Introduction
One of the most common grammar questions ESL learners ask is: “When do I use ‘fewer’ and when do I use ‘less’?” This small difference can make a big impact on your English fluency. In this guide, you will learn the simple rule, see real examples, and avoid the mistakes that even native speakers make. Let’s get started!
What Is “Fewer” vs “Less”?
Both fewer and less mean “a smaller amount or number of something.” However, they are not interchangeable. The key difference lies in the type of noun they describe:
- Fewer is used with countable nouns (things you can count individually, like apples, books, people).
- Less is used with uncountable nouns (things you cannot count individually, like water, time, money).
Think of it this way: if you can put a number in front of the noun (e.g., three apples), use fewer. If you cannot (e.g., some water), use less.
Rules
- Countable nouns → use “fewer”
These are nouns that have both singular and plural forms. Example: fewer chairs (you can count chairs: one chair, two chairs). - Uncountable nouns → use “less”
These nouns do not have a plural form (or are used as a mass). Example: less furniture (you cannot say “one furniture, two furnitures”). - Exceptions with measurements and time
When talking about distance, money, time, or weight, native speakers often use less even with countable units. Example: less than 10 miles (not “fewer than 10 miles”). This is accepted in modern English. - “Less” with percentages and fractions
Use less when the noun is a mass or abstract concept, even if the number is countable. Example: less than 50% of the population. - “Fewer” with plural numbers of people/items
Always use fewer when you can count the individual items. Example: fewer than 20 students.
How to Use It
Follow these simple steps to choose the correct word every time:
- Identify the noun that follows the word. Is it countable or uncountable?
- Ask yourself: Can I count this noun? For example, can you say “two books”? Yes → countable. Can you say “two advices”? No → uncountable.
- Apply the rule: Countable → fewer. Uncountable → less.
- Check for exceptions: If the noun is a measurement (time, distance, money, weight), less is often correct even with numbers.
Here are examples to illustrate each step:
- Step 1: “I need to spend ________ time on social media.” (Noun: time → uncountable) → less.
- Step 2: “She has ________ friends than her brother.” (Noun: friends → countable) → fewer.
- Step 3: “This recipe calls for ________ sugar.” (Sugar is uncountable) → less.
- Step 4: “It’s ________ than 5 kilometers away.” (Distance, exception) → less.
Examples in Sentences
- Fewer people attended the concert this year.
- I have fewer tasks to complete today than yesterday.
- There are fewer cars on the road during the holiday.
- She drinks less coffee now because of her health.
- We need less salt in this soup.
- He earns less money than his coworker.
- They made fewer mistakes on the second test.
- Can you use less water when you shower?
- There were fewer students in class today.
- I have less patience for bad service these days.
- She bought fewer apples because they were expensive.
- We need less noise in the library.
Common Mistakes
Here are the most frequent errors ESL learners make, with corrections:
- Mistake: ❌ “There are less chairs in this room.”
Correct: ✅ “There are fewer chairs in this room.” (Chairs are countable.) - Mistake: ❌ “I have fewer time to finish the project.”
Correct: ✅ “I have less time to finish the project.” (Time is uncountable.) - Mistake: ❌ “She ate less cookies than her sister.”
Correct: ✅ “She ate fewer cookies than her sister.” (Cookies are countable.) - Mistake: ❌ “We need fewer information about the topic.”
Correct: ✅ “We need less information about the topic.” (Information is uncountable.) - Mistake: ❌ “He has fewer than 10 dollars in his wallet.”
Correct: ✅ “He has less than 10 dollars in his wallet.” (Money is a measurement exception.)
Quick Summary
- Fewer + countable nouns (e.g., fewer books, fewer people).
- Less + uncountable nouns (e.g., less water, less time).
- Exception: Use less with measurements (distance, time, money, weight) even with numbers.
- Rule of thumb: If you can count it, use fewer. If you can’t, use less.
- Common trap: Supermarket signs that say “10 items or less” are technically incorrect (items are countable), but widely accepted in informal English.
Practice Exercises
Fill in the blanks with fewer or less. Answers are below.
- I have ________ homework today than yesterday. (homework = uncountable)
- There are ________ students in the advanced class. (students = countable)
- She needs ________ sugar in her tea. (sugar = uncountable)
- We drove ________ than 50 miles. (miles = measurement exception)
- He made ________ mistakes on the final exam. (mistakes = countable)
Answers:
- less
- fewer
- less
- less
- fewer
Conclusion
Mastering the difference between fewer and less will instantly make your English sound more natural and accurate. Remember the simple rule: countable nouns take fewer, uncountable nouns take less, and measurements are the friendly exception. Keep practicing, and soon it will become second nature!
FAQ
1. Can I use “less” with countable nouns in any situation?
In formal writing, no. Use fewer with countable nouns. However, in informal spoken English, many native speakers use less with countable nouns (e.g., “I have less friends”). This is common but considered grammatically incorrect. Stick to the rule for exams and professional writing.
2. Why do supermarket signs say “10 items or less” instead of “fewer”?
This is a famous example of a common error that has become accepted in everyday language. Technically, it should be “10 items or fewer” because items are countable. However, the phrase “10 items or less” is so widespread that it’s now considered standard in informal contexts. For your own writing, always use fewer with countable nouns.
3. Is “less than 10 dollars” correct? What about “fewer than 10 dollars”?
“Less than 10 dollars” is correct and preferred. Even though dollars are countable, we treat money as a mass measurement (like distance or time). So “fewer than 10 dollars” would be grammatically incorrect. The same rule applies to hours, miles, kilograms, and years.
4. What about abstract nouns like “happiness” or “love”? Can I use “fewer” with them?
No. Abstract nouns like happiness, love, advice, information, and knowledge are uncountable. You must use less with them. For example: “She has less happiness now” (not fewer happiness). If you want to count abstract ideas, use phrases like “pieces of advice” or “bits of information.”