Fraction to Percentage Calculator
Convert fractions into percentages and decimals with the calculation shown clearly.
/
Percentage
37.5%
Decimal
0.375
Simplified
3/8
How the Fraction to Percentage Calculator Works
Enter a numerator and denominator to convert any fraction into a decimal and percentage. The result also shows a simplified fraction when possible.
Formula
Percentage = numerator / denominator x 100. Decimal = numerator / denominator.
Example
For 3/8, 3 divided by 8 is 0.375, which equals 37.5%.
Limitations
The denominator cannot be zero. Repeating decimals are rounded for display while the entered fraction remains exact.
How to use the result responsibly
- Check that every input uses the unit and time period shown beside the field.
- Compare the result with the worked example and formula above.
- For financial, tax, health, or legal decisions, confirm current rules with a qualified professional or the relevant authority.
Frequently Asked Questions
How do I turn a fraction into a percent?
Divide the numerator by the denominator and multiply the result by 100.
Can a fraction be more than 100%?
Yes. An improper fraction such as 5/4 equals 125%.
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Editorially reviewed August 18, 2026. Read our calculation methodology and editorial policy.