Fraction to Percentage Converter — Convert a Fraction to % Instantly

Fractions and percentages both describe a part of a whole, just in different formats. This tool converts a fraction — like 3/8 — directly into its percentage form, which is often much easier to compare against other values at a glance.

This is common in exam results (marks as a fraction of total marks), cooking and recipe scaling, and any situation where a ratio needs to be communicated as a percentage.

Formula

Percentage = (Numerator ÷ Denominator) × 100

Divide the top number by the bottom number, then multiply by 100.

Worked Example

Worked example

Question: Convert 3/8 to a percentage.

Step 1 — Divide the numerator by the denominator: 3 ÷ 8 = 0.375

Step 2 — Multiply by 100: 0.375 × 100 = 37.5

Answer: 3/8 is 37.5%.

Recurring decimals

Some fractions do not convert to a clean number — 1/3 becomes 33.333...%, which is usually rounded to 33.3% for practical purposes. This tool rounds sensibly so the result is always readable.

Mixed numbers

If you have a mixed number like 2 and 1/4, first convert it to an improper fraction (9/4) before converting to a percentage — 9 ÷ 4 × 100 = 225%.

Frequently Asked Questions

How do I convert a fraction to a percentage?

Divide the numerator (top number) by the denominator (bottom number), then multiply the result by 100.

What is 1/4 as a percentage?

1/4 is 25% — one quarter of the whole.

What is 7/10 as a percentage?

7/10 is 70%.

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