate.
Why Use This Tool?
Different situations call for different number formats:
Decimals
Fractions
Percentages
Key Features
- Convert between decimals, fractions, and percentages instantly
- Automatic fraction simplification (e.g., 50/100 → 1/2)
- Support for mixed numbers (e.g., 1 1/2)
- Quick reference table of common conversions
- Copy results with one click
How to Use Fraction Converter
Select Your Input Format
Click on one of the three format tabs:
- DEC - For decimal numbers (e.g., 0.75, 1.5, -0.25)
- FRAC - For fractions (e.g., 3/4, 1/3, 7/8)
- PCT - For percentages (e.g., 75, 50, 125)
Enter Your Value
Type your number in the input field. The tool accepts:
Decimals
0.5, 3.14, -0.75Simple Fractions
3/4, 7/8, 1/3Mixed Numbers
1 1/2, 2 3/4Percentages
75, 12.5, 150View and Copy Results
Results appear instantly in all three formats. You can:
- Click the copy icon next to any result to copy it
- Click Copy All Results to copy everything at once
- Click the X button to clear and start over
0.5, 3/4, or 25% to see how the tool works.Features
Instant Three-Way Conversion
Enter a value in any format and instantly see the equivalent in all three formats. No need to click a button—results update as you type.
Automatic Fraction Simplification
Fractions are automatically reduced to their simplest form using the Greatest Common Divisor (GCD) algorithm.
- 50% becomes 1/2, not 50/100
- 0.75 becomes 3/4, not 75/100
- 0.125 becomes 1/8, not 125/1000
Mixed Number Support
Values greater than 1 are displayed as mixed numbers for easier reading:
- 1.5 displays as 1 1/2
- 2.75 displays as 2 3/4
- 150% displays as 1 1/2
Common Fractions Reference
Expand the reference panel to see a table of commonly used fractions with their decimal and percentage equivalents. Great for quick lookups and learning.
One-Click Copy
Copy individual results or all results at once. Perfect for pasting into documents, spreadsheets, or messages.
Keyboard Friendly
Use your keyboard to navigate: type numbers directly, press Escape to clear, and Tab through the interface.
Frequently Asked Questions
How do I enter a mixed number?
Use the FRAC tab and type the whole number, a space, then the fraction. For example: 1 1/2 for one and a half, or 2 3/4 for two and three quarters.
Why does 1/3 show as 0.333...?
Some fractions produce repeating decimals that cannot be expressed exactly. The "..." indicates the decimal repeats infinitely. In practice, you can round to the precision you need.
How does fraction simplification work?
The tool uses the Greatest Common Divisor (GCD) algorithm to find the largest number that divides both the numerator and denominator evenly, then divides both by that number.
Example: For the fraction 50/100:
- GCD of 50 and 100 is 50
- Divide both: 50÷50 = 1, 100÷50 = 2
- Result: 1/2 (simplified form)
Can I convert negative numbers?
Yes, simply include the minus sign before your number. For example: -0.5 converts to -1/2 and -50%.
What's the maximum precision?
The tool handles up to 6 decimal places for most calculations. For extremely precise values, results may be rounded slightly.
Why do some percentages give unexpected fractions?
Some percentages like 33.33% don't convert to exact fractions. The tool finds the closest simple fraction (1/3) while maintaining reasonable accuracy.
Is my data saved anywhere?
No, all calculations happen entirely in your browser. Nothing is sent to any server, and your input is not stored or tracked.
Your privacy is fully protected - this tool works completely offline once loaded.
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