Different from and different than both appear in established English usage. Different from is the choice most usage guides prefer in the United States, while different than is accepted in American usage and can be useful before a following clause.[1][1][2] Audience, sentence structure, and house style are safer guides than declaring one form universally correct.
What Do Different from and Different Than Mean?
Both phrases mark a contrast, but different from is the broad default and different than often introduces an extended comparison in American English. The adjective different means “not the same” and is usually followed by from; American English also commonly uses different than.[2]
| Context | Useful choice | Original example | Scope |
|---|---|---|---|
| Simple comparison between nouns | different from | This key is different from the spare key. | Widely preferred default |
| American English comparison | different than | This key is different than the one I used yesterday. | Common in American English[2] |
| Comparison followed by its own subject and verb | different than | The result was different than we expected. | Accepted when from would require a longer rewrite[1] |
| International audience | different from | Our process is different from theirs. | Favored for international clarity[3] |
Different from has the longest recorded history of the forms, but different than has also been used for hundreds of years.[1] A late nineteenth-century prescription insisted on from alone even while than continued to appear in established writing.[1] That history explains the disagreement without turning age into a correctness test.
For a short comparison, from is the least marked choice:
- “My route is different from yours.”
- “The revised chart is different from the original.”
- “Her answer was different from mine.”
American English also permits than in comparisons such as “This tea tastes different than the one I usually drink.”[2] Writers addressing readers across dialects can choose different from for broader clarity.[3]
Sentence structure can make than economical. In “The meeting ended differently than we expected,” the words after than include a subject, we, and a verb, expected. With different, the same extended pattern is natural in American usage: “The outcome was different than we expected.” A version with from normally needs a bridge: “The outcome was different from what we expected.” The claim supporting different than specifically notes its acceptance before clauses or when from would sound awkward.[1]
How Do Different from and Different Than Differ?
The main differences are preference, dialect, and sentence shape rather than basic meaning. Usage guides often prefer different from, especially in the United States, while American speakers also commonly use different than.[1][2]
Sources do not present one uncontested rule. One prescriptive source calls different from standard and rejects different than in simple comparisons.[4][4] The same discussion reports a more liberal view that accepts different than when a rewrite with from would be clumsy, especially before a clause.[4] Presenting both scopes lets an editor choose deliberately.
Compare these pairs:
- Simple nouns:
- “The final design is different from the sketch.”
- “The final design is different than the sketch.” The first matches the widely preferred form. The second occurs in American usage, but a strict house style may revise it.
- Extended comparison:
- “The final design is different than the committee expected.”
- “The final design is different from what the committee expected.” Both express the intended contrast. The from version needs what to introduce the expected result.
- Pronouns:
- “Their method is different from ours.”
- “Their method is different than ours.” For international or conservative editing, choose from. In American usage, readers may encounter both.
British usage adds another layer. Cambridge records different to, especially in speech, and also records different than before a clause in British English while noting that many speakers consider the latter incorrect.[2][2] This mixed evidence makes universal labels unhelpful. A British house style may prefer different from or different to; an American house style may allow different than. For an international readership, different from remains the documented clarity choice.[3]
Do not define a clause as merely “words after than.” The useful signal here is a following comparison with its own subject and verb, such as than the guide predicted. That shape explains why replacing than mechanically with from fails: “different from the guide predicted” needs a bridge such as what or the way.
Four transformations show why editing the whole construction is safer than swapping one word:
- “The room looked different than it did yesterday” becomes “The room looked different from the way it did yesterday.”
- “The total was different than the estimate predicted” becomes “The total was different from what the estimate predicted.”
- “This cover is different from the first cover” can remain a direct noun comparison without a bridge.
- “The ending was different from what I remembered” can be shortened in American prose to “The ending was different than I remembered” when the house style permits that form.
Each pair preserves the original contrast. The added what or the way is structural work, not decoration: it gives from an object while retaining the following subject-and-verb comparison.
When Should You Choose Between Different from and Different Than?
Choose different from as a broad default; consider different than for accepted American usage or before a clause, then apply the audience’s house style consistently. A form can be standard in one scope and revised in another.
Use this decision process:
- For a simple comparison or unknown audience, begin with different from.
- Before a following subject-and-verb comparison, different than can avoid an awkward construction.
- In American prose, check whether the house style accepts different than.
- For British readers, recognize different to and the disputed status of clause-taking different than.
- For international clarity, favor different from.
- When changing than to from, add what or the way if the sentence needs a grammatical bridge.
Complete each item using the stated context. Write from, than, or either, then compare the key.
- Use the broad international default: “The new policy is different ___ the old policy.”
- Use concise American English before a following subject and verb: “The trip was different ___ we had imagined.”
- Follow a strict house style that permits only different from: “Your copy is different ___ mine.”
- Use ordinary American English with no stricter house rule: “This version looks different ___ the one online.”
- Address an international audience: “Their timetable is different ___ ours.”
- Complete the grammatical from rewrite: “The result was different ___ what the analyst predicted.”
- Explain why “The result was different from the analyst predicted” needs revision.
- Rewrite “The launch was different than we expected” for a house style that requires different from.
Answer key
- from — The prompt requests the internationally clearer default.[3]
- than — A following subject and verb create the clause context in which different than is accepted.[1]
- from — The stated house style determines the choice.
- either — Both occur in American usage; from is the more widely preferred default, while than is common.[1][2]
- from — The prompt names an international readership.[3]
- from — What supplies the bridge needed by this rewrite.
- After from, add a bridge: “The result was different from what the analyst predicted.” Without what, the words the analyst predicted do not attach correctly to from.
- “The launch was different from what we expected.” The revision preserves the extended comparison while satisfying the stated style.
A final edit should preserve both grammar and scope. Changing the preposition may require changing the sentence around it, and a preference from one dialect or style guide should not be presented as a ban for every reader.