Then vs Than: How to Use Each Correctly (2026)

Quick answer: then is about time — sequence, "next", "at that point" ("we ate, then we wrote"). than is about comparison — it follows a comparative word like more, less, better, rather ("more pages than a novella"). The quick test: if the sentence is comparing two things, you want than; if it is telling you when or what happened next, you want then.

Key takeaways

• Then = time or sequence. "Write the draft, then edit it." "It was cheaper back then."
• Than = comparison. It only appears after a comparative: more, less, better, worse, rather, other, different.
• The comparison test: is anything being compared? If yes → than. Is when or what happened next the point? → then.
• They are never interchangeable. Both are real words, so a spell-checker will pass the wrong one — this is a read-back error, not a spelling error.
• The classic slip is then for than in "more then ever" — the sentence compares, so it needs than.

The rule, then the reason

The two words sound identical, which is the whole problem: the ear cannot tell them apart, so the mistake survives when you proofread by listening. They are not variants of one word — they are different words with different jobs.

Then answers when: - "We formatted the interior, then designed the cover." - "Back then, print runs cost more."

Than joins a comparison — it almost always sits next to a comparative word: - "A novel runs longer than a novella." - "She sold more copies than her agent predicted."

Sentence	Word	Why
We printed the proof, then checked it.	then	sequence — what happened next
The hardcover is heavier than the paperback.	than	comparison — heavier than
Editors are busier then than in June.	then / than	then = at that time; than = the comparison
Nothing sells a book better than a good cover.	than	comparative better demands than

The comparison test, step by step

1. Find the two things the sentence is weighing up. Is there a pair?
2. If there is a pair (or a comparative word: more, less, better, faster, other, rather), the word is than.

3. If nothing is compared and the sentence is about when or what comes next, the word is then.

4. "This cover is stronger ___ the last one." → two covers compared → than.

5. "We chose a cover, ___ sent it to print." → sequence → then.
6. "Fewer typos ___ before." → comparison → than.

Where writers over-correct

The frequent error is then where the sentence compares — usually because the sentence sounds like a time clause:

• ❌ "More then ever, readers discover books online." → more … than ever → than.
• ❌ "She is a better editor then her predecessor." → better … than → than.
• ❌ "Other then the price, it was perfect." → other than → than.
• ✅ "We corrected it, then republished." → sequence → correct.

If the sentence contains a comparative word, stop and check the second word: it is almost always than.

Quick self-check before you publish

• Ask: is anything being compared? Yes → than. No → then.
• If you can replace the word with "next", it is then. If you can replace it with "compared with", it is than.
• Still unsure? Rewrite: "Readers discover more books online than before" → "More books are discovered online now" removes the trap entirely.

Frequently asked questions

Is "more then ever" ever correct?

No. The sentence compares the present with the past, so it is more than ever. Then only works as a time word: "It was different back then."

How do I remember which is which?

Letters, not sound: than contains a — as in "compare against". Then contains e — as in "when", the time word. When in doubt, sound them out in a sentence about when — if it fits, it is then.

Does spell-check catch this?

No. Both are correct English words, so a spell-checker passes either one. Only a careful read-back — or an editor — catches the wrong choice.

Is it "no later than" or "no later then"?

than — it compares against a deadline ("no later than Friday"). The later is a comparative, so it demands than.

Where this goes next

Wrong then/than is one of those errors that hides on every page and is faster to catch in a single editing pass than one by one. See our editing and proofreading service.

Related guides

Keep going: how to write a book, the types of book editing, book editing services and proofreading services. For a dictionary definition, see than (Cambridge Dictionary).

Disclosure: Harmony Publishing is a self-publishing company and links to its own services where they match a step. The language guidance here is practical, not a rule for every style guide.