Grammar
B1–C1
6 min read
Updated 9 June 2026
Quick answer: Fewer is used with countable nouns (fewer people, fewer cars, fewer mistakes). Less is used with uncountable nouns (less water, less traffic, less money). Test: can you count individual items? Use fewer. Is the noun a mass or bulk quantity? Use less.
Comparison Table
| Word | Used With | Test | Example |
|---|
| fewer | countable nouns (can be counted individually) | one student, two students → countable → fewer | Fewer students attended this year. |
| less | uncountable nouns (measured in bulk) | you cannot say "one water, two waters" → uncountable → less | Please use less water. |
Using Fewer (Countable Nouns)
Use fewer with nouns that can be counted as individual, discrete items — things you can make plural and number. If you can say "one ___, two ___," it is countable and takes fewer.
Fewer people came to the meeting than expected.
There are fewer cars on the road on Sundays.
She made fewer mistakes this time.
We need fewer committees and more action.
Using Less (Uncountable Nouns)
Use less with uncountable (mass) nouns — substances, concepts, and qualities that are measured rather than counted. These cannot normally be pluralised.
Try to drink less coffee in the evening.
There is less traffic on this route.
I have less time than I thought.
Spend less money on eating out.
The new process generates less waste.
The Countability Test
Can you say "one ___, two ___"?
Yes (one mistake, two mistakes) → countable → use fewer.
No (you cannot say "one water, two waters") → uncountable → use less.
Countable vs Uncountable: Quick Reference
| Countable (use fewer) | Uncountable (use less) |
|---|
| people, students, cars, houses | water, money, traffic, information |
| mistakes, problems, questions | time, space, energy, advice |
| calories, words, steps, emails | noise, pollution, furniture, luggage |
| days, hours, minutes (individual units) | progress, experience, knowledge |
Exceptions and Edge Cases
Some uses of less with technically countable nouns are accepted as idiomatic:
- Distances and measurements treated as a unit: less than five miles, less than ten years. (not: "fewer than five miles") — because you are treating the quantity as a single block.
- Money as a total sum: less than £50 (treating the amount as a mass). But: fewer than 50 coins (individual coins = countable).
- "No less than": used idiomatically to mean "as many as": No less than 500 people attended. This is a fixed expression.
Common Mistakes
Mistake 1 — "less people" (most common)
✗ There were less people at the event this year.
✓ There were fewer people at the event this year. (people = countable)
Mistake 2 — "10 items or less" (supermarket sign)
The famous sign should technically read "10 items or fewer" because items are countable. However, this is so widespread that many style guides now treat it as accepted informal usage. In formal writing, use fewer.
Mistake 3 — "fewer money"
✗ We have fewer money this month.
✓ We have less money this month. (money = uncountable)
Mistake 4 — "less calories"
✗ This snack has less calories.
✓ This snack has fewer calories. (calories are countable: 100 calories, 200 calories)
Mini-Quiz
Frequently Asked Questions
What is the difference between fewer and less?
Fewer is used with countable nouns — things you can number individually: fewer people, fewer cars, fewer mistakes, fewer calories. Less is used with uncountable (mass) nouns — things measured in bulk rather than counted: less water, less money, less traffic, less time. The test: can you say "one ___, two ___"? If yes, use fewer. If no, use less.
Is "less people" correct?
No — "less people" is a grammatical error in standard English. People are countable (one person, two people), so the correct form is "fewer people." However, this error is so common in everyday speech, even among native speakers, that many people do not notice it. In formal writing, exams, and IELTS, always use "fewer people."
Should supermarket signs say "10 items or less" or "10 items or fewer"?
Technically, "10 items or fewer" is correct, since items are countable. The famous "10 items or less" signs in supermarkets are grammatically incorrect under the standard rule. However, this usage has become so widespread that many modern style guides accept it as established informal usage. For formal writing, academic essays, or IELTS, use "fewer items" to be safe.
Is "less than five miles" correct, even though miles are countable?
Yes — "less than five miles" is correct and standard, even though miles are countable. When a distance, time, or measurement is treated as a single unified quantity rather than individual units, less is used: "less than five miles," "less than three hours," "less than £20." This is a recognised exception to the countable/uncountable rule. Compare: "fewer than five stops on the journey" (stops as individual, discrete steps).
Is "fewer calories" or "less calories" correct?
Fewer calories is correct. Calories are countable — you can say "100 calories, 200 calories" — so the standard rule requires fewer. "Less calories" is a very common error found on food packaging, menus, and health articles. "Fewer calories" is the grammatically correct form and is preferred in formal writing. This is one of the most common fewer/less errors in food and health marketing.
Do native speakers get fewer vs less wrong?
Yes, frequently. "Less" is increasingly used with countable nouns in informal speech, and this trend has been documented in linguistics research since at least the 1980s. Even professional writers, journalists, and broadcasters use "less" with countable nouns. Some linguists argue the distinction is weakening in everyday English. However, for formal writing, exams, and IELTS, the traditional rule (fewer = countable, less = uncountable) is still tested and expected.
What nouns take fewer?
Any noun that can be made plural and counted individually takes fewer: fewer students, fewer houses, fewer cars, fewer mistakes, fewer options, fewer calories, fewer words, fewer emails, fewer employees, fewer steps. A quick check: if you can attach a number to the noun in its plural form (two students, five cars, ten calories), it is countable and takes fewer.
What nouns take less?
Mass/uncountable nouns take less: less water, less money, less time, less traffic, less information, less advice, less energy, less noise, less pollution, less space, less furniture, less luggage, less progress, less knowledge, less experience. These are substances, abstract concepts, or collective quantities that cannot normally be individually counted or pluralised in the relevant sense.
What about nouns that can be both countable and uncountable?
Some nouns switch between countable and uncountable depending on meaning. "Coffee" is uncountable as a substance (less coffee) but countable as a drink order (fewer coffees — three coffees, please). "Experience" is uncountable as general life experience (less experience) but countable as an individual event (fewer experiences). Apply fewer or less based on the meaning in the specific sentence, not the noun in isolation.
How does fewer vs less relate to IELTS writing?
In IELTS Writing Task 1 (describing graphs, charts, and data) and Task 2 (essays), fewer and less appear frequently. Common uses: "fewer people use public transport in rural areas," "less pollution was recorded," "fewer than half of respondents agreed," "cities with less traffic have lower carbon emissions." Correct use of fewer/less demonstrates grammatical accuracy, which contributes to the Grammatical Range and Accuracy band score.