To turn a percent into a fraction, write it over 100 — because percent means parts per hundred — then reduce to lowest terms. If the percent has a decimal, first multiply the top and bottom by a power of ten to clear it. This calculator returns the reduced fraction, the decimal, and the mixed number for percents over 100.
Reviewed: June 20, 2026 · Author: Naveen P N, Founder — AI Calculator · Verified against: exact fraction reduction, recomputed in code.
The method
A whole-number percent like 75 goes straight over 100 as 75/100, then reduces by the greatest common divisor (25) to 3/4. A decimal percent like 12.5 first becomes 12.5/100; multiplying top and bottom by 10 clears the decimal to 125/1000, which reduces by 125 to 1/8. Percents above 100 produce improper fractions that can be written as mixed numbers.
Worked examples
75%:
12.5% (decimal):
150% (over 100):
Note that 0.5% becomes 5/1000 = 1/200, and a repeating value such as 33⅓% can't be recovered from a rounded 33.33 — that yields the literal 3333/10000. Enter the exact percent you mean for an exact fraction.
Frequently Asked Questions
Put it over 100 and reduce. 25% = 25/100 = 1/4. Clear decimals first for 12.5% → 1/8.
1/8. 12.5/100 → 125/1000 → 1/8.
3/4 — 75/100 divided by 25.
It's improper: 150% = 3/2 = 1½.
Only terminating ones. 33.33% gives 3333/10000, not 1/3.