Fraction vs Percent

When to use each in English, with meaning, register, and examples.

Fraction

Top 2,000 (common)B2noun

Percent

Top 2,000 (common)B1
 FractionPercent
Pronunciation🇬🇧 /["/ˈfrækʃn/"]/🇺🇸 /["/ˈfrækʃn/"]/🇬🇧 //pəˈsɛnt//🇺🇸 //pərˈsɛnt//
MeaningA part of a whole, often shown as a number with a top and a bottom.A part of a whole, shown as a fraction out of 100.
ExampleOnly a small fraction of a bank's total deposits will be withdrawn at any one time.She received a 15 percent discount on her purchase.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2B1
Part of speechnoun
Collocationslarge, significant, sizeable, fraction of, just a fraction, only a fraction, vulgar, decimal, improper, express something aspercent off, percent increase, percent of total, percent change, percent rate
Antonymswhole, entiretywhole, entire, total
Common mistakesConfused with 'fractional' which means something that is in part., Omitting the word 'of' when describing parts, e.g., saying '1/2 cake' instead of '1/2 of a cake'., Using it incorrectly with non-numerical contexts.Confused with 'percentage' — remember 'percent' is always out of 100., Using 'percent' without a number — it needs to quantify something., Mixing up 'percent' with 'per cent' — both are correct, but usage may vary by region.
Usage notesUsed in math and everyday situations to describe dividing things. It may not be used in casual conversations unless discussing specific math topics.Commonly used in mathematics, business, and statistics. Not usually used in casual conversation without context.

Frequently asked questions: Fraction vs Percent

What's the difference between Fraction and Percent?

Fraction: A part of a whole, often shown as a number with a top and a bottom. Percent: A part of a whole, shown as a fraction out of 100.

Are Fraction and Percent the same CEFR level?

Fraction: B2, Percent: B1 on the CEFR scale.

Can I use Fraction and Percent interchangeably?

Not always. Fraction and Percent are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.