The blunt answer: 250 to 400 words, three or four short paragraphs, one page maximum. If you remember nothing else, that's the number to aim for. Every exception below is either a narrow edge case or not really an exception at all.
Why 250-400 words
Recruiters and hiring managers spend about six to twelve seconds on a cover letter in the first pass. They're not reading prose — they're scanning for: is this person applying to this specific role, do they have proof of the top 2-3 things the posting asks for, and is this person annoying to read.
That can be done in three tight paragraphs:
- Paragraph 1 (60-100 words): why this role, why this company, one line previewing your strongest credential.
- Paragraph 2 (100-150 words): two or three concrete achievements from your resume that map to the job's hardest requirements.
- Paragraph 3 (60-100 words): why them specifically, closing with a specific next step (call, walk-through, take-home).
Under 250 words and you didn't show up with evidence. Over 400 and the reader stops reading somewhere around paragraph 3 — which is the paragraph you needed them to read.
One page, one column, one font
Every cover letter should fit on one page when printed at a normal 11pt font with 1-inch margins. Two pages signals you don't edit ruthlessly. Three pages signals you think this is a personal memoir.
If your cover letter looks like it needs a second page, the fix is almost always to cut sentences, not reduce the font size. Font-shrinking is the oldest tell-tale sign of someone who didn't want to edit.
The five exceptions
A short list of cases where the 250-400 word rule bends, all of them less common than you'd think:
1. Academic positions
Academic cover letters (for postdoc and tenure-track roles) run longer — often 1.5 to 2 pages. They describe your research program, teaching philosophy, and fit with the department in more depth than industry letters. This is a genuinely different document; the rules above don't apply.
2. Government or regulated-industry roles
Federal and state hiring processes sometimes require cover letters that address specific evaluation criteria line-by-line. Those can run 1-2 pages because the structure isn't persuasive prose — it's a checklist. Follow the posting's instructions literally.
3. Senior executive positions
For roles with broad scope (VP, Chief of Staff, General Manager, CxO), a tight second page can justify itself — usually because you're connecting experience across three or four distinct functions. Even then, one page is stronger if you can manage it.
4. Career-change applications
When your resume and the target role look completely unrelated, the cover letter is doing more work than usual — it's explaining the pivot. You're allowed 400-500 words here. Not 600.
5. When the posting explicitly says "brief"
Some companies (usually startups and boutique firms) specifically ask for a short cover letter — 100-200 words. Take them at their word. A paragraph that opens with something specific and ends with a concrete ask is enough.
Common length mistakes
The reasons most cover letters run too long — and what to cut instead:
- Restating the resume in prose. The reader already has your resume. Don't list every past role. Pick the two or three most relevant and develop them.
- Quoting the job description back at them. "I'm excited about the opportunity to join a fast-paced, mission-driven team that values…" is filler. They wrote it. They know what it says.
- Long generic openers. Anything that starts "I am writing to express my strong interest in the [role] position at [company]" can be deleted. A concrete reason-for-applying sentence is always stronger.
- Full company history paragraphs. One specific thing you noticed about the company (a product decision, a blog post, a talk someone gave) is worth more than three paragraphs of generic praise.
What length looks like in practice
Our 20+ role-specific cover letter examples all clock in at roughly 300-400 words. That's not a coincidence — it's what reads well on screen and prints on one page cleanly. If you want to see the sweet spot in action, pick the example closest to your target role.
Or, if you want the length handled for you automatically, our AI cover letter generator always produces 3-4 paragraphs — it's a hard rule in the prompt, so every letter comes out within the healthy range.
The three-check length review
Before you submit, do this in 30 seconds:
- Word count: anywhere from 250 to 400. If it's outside, cut or add.
- Paragraph count: 3 or 4. Not 2. Not 5.
- Print preview at 11pt with 1-inch margins. It fits on one page? Ship it.
Length is the easiest thing in a cover letter to get right and the most common thing applicants get wrong. Hit the number, move on, spend the remaining 20 minutes making sure paragraph 1 opens with something concrete.