What is the simplest way to remember then vs than?
The easiest memory trick is to focus on the vowels. Than has an A, and A stands for comparison (think 'A is better thAn B'). Then has an E, and E stands for time or sequence (think 'first this, thEn that'). If you are comparing two things, use than.
Mixing up then and than is one of the most frequent writing errors in the English language, appearing in everything from student essays to corporate memos and published news articles. A 2022 analysis of common grammar mistakes by Grammarly found that then/than confusion ranks among the top ten most flagged errors across millions of documents [1]. The reason is simple: these two words look almost identical, differ by only a single vowel, and in many dialects of spoken English they sound exactly the same.
But the difference between them is clear-cut, and once you learn it, you will never confuse them again. Than is for comparisons. Then is for time, sequence, and logical consequence. That single distinction covers every usage you will ever encounter. This guide breaks it down with dozens of examples, memory tricks, tables, edge cases, and professional-context advice so you can write with confidence.
The Core Rule
Here is the rule in its simplest form:
- Than is a conjunction (or preposition) used when comparing two things.
- Then is an adverb used to indicate time, sequence, or consequence.
"The distinction between then and than is one of the clearest binary rules in English grammar. Than compares; then sequences. There is no overlap." -- Bryan A. Garner, Garner's Modern English Usage, 4th edition [2]
The Vowel Memory Trick
Look at the vowel in each word:
- thAn -- A for compArison
- thEn -- E for timE / sEquence
This mnemonic takes one second to apply and works every time.
Than - The Comparison Word
Than is used whenever you compare two or more things, people, amounts, qualities, or degrees. It connects the items being compared.
Examples of Than in Sentences
- The new software is faster than the old version.
- She has more experience than any other candidate.
- Our Q3 revenue was higher than projected.
- This approach is less risky than the alternative.
- He would rather work remotely than commute two hours.
- The project took longer than we anticipated.
- Nothing matters more than the safety of our team.
- The final report was better than the draft suggested.
- Completing the task sooner rather than later will save resources.
- The results were no different than what we expected.
Common Phrases with Than
| Phrase | Example |
|---|---|
| more than | The company has more than 500 employees. |
| less than | The repair cost less than $200. |
| better than | This quarter performed better than last quarter. |
| worse than | The delay was worse than we feared. |
| rather than | We chose quality rather than speed. |
| other than | No one other than the director has access. |
| greater than | Demand was greater than supply. |
| fewer than | Fewer than ten people attended. |
| no sooner than | No sooner than we arrived, the meeting began. |
| none other than | The keynote speaker was none other than the CEO. |
Than as a Preposition
In formal grammar, than traditionally functions as a conjunction, but modern usage guides also accept it as a preposition. The difference matters when choosing pronoun case:
- Conjunction (formal): She is taller than I [am]. (Compare: "She is taller than I am.")
- Preposition (informal but accepted): She is taller than me.
"Both constructions are defensible. In formal writing, treat than as a conjunction and use the nominative case. In everyday prose, the objective case after than is standard and unremarkable." -- The Chicago Manual of Style, 17th edition [3]
Then - The Time and Sequence Word
Then functions as an adverb and has several related meanings, all connected to time, order, or logical consequence.
Meanings of Then
| Meaning | Definition | Example |
|---|---|---|
| At that time | Referring to a specific point in time | We lived in Boston then. |
| Next in sequence | What comes after in a series of events | First save the file, then close the application. |
| In that case | Logical consequence or conditional result | If the budget is approved, then we can hire. |
| Additionally | Also, on top of that | There is the cost of materials, and then the labor. |
| At another time | Referring to a different period | Back then, the process was entirely manual. |
Examples of Then in Sentences
- We will review the data and then make a decision.
- If the client agrees, then we proceed to phase two.
- She was a junior analyst back then.
- First, outline the problem. Then, propose solutions.
- The manager approved the request and then notified the team.
- If you finish early, then you can leave early.
- By then, the deadline had already passed.
- We ate lunch and then returned to the conference room.
- The system will restart; then the update will apply.
- Since then, our workflow has improved dramatically.
Side-by-Side Comparison
This table puts then and than next to each other in similar contexts so you can see exactly how they differ:
| Sentence with Than (Comparison) | Sentence with Then (Time/Sequence) |
|---|---|
| This method is faster than the old one. | We updated the method; the process was faster then. |
| She earned more than her predecessor. | She earned a promotion; then she moved to management. |
| The task is harder than it looks. | Complete the easy tasks first, then tackle the hard ones. |
| We need a better plan than this. | We scrapped the plan and then started over. |
| Revenue was higher than expected. | Revenue rose in Q2; then it plateaued in Q3. |
| He is more qualified than the other applicant. | He submitted his resume, then completed the assessment. |
Common Mistakes and How to Fix Them
Mistake 1: "More then" Instead of "More than"
Wrong: The report contains more then 50 pages. Right: The report contains more than 50 pages.
Since you are comparing a quantity (50 pages) to the actual count, you need the comparison word than.
Mistake 2: "Rather then" Instead of "Rather than"
Wrong: We should focus on quality rather then quantity. Right: We should focus on quality rather than quantity.
Rather than is a fixed comparative phrase. It always uses than.
Mistake 3: "Than" Used for Sequence
Wrong: First review the contract, than sign it. Right: First review the contract, then sign it.
You are describing a sequence of steps, not making a comparison, so then is correct.
Mistake 4: "If...than" Instead of "If...then"
Wrong: If the test passes, than we deploy. Right: If the test passes, then we deploy.
Conditional statements use then to introduce the consequence. This is the if/then structure, never if/than.
Then vs Than in Professional Writing
In the workplace, confusing then and than can undermine your credibility, particularly in documents that reflect your analytical ability. A misused than in a financial report or a misplaced then in a project proposal signals carelessness to readers who know the difference.
Industry-Specific Examples
Finance and accounting:
- Our margins were higher than the industry average.
- We will finalize the audit and then submit to the board.
Project management:
- The revised timeline is shorter than the original.
- Complete the requirements gathering, then begin the design phase.
Human resources:
- This candidate has more certifications than any previous applicant.
- Conduct the interview, then send the evaluation form.
Legal writing:
- The settlement was less than the plaintiff demanded.
- The court will review the brief and then schedule oral arguments.
Healthcare:
- Patient outcomes were better than the control group.
- Administer the medication, then monitor vital signs for one hour.
"Precision in word choice is not pedantry -- it is professionalism. In fields where documents carry legal or financial weight, a single wrong word can change the meaning of a clause." -- William Strunk Jr. and E.B. White, The Elements of Style, 4th edition [4]
Edge Cases and Advanced Usage
"Then" as an Adjective
In rare cases, then functions as an adjective meaning "existing at that time":
- The then president signed the executive order.
- Our then headquarters was located in Chicago.
This usage is most common in historical, legal, and journalistic writing. Note that than is never used as an adjective.
"No Sooner...Than"
The phrase "no sooner...than" is a comparative construction, so it uses than:
- No sooner than we sat down, the fire alarm went off.
Do not write "no sooner then" -- it is always than because the structure implies a comparison of timing.
"Other Than"
Other than is always spelled with than because it implies a comparison or exclusion:
- Other than the formatting issues, the document is ready.
Informal Contractions
In very casual writing, some people write then to mean "in that case" in a way that could almost sound comparative:
- "You don't want pizza? Then what do you want?"
This is still then (consequence/logical follow-up), not than.
Practice Sentences
Test yourself with these sentences. Decide whether each blank should be then or than, and then check the answers below.
- The new design performs better _____ the prototype.
- We will test the feature and _____ release it.
- If costs are higher _____ budgeted, we need approval.
- Complete the survey, _____ submit it by Friday.
- She has more patience _____ anyone I know.
- Back _____, we did not have project management software.
- Nothing is worse _____ a missed deadline.
- Review the code, _____ push it to staging.
- Our team is larger _____ it was last year.
- We brainstormed ideas and _____ ranked them by feasibility.
Answers
| Sentence | Answer | Reason |
|---|---|---|
| 1 | than | Comparison (better than) |
| 2 | then | Sequence (test, then release) |
| 3 | than | Comparison (higher than) |
| 4 | then | Sequence (complete, then submit) |
| 5 | than | Comparison (more than) |
| 6 | then | Time reference (at that time) |
| 7 | than | Comparison (worse than) |
| 8 | then | Sequence (review, then push) |
| 9 | than | Comparison (larger than) |
| 10 | then | Sequence (brainstormed, then ranked) |
Then vs Than in Formal vs Informal Writing
The then/than distinction is absolute in all registers of English -- there is no context where they become interchangeable. However, the frequency of each word shifts depending on the type of writing.
| Writing Context | More Common Word | Why |
|---|---|---|
| Academic papers | Than (comparisons dominate analytical writing) | Research papers constantly compare results, methods, and populations |
| Technical documentation | Then (sequential instructions dominate) | "Install the software, then configure the settings" |
| Business reports | Both equally | Reports compare performance (than) and describe processes (then) |
| Legal writing | Than (conditions and comparisons) | "Greater than," "less than," "other than" appear frequently |
| Creative writing | Then (narrative sequence) | Stories move through time: "She opened the door, then stepped inside" |
| Email communication | Both equally | Emails contain both comparisons and action sequences |
Proofreading Strategy for Then/Than
Because the error is so common and spell-checkers do not catch it (both words are valid), a targeted proofreading strategy is essential:
- Use your word processor's Find function to search for every instance of "then" and "than" in your document.
- For each "than," verify that a comparison is being made. Can you identify what two things are being compared?
- For each "then," verify that the sentence describes time, sequence, or consequence. Can you replace it with "next" or "at that point"?
- Pay special attention to the phrases "more then," "rather then," "less then," and "other then" -- all of which are always wrong. These fixed phrases always use "than."
"The then/than error is invisible to spell-checkers because both words exist independently. This makes it a proofreading problem, not a drafting problem. Build a habit of checking every instance during your final review pass." -- Benjamin Dreyer, Dreyer's English: An Utterly Correct Guide to Clarity and Style [6]
Quick-Reference Decision Chart
When you encounter a sentence and are unsure whether to use then or than, ask yourself these two questions:
Question 1: Am I comparing two things (amounts, qualities, people, options)?
- Yes -- Use than.
- No -- Go to Question 2.
Question 2: Am I describing a point in time, a sequence of events, or a logical consequence?
- Yes -- Use then.
This two-question test handles every standard usage case.
"When in doubt about then versus than, ask one question: Is this a comparison? If yes, write than. For everything else, write then. The rule is absolute." -- AP Stylebook, 56th edition [5]
Related Grammar Guides
If you found this guide helpful, you may also want to review these commonly confused word pairs:
- Affect vs Effect - The Simple Rule That Always Works -- another frequently confused pair with a clean rule
- Their vs There vs They're -- mastering the three homophones
- Who vs Whom -- the objective vs subjective case
- Fewer vs Less - When to Use Each -- another comparison-word confusion
- Its vs It's - The Apostrophe Rule -- possessive vs contraction
Summary
The then vs than distinction comes down to one clear rule: than compares, then sequences. If you are saying that one thing exceeds, surpasses, or differs from another, use than. If you are describing what happens next, what happened at a particular time, or what follows logically from a condition, use then. There are no exceptions to this rule in standard English.
Bookmark this page, practice with the sentences above, and in a few days this distinction will become second nature. Clear, precise writing is built on getting the small things right -- and getting then vs than right is one of the easiest wins you can claim.
References
[1] Grammarly. "The Most Common Grammar Mistakes in English Writing." Grammarly Blog, 2022.
[2] Garner, Bryan A. Garner's Modern English Usage. 4th ed., Oxford University Press, 2016.
[3] The Chicago Manual of Style. 17th ed., University of Chicago Press, 2017.
[4] Strunk, William Jr., and E.B. White. The Elements of Style. 4th ed., Longman, 2000.
[5] The Associated Press Stylebook. 56th ed., Associated Press, 2022.
[6] Dreyer, Benjamin. Dreyer's English: An Utterly Correct Guide to Clarity and Style. Random House, 2019.
Frequently Asked Questions
What is the simplest way to remember then vs than?
The easiest memory trick is to focus on the vowels. Than has an A, and A stands for comparison (think 'A is better thAn B'). Then has an E, and E stands for time or sequence (think 'first this, thEn that'). If you are comparing two things, use than. If you are describing a sequence of events or a point in time, use then. This one-second vowel check works in virtually every situation.
Is 'more then' or 'more than' correct?
The correct phrase is always 'more than' because you are making a comparison -- stating that one quantity exceeds another. For example, 'The project cost more than we budgeted' and 'She has more than ten years of experience.' The word than is required whenever you compare amounts, qualities, or degrees. Writing 'more then' is one of the most common errors in professional documents and will be flagged by most grammar checkers and editors.
Can then and than ever be used interchangeably?
No, then and than are never interchangeable because they serve completely different grammatical functions. Than is a conjunction or preposition used exclusively for comparisons, while then is an adverb used for time, sequence, or logical consequence. Swapping one for the other changes the meaning of a sentence or makes it grammatically incorrect. In some regional dialects, the words may sound similar in casual speech, which is why the confusion persists, but in written English the distinction is absolute.