The difference between then and than is one of the most common grammar mistakes made by students of all ages. Both words sound almost identical when spoken quickly, but they have completely different meanings and cannot be swapped. This guide explains the difference between then and than clearly with a comparison table, real world examples, a memory trick, and a quiz so you never confuse them again. If you enjoy this guide, also check out Difference Between Simile and Metaphor and Difference Between Affect and Effect, two more essential English topics for students.
Then refers to time or sequence and means “at that point” or “next”. Than is used for comparisons between two things. If you are comparing two things, use than. If you are talking about time or what happens next, use then.
Then vs Than: Comparison Table
| Feature | Then | Than |
|---|---|---|
| Meaning | At that time / next in order | Used to compare two things |
| Part of speech | Adverb or conjunction | Conjunction or preposition |
| Used for | Time, sequence, consequences | Comparisons and preferences |
| Key signal | Follows “first”, “if”, or describes when | Follows “more”, “less”, “better”, “rather” |
| Example | We ate dinner, then watched TV | She is taller than her brother |
| Common mistake | Writing “then” when comparing sizes | Writing “than” when describing order |
| Memory clue | then = time (both have E) | than = comparison (both have A) |
When to Use THEN
Use then in three situations:
1. To show time sequence (what happens next):
“We finished the exam, then went home.”
“First stir the mixture, then add the water.”
“She knocked on the door, then waited.”
2. To refer to a specific point in time:
“Back then, there were no mobile phones.”
“Then came the moment everyone had been waiting for.”
“By then, the match was already over.”
3. In if-then consequences:
“If you study hard, then you will pass.”
“If it rains tomorrow, then we will cancel the trip.”
“If you are hungry, then eat something.”
When to Use THAN
Use than whenever you are comparing two things. It almost always follows words like more, less, better, worse, higher, lower, faster, slower, rather:
Comparing sizes and amounts:
“Africa is larger than Europe.”
“This bag weighs more than that one.”
“There were fewer students than expected.”
Comparing qualities and abilities:
“She scored higher than everyone in the class.”
“Maths is harder than English for most students.”
“He is a faster runner than his brother.”
Expressing preferences:
“I would rather walk than take the bus.”
“She prefers Science to History rather than the other way around.”
“I would sooner fail honestly than pass by cheating.”
Example 1 – School:
Correct: “Finish your homework, then you can play.”
Correct: “She got better grades than her classmates.”
Wrong: “She got better grades then her classmates.” (comparing, so use than)
Example 2 – Sports:
Correct: “The referee blew the whistle, then the game ended.”
Correct: “Our team scored more goals than the other side.”
Wrong: “Our team scored more goals than the match started.” (time sequence, so use then)
Example 3 – Science:
Correct: “Heat the water first, then add the salt.”
Correct: “Sound travels slower than light.”
Wrong: “Sound travels slower then light.” (comparing speeds, so use than)
Example 4 – History:
Correct: “The First World War ended, then the Second began 21 years later.”
Correct: “World War 2 caused more casualties than World War 1.”
Wrong: “World War 2 caused more casualties then World War 1.” (comparing numbers, so use than)
Example 5 – Everyday life:
Correct: “I was younger then and did not understand.”
Correct: “This phone costs more than my last one.”
Wrong: “This phone costs more then my last one.” (comparing prices, so use than)
The A and E rule – the easiest way to remember forever:
thAn = compArison (both contain the letter A)
thEn = timE (both contain the letter E)
Every single time you are unsure, ask yourself one question: “Am I comparing two things?” If the answer is YES, use than. If the answer is NO and you are talking about time or order, use then. Apply this rule and you will never get it wrong again.
Quick Quiz: Then or Than?
1. She is smarter ___ her classmate.
2. We finished homework, ___ played outside.
3. Africa is larger ___ Europe.
4. First we boil the water, ___ add the pasta.
5. I would rather read ___ watch television.
Difference Between Then and Than: Common Mistakes to Avoid
These are the most frequent errors students make with then and than:
Mistake 1 – “more then”
Wrong: “I need more then three hours to finish.”
Right: “I need more than three hours to finish.”
Why: “more than” is always a comparison of quantity.
Mistake 2 – “better then”
Wrong: “This method is better then the other one.”
Right: “This method is better than the other one.”
Why: “better than” compares two things.
Mistake 3 – “rather then”
Wrong: “I would rather stay then leave.”
Right: “I would rather stay than leave.”
Why: “rather than” expresses a preference between two options.
Mistake 4 – “no sooner then”
Wrong: “No sooner had she arrived then the bell rang.”
Right: “No sooner had she arrived than the bell rang.”
Why: “no sooner than” is a fixed comparison phrase.
Just like knowing the difference between affect and effect helps you write more accurately, mastering then vs than gives you an instant grammar upgrade that teachers notice immediately.
Then and Than in School Exams
The difference between then and than is regularly tested in school English exams at all levels. Examiners set fill-in-the-blank questions where you must choose the correct word. Applying the A and E rule every time is the fastest way to score full marks. Students who master the difference between then and than early gain a significant advantage in English Language exams from primary school right through to high school.
Frequently Asked Questions
Is it “more than” or “more then”?
Always “more than”. This is a comparison of amounts and quantities. “More then” is always incorrect in standard English. Every time you write “more”, the next word should be “than”.
Is it “rather than” or “rather then”?
Always “rather than”. “Rather than” expresses a preference between two options, which makes it a comparison. Never use “then” after “rather”.
Can “then” and “than” ever be used in the same sentence?
Yes. For example: “First study the notes, then write a summary that is longer than one page.” The first use (then) shows sequence; the second use (than) makes a comparison. Both are correct in the same sentence.
Why do people confuse then and than so often?
Because they sound nearly identical in fast speech. The confusion is extremely common even among educated adults. The only reliable way to avoid it is to apply the A and E rule every time you write.
Is “different than” correct or should it be “different from”?
“Different from” is the standard and preferred form in British and international English. “Different than” is more common in American English. For most school exams, “different from” is the safer and more widely accepted choice.
For more English grammar help visit Oxford Dictionary: Than.
Also read: Difference Between Simile and Metaphor | Difference Between Affect and Effect | Difference Between Speed and Velocity
Understanding the difference between then and than is one of the most valuable grammar improvements you can make as a student. Apply the A and E rule every single time: than for comparisons, then for time. The difference between then and than is that simple once you know the rule.
The difference between then and than comes up in everyday writing more than most students realise. Once you apply the A and E rule consistently, the difference between then and than becomes second nature.