Grammar Mistakes Writers Make: Then vs. Than—The Tiny Difference That Trips Up Everyone

then vs than

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Few word pairs cause as many quick typos—or slow cringes—as then and than. They’re short, common, and easy to mix up, especially when writing fast. But in writing, especially fiction or essays, that one-letter difference can shift the whole meaning of your sentence.

The Quick Answer

Then relates to time or sequence.
Than is used for comparisons.

Examples in Action

Then (time or consequence):
- “We went to dinner, then saw a movie.”
- “If you’re done, then we can leave.”
  (It’s all about what happens next or as a result.)
Than (comparison):
- “She runs faster than her brother.”
- “This draft is stronger than the first one.”
  (It’s all about comparing two things.)

How to Remember the Difference

Here’s an easy trick:

Then = Time (both have an “E”).
Than = Comparison (think “A” for “against”).

Or picture this:
If you can swap the word for “next” or “after that,” it’s then.
If you can swap it for “in comparison to,” it’s than.

Why It Matters for Writers

A misplaced then can subtly change the meaning of a sentence or make dialogue sound unnatural. Readers might not always notice consciously, but editors—and sharp readers—absolutely will. Using them correctly keeps your writing clean and your rhythm clear.