comparisons then (than)

Writers often swap then and than because they sound similar. Use than for comparisons and then for time, order, or consequence. The sections below give a short rule, quick tests, many real-world wrong/right pairs, rewrite templates, and memory tricks to fix sentences fast.

Quick answer

Than = comparison (A is larger than B). Then = time, sequence, or result (first this, then that).

If you can replace the word with "compared to" or "rather than," use than.
If you can replace it with "after" or "next," use then.

Core explanation

Than joins two items to show difference, degree, or preference: taller than, more than, rather than.

Then marks when something happens or the order/result of actions: first X, then Y; if X, then Y; back then.

Comparison: She writes better than I do.
Sequence/result: We ate lunch, then we met the client.
Quick swap: "compared to" → than; "after/next" → then.

Grammar: comparison patterns and pitfalls

Use than after comparative adjectives/adverbs (bigger than, more carefully than) and in phrases like rather than or other than. Keep compared items parallel and allow ellipsis when a verb is implied.

Comparative + than: faster than, less expensive than, more interested than.
Ellipsis: "She is taller than I" (implied "am" or "do") is correct.
Parallel structure: "better at grammar than at punctuation."

Wrong: He is smarter then the other applicants.
Right: He is smarter than the other applicants.
Wrong: More people prefer our app then the old one.
Right: More people prefer our app than the old one.

Spacing and punctuation

There's no special spacing rule for then/than-normal spacing applies. The frequent problem is meaning, not typography.

Spellcheck often misses this mistake because both words are valid; proofread for meaning.
Read aloud: if you naturally say "after" or "next," it's then; if you say "compared with," it's than.
Punctuation won't fix a wrong-word choice; commas only affect clause boundaries.

Wrong: I like him better then, honestly.
Right: I like him better than, honestly, anyone else I've dated.
Wrong: The team met then discussed the results (meant comparison).
Right: The team met, then discussed the results.

Hyphenation and compound modifiers

When a comparative phrase modifies a noun, hyphenate to avoid ambiguity: better-than-average results, less-than-ideal conditions. Never use then in these compounds.

Use hyphens in modifiers: a better-than-average score; a less-than-ideal outcome.
If hyphenation confuses readers, rewrite: "results that were better than expected."

Wrong: She had a better-then-average score on the test.
Right: She had a better-than-average score on the test.
Right: The outcome was less-than-ideal.

Real usage: work, school, casual examples

Short, realistic sentences by context. Each shows the correct word and, where useful, a common wrong form for contrast.

Work:
Wrong: Our Q2 results were better then Q1. →
Right: Our Q2 results were better than Q1.
Work:
Right: The prototype is more robust than the earlier build.
Work:
Wrong: I'd like to offer the role to Sara then Mark. →
Right: I'd like to offer the role to Sara rather than Mark.
School:
Wrong: I prefer studying physics then chemistry. →
Right: I prefer studying physics to chemistry.
School:
Right: The sample was less concentrated than we expected.
School:
Wrong: She performed better then her classmates. →
Right: She performed better than her classmates.
Casual:
Wrong: I'll have coffee then tea. (ambiguous) →
Right: I'll have coffee, then tea. or I'd prefer coffee to tea.
Casual:
Right: He's funnier than anyone I know.
Casual:
Wrong: More people liked the movie then the book. →
Right: More people liked the movie than the book.

Try your own sentence

Test the whole sentence, not just the phrase. Context usually makes the right answer clear.

Examples: common wrong/right pairs (quick scan)

Copy the correct sentence to replace a mistake.

Wrong: She's taller then her brother. →
Right: She's taller than her brother.
Wrong: I would rather study math then history this semester. →
Right: I would rather study math than history this semester.
Wrong: Our sales this quarter were higher then last quarter. →
Right: Our sales this quarter were higher than last quarter.
Wrong: I'd prefer coffee then tea in the morning. →
Right: I'd prefer coffee to tea in the morning.
Wrong: More people use our app then our competitor's. →
Right: More people use our app than our competitor's.
Wrong: He is smarter then anyone in the class. →
Right: He is smarter than anyone in the class.
Wrong: She chose the red shirt, then the blue one. (meant comparison) →
Right: She chose the red shirt rather than the blue one.
Wrong: The experiment was more successful then expected. →
Right: The experiment was more successful than expected.

Rewrite help: fix your sentence in three steps

Three quick steps: 1) Ask whether you mean sequence/time or comparison. 2) Substitute "after/next" or "compared to" to test. 3) If unclear, rephrase with "rather than" or "compared with/to."

Comparison template: X is [comparative] than Y. Example: "This version is faster than the old one."
Sequence template: First X, then Y; or "If X, then Y."
Rephrase template: "Rather than X, Y" or "Compared with X, Y" to avoid the choice entirely.

Rewrite:
Wrong: "I'd like to hire you then John." → "I'd like to hire you rather than John."
Rewrite:
Wrong: "We will review the draft then submit it." → "We will review the draft, then submit it."
Rewrite:
Wrong: "She arrived later then planned." → "She arrived later than planned."
Ambiguous: "I'll call you then." → Clarify: "I'll call you after the meeting."

Memory tricks and quick checks

Two swap tests and one letter cue make this easy to remember.

Swap test: Replace the word with "compared to"-if it fits, use than. Replace it with "after/next"-if that fits, use then.
Letter cue: than contains "a" (think "another" or "as" for comparison). then contains "e" (think "event" or "end result").
Sound test: read the clause aloud-does it suggest "after/next" or "compared with"?

Tip: If you can say "rather than" instead, choose than.

Similar mistakes to watch for

Other small-word errors often occur in comparison contexts. Check the preposition after "prefer" and the countability distinction between fewer and less.

Prefer takes to: "prefer X to Y" (not "prefer X than Y").
Fewer for countables, less for uncountables: fewer apples; less water.
Proofreading habit: check meaning, not just spelling-this catches your/you're, their/there/they're, etc.

Wrong: I prefer coffee then tea. →
Right: I prefer coffee to tea.
Wrong: He has less books then she does. →
Right: He has fewer books than she does.
Wrong: There going to the meeting then later. →
Right: They're going to the meeting, then later they'll submit the report.

FAQ

Can I ever use then in a comparison?

No. Then marks time or sequence. For comparisons use than; if unclear, rephrase with "compared to" or "rather than."

Is "prefer X than Y" correct?

No. Use "prefer X to Y" or "would rather X than Y." "Prefer X than Y" is nonstandard.

Why didn't spellcheck flag my mistake?

Both words are correctly spelled, so basic spellcheck won't detect contextual misuse. Use the swap tests or a context-aware checker to catch meaning errors.

What if the sentence could mean sequence or comparison?

Reword for clarity: use "after" or "next" for time, or "compared with/to" or "rather than" for comparisons. Clear wording removes ambiguity.

Quickest way to remember which to use?

Ask: Do I mean "after/next" (then) or "compared to" (than)? Try both substitutions-the one that preserves your intended meaning is the right choice.

Still unsure? Get fast feedback

If a sentence still feels ambiguous, paste it into a context-aware checker or ask a colleague for a quick read. A second pair of eyes saves time and prevents a small word from undermining your message.