'No Different Than' vs 'No Different From'- Grammar Rules
The Short Answer
"No different from" is the traditional standard in formal writing. "No different than" is widely accepted in everyday speech and informal contexts. Both are grammatically defensible, but one is safer if you're writing for school, publication, or professional documents.
That's it. That's the whole debate in one paragraph. But if you want to understand why these variations exist and when to use which, keep reading.
Where the Confusion Comes From
The confusion isn't really about grammar. It's about how English handles comparisons.
When you compare two things, you can use from (implying origin or separation) or than (implying degree or extent). Both prepositions do heavy lifting in English, and they overlap more than grammar textbooks admit.
"Different from" has been the established form since the 1700s. "Different than" crept in later and triggered centuries of prescriptivist hand-wringing. The logic against "than" was simple: you compare things (apples from oranges), not degrees (more than, less than). Since "different" describes a state rather than a measurement, "from" made more sense.
Modern usage has largely rejected that distinction.
What Style Guides Actually Say
Most major style guides have softened their stance over the years.
- AP Stylebook — Prefers "different from" but accepts "different than" when it avoids awkward phrasing
- Chicago Manual of Style — Accepts both, notes that "different than" is increasingly common and not incorrect
- Oxford English Dictionary — Lists both as standard
- Garner's Modern English Usage — Notes that "different than" has become dominant in American English and advises writers to use whichever sounds more natural
The bottom line: no style guide marks "different than" as an error. It's a usage preference, not a grammatical rule.
When It Actually Matters
There is one legitimate case where "different from" is objectively better: when you're comparing two nouns directly.
Example:
"Life in Tokyo is no different from life in Osaka."
"Life in Tokyo is no different than life in Osaka."
Both work here. But when you introduce a clause, "than" often sounds more natural:
"The new model is no different than I expected."
"The new model is no different from what I expected."
The second version requires restructuring. "Than" handles clauses more gracefully in these cases.
British vs American English
British English leans harder toward "different from." American English uses "different than" freely. This isn't a rule—it's a pattern. Neither is wrong on either side of the Atlantic.
If you're writing for a British audience and want to sound natural, "different from" is the safer bet. For American audiences, either works.
Comparing the Two Forms
| "No different from" | "No different than" | |
|---|---|---|
| Formality | More formal, traditional | Casual, conversational |
| Accepted by style guides | Yes (universal) | Yes (with some preference noted) |
| Best for comparing nouns | Preferred | Acceptable |
| Best for comparing clauses | Requires restructuring | More natural |
| British usage | Standard | Less common |
| American usage | Standard | Very common |
How to Use This Right Now
Here's what you actually need to do:
- In formal writing (academic papers, professional reports, submissions): use "no different from." It's never wrong and never draws criticism.
- In casual writing or speech: use whichever sounds natural. Nobody will notice or care.
- When comparing clauses: "than" often saves you from awkward rewrites. "No different than I expected" beats "no different from what I expected" in flow.
- When comparing nouns: "from" is cleaner. "My coffee is no different from yours."
If you're ever unsure, default to "from." It's the conservative choice that won't raise eyebrows.
The Real Rule
There is no strict rule. Both forms are grammatically acceptable. The only "rule" that matters is consistency within your own document and appropriateness for your audience.
Worrying about this distinction is the kind of thing that wastes more time than the actual error would cost. Use "different from" for formal contexts. Use either in informal ones. Move on.