How Long Should a Cover Letter Be? The Data-Backed Answer

The ideal cover letter is 250-400 words — roughly three-quarters of a single page. ResumeGo (2025) A/B tested 7,500 job applications across multiple industries and found that letters in the 250-400 word range produced the highest interview callback rate, outperforming both shorter (under 200 words) and longer (over 500 words) letters.

Letters under 200 words felt incomplete — they lacked enough evidence to be persuasive. Letters over 500 words saw a 32% drop in engagement because hiring managers stopped reading before the end. The sweet spot is enough to make a specific, evidence-backed case without padding.

For guidance on what to include within that word count, see our complete cover letter writing guide.

Multiple studies converge on the same answer: shorter is better, but not too short.

• ResumeGo (2025): 250-400 words produced the highest interview rates in a controlled A/B test of 7,500 applications. Letters over 500 words saw 32% fewer callbacks.
• Robert Half (2025): 72% of hiring managers say they will not read a cover letter that extends to a second page, and 68% prefer letters under 400 words.
• Ladders Inc. (2025): Eye-tracking research shows recruiters spend an average of 53 seconds reading a cover letter — approximately 250 words at average reading speed.
• Jobvite (2025): 58% of recruiters say overly long cover letters are a "moderate to major turnoff," while only 12% say the same about concise ones.

The data is clear: one page, four paragraphs, 250-400 words. That is the format that gets read.

I read hundreds of cover letters a month. The ones I finish are under half a page. The ones I skip are the ones that look like an essay when I open the PDF.

Four paragraphs, each with a specific job:

Paragraph 1: Hook (2-3 sentences, ~50-60 words)
Open with the company's specific challenge or a relevant achievement. Name the role. Show you researched the company. Do not waste words on "I am writing to apply" — that is obvious from the fact that you are applying.

Paragraph 2: Evidence #1 (3-4 sentences, ~80-100 words)
Your most relevant achievement with a metric. Connect it directly to a requirement in the job posting. This is where keyword alignment matters most.

Paragraph 3: Evidence #2 (3-4 sentences, ~80-100 words)
A second relevant accomplishment or skill demonstration. Ideally from a different dimension — if paragraph 2 was technical, make this one about leadership, cross-functional work, or domain expertise.

Paragraph 4: Close (2-3 sentences, ~40-50 words)
Express genuine interest in the specific role (not just "this opportunity"). End with a forward-looking statement, not "Thank you for your consideration."

Total: ~280-310 words. Room for a personal detail or transition explanation if needed. See our cover letter examples for this structure in action.

Almost always yes — but with an important caveat. A short, generic letter is worse than a longer, specific one. The goal is density, not brevity for its own sake.

Robert Half (2025) data shows that hiring managers rank "relevance and specificity" as 3x more important than length. A 350-word letter with two quantified achievements and a company-specific reference will always outperform a 200-word letter that could have been sent to any company.

When shorter is better (under 300 words):

• Entry-level roles where you have limited experience
• Creative industries where brevity signals good editing
• Follow-up letters after a referral (the connection speaks for you)

When longer is acceptable (350-400 words):

• Career changes (you need to explain the transition)
• Senior roles (leadership philosophy, strategic vision)
• Roles where the posting asks specific questions you need to address

If your cover letter is over 400 words, something needs to be cut. If it is under 200, something needs to be added. Between those numbers, focus on quality

Ladders Inc. (2025) eye-tracking data shows that recruiters spend the most time on the first two sentences and the last sentence — the middle gets scanned, not read word-by-word. Allocate your word budget accordingly:

• Opening line: 15-25 words. This is your hook — make it specific and attention-getting. Ladders found recruiters decide whether to read the full letter within the first 8 seconds.
• First body paragraph: 80-100 words. Your strongest evidence, frontloaded. If they read nothing else, this paragraph should make the case.
• Second body paragraph: 70-90 words. Supporting evidence from a different angle.
• Closing: 30-50 words. Confident, forward-looking, specific to the role.

Word count by purpose:

• Company/role references: 15-20% of total words
• Achievement evidence: 50-60% of total words
• Transition/personal context: 10-15% of total words
• Opening and closing: 15-20% of total words

This distribution ensures the letter is evidence-heavy and company-specific — the two factors that Robert Half (2025) identifies as the strongest predictors of cover letter success.

Most cover letters go over 400 words for the same five reasons. Cutting these adds clarity without losing substance:

1. Restating the resume — If a bullet point is on your resume, do not repeat it verbatim. Expand on 1-2 achievements instead. See cover letter vs resume for what goes where.
2. Over-explaining motivation — "I am passionate about innovative solutions that leverage cutting-edge technology to drive transformative outcomes" says nothing. One sentence about why this company specifically is enough.
3. Listing skills — "I am proficient in Excel, PowerPoint, Salesforce, Slack, and Asana" belongs on your resume. In the cover letter, show one of these in action.
4. Hedge language — "I believe I could potentially be a strong candidate" — cut every qualifier. State what you did and what you will do.
5. Formulaic openings/closings — "I am writing to express my interest" (7 words that say nothing) and "Thank you for your time and consideration" (7 more words that say nothing). That is 14 wasted words — 5% of a 300-word letter.

Jobvite (2025) reports that applications with concise, specific language receive 27% more positive recruiter responses than verbose ones, even when the content quality is similar.

ATS systems do not penalize length directly — they extract and match keywords regardless of document length. However, length indirectly affects your ATS score in two ways:

Keyword density: A 300-word letter with 8 matched keywords has higher keyword density than a 600-word letter with the same 8 keywords. Some ATS algorithms factor in density alongside raw count. NACE (2025) data confirms that keyword density correlates with higher ATS rankings.

Keyword variety: Longer letters tend to include more varied vocabulary, which can help match more keyword variations. But the research from ResumeGo (2025) shows the optimal balance is in the 250-400 word range — enough keywords without diluting density.

Practical advice: Use an ATS checker tool to score your letter against the job posting. Aim for a 60-70% keyword match score. If you are below that, add relevant keywords from the posting. If you are above it, your letter might be keyword-stuffed — review for natural language flow.

For detailed ATS optimization strategies, see our ATS-friendly cover letter guide.

The best-performing cover letters I see are between 275 and 350 words. They hit the major keywords, tell one strong story, and leave the reader wanting to see the resume. Anything over 400 words and you are writing an essay, not a cover letter.