Ratio converter
Percentage to Ratio Calculator
Turn a percentage into a simplified ratio to 100.
Convert percentage to ratio
Simplified ratio
Working:
Example: 25% means 25 out of 100, so 25% = 25:100. Divide both parts by 25 to get 1:4.
Why the ratio is written against 100
Percentage literally means “per hundred”. Converting a percentage to ratio form therefore starts with the percentage value compared with 100, then reduces that ratio to simplest form.
Percentage to ratio FAQs
How do you turn a percentage into a ratio?
Write the percentage as a ratio to 100, then simplify. For example, 25% = 25:100 = 1:4.
Can a percentage over 100% be converted to a ratio?
Yes. For example, 150% = 150:100, which simplifies to 3:2.
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