Only one letter separates them, and in fast speech they can sound exactly the same. But they do completely different jobs.
- Then is about time or order: at that time, or next.
- Than is for comparing two things.
Then: time and order
Use then to say when something happens, or what comes next.
I lived in Madrid back then, so I didn't see the news.
We had dinner, and then we watched a film.
It also connects a condition to its result:
If you're tired, then take a break.
You will often hear it in small time phrases: back then, by then, until then, since then and now and then.
Than: comparing
Use than after a comparison, usually a word ending in -er or a phrase with more or less.
This bag is heavier than it looks.
The second film was more exciting than the first.
It also appears in a few fixed phrases: rather than, more than, less than and other than.
I'd rather walk than wait for the bus.
Easy way to tell them apart
Ask yourself one question: am I comparing?
- Yes: use than.
- No, I'm talking about time or order: use then.
Easy way to remember it
Look at the vowels.
- then goes with when and next: time and order.
- than goes with compare: comparisons.
Common mistakes
Comparing? Use than.
❌ My sister is taller then me.
✅ My sister is taller than me.
Saying what comes next? Use then.
❌ Mix the flour and butter, than add the eggs.
✅ Mix the flour and butter, then add the eggs.
After rather? Always than.
❌ I'd rather stay home then go out.
✅ I'd rather stay home than go out.
Good to know
Both of these are correct:
- She's faster than me. This is natural in everyday speech.
- She's faster than I am. This is a little more careful or formal.
Just avoid than I on its own in casual conversation: She's faster than I sounds very stiff.
In a conversation
Mia: Is the new café really better than the old one?
Tom: Much better. Let's go after work, then catch the film.
Mia: Deal. But earlier than six. I'm already hungry.
Quick check
- My brother is older ______ me. (then / than)
- Finish your homework, and ______ you can play. (then / than)
- I'd rather cook at home ______ eat out tonight. (then / than)
- We didn't have smartphones back ______. (then / than)
Answers
- than: you are comparing two people.
- then: it tells you what comes next.
- than: rather is always followed by than.
- then: back then is about time.