Few grammar rules generate as much debate as fewer versus less — and yet the underlying rule is one of the simplest in English. Once you know it, you will apply it correctly every time without thinking.
This guide covers the rule, explains why the confusion arises, and gives you clear examples across a range of writing contexts.
Use fewer with nouns you can count individually (people, words, mistakes, pages).
Use less with nouns that represent a quantity or amount that cannot be individually counted (time, money, effort, information).
The test: can you put a number directly in front of the noun? If yes — three mistakes, four pages, ten people — use fewer. If no — you cannot say “three informations” or “four efforts” — use less.
Countable nouns are things that exist as individual, discrete units. You can count them one by one. Use fewer with countable nouns:
Uncountable nouns — also called mass nouns — represent things that exist as a continuous amount rather than individual countable units. Use less with uncountable nouns:
When referring to a specific number as a quantity rather than individual units, less is used: The report is less than 5,000 words. Here, 5,000 words is being treated as a total measurement rather than 5,000 individual countable items.
Money is typically treated as uncountable in formal writing, even when a specific amount is mentioned: The project cost less than £500.
When distance or time is used as a single measurement: It is less than five miles away. The project took less than three weeks. Here the distance and time are being treated as quantities, not individual countable units.
Fewer people is correct. People are countable — you can count individual people — so fewer is the right choice. Fewer people attended the conference this year. “Less people” is a very common error in everyday speech but is grammatically incorrect in formal writing.
Fewer words is correct in most contexts. Words are countable, so fewer is appropriate: The revised version contained fewer words. However, when words is used as a measurement of total length — The essay should be less than 3,000 words — less is acceptable because the total count is being treated as a measurement.
This is a well-known example of less being used incorrectly in common signage — items are countable, so “10 items or fewer” would be grammatically correct. The incorrect usage has become so widespread that many people accept it, but in formal writing, fewer items is the right choice.
Yes — the fewer/less distinction applies in both British and American English. It is a grammatical rule rather than a spelling convention, so there is no variation between the two varieties.
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