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Cover Letter Format: Layout, Length & Structure (2026 Guide)
A correctly formatted cover letter is one page with 1-inch margins, an 11-12pt professional font, and tight line spacing (1.0-1.15), running three to four paragraphs and roughly 250-400 words. Structure it as a header, a greeting addressed to a named person, an opening hook, one or two body paragraphs proving your fit, and a short closing with a call to action.
A cover letter gets even less attention than a resume on first pass, so its format has to do two jobs at once: look clean enough that a hiring manager keeps reading, and stay simple enough that an applicant tracking system can parse it. Most rejected cover letters aren't rejected for bad writing. They are skimmed past because they are a wall of text, run onto a second page, or open with a tired "To Whom It May Concern."
This guide covers the mechanics that make a cover letter look professional and read fast: the right margins, font, and spacing; how long it should actually be; the four-block paragraph structure that works for almost every role; how to build the header; and the often-overlooked difference between an emailed cover letter and an attached one. You will get copy-ready snippets you can adapt and a dos and don'ts table you can check your draft against before you hit send.
Format is not decoration here. It is the frame that decides whether your strongest sentence gets read at all. Get the layout right once, save it as a template, and you can focus your energy on tailoring the words to each job.
Cover Letter Layout, Margins, Font & Spacing
The visual rules for a cover letter mirror a professional business letter, and they exist to keep the page scannable. Use 1-inch margins on all sides. You can tighten them to 0.75 inches if you are slightly over a page, but never go below that or the text starts to feel cramped. Set the body in a clean, ATS-safe font at 11 or 12 points, the same family you used on your resume so the two documents look like a matched set. Keep the line spacing tight, between 1.0 and 1.15, add one blank line between paragraphs instead of indenting them, and left-align everything. Avoid justified text, which creates awkward gaps between words. Aim for white space: a page that is roughly 50-60% text and 40-50% margin and gaps reads far easier than an edge-to-edge block.
Margins: 1 inch all around (0.75 inch minimum if you are tight on space).
Font: a clean, professional typeface like Calibri, Arial, Georgia, Helvetica, or Cambria at 11-12pt, matched to your resume.
Spacing: 1.0-1.15 line spacing, one blank line between paragraphs, no first-line indents.
Alignment: left-aligned throughout; avoid centered or justified text.
Length on the page: everything fits on one page with room to breathe, never spilling onto a second.
Color and graphics: skip logos, photos, columns, and text boxes. They break ATS parsing and add no value.
| Element | Recommended | Avoid |
|---|---|---|
| Margins | 1 inch (0.75" min) | Below 0.5", uneven margins |
| Font | Calibri, Arial, Georgia, Cambria 11-12pt | Decorative or script fonts, sizes under 10.5pt |
| Line spacing | 1.0-1.15 (single) | Double spacing, which pushes you to two pages |
| Paragraph breaks | Blank line between blocks | Tab indents or no separation |
| Alignment | Left-aligned | Justified or centered body text |
| File format | PDF (or .docx if requested) | Scanned image, graphic-heavy template |
How Long Should a Cover Letter Be?
A cover letter should be one page, three to four short paragraphs, and roughly 250-400 words. That length is long enough to make a focused case and short enough that a busy hiring manager reads the whole thing. Half a page can feel thin and unconvincing, while anything past one full page signals you have not edited and risks not being read at all. The word count is a guide, not a target to pad toward. If you can make your case in 280 tight words, do that rather than stretching to 400 with filler. Each paragraph should earn its place. Cut any sentence that restates your resume verbatim or could appear in a letter for any job.
Sweet spot: 250-400 words across 3-4 paragraphs, on a single page.
Opening: 2-4 sentences. Body: one or two paragraphs. Closing: 2-3 sentences.
Shorter is fine: a sharp 250-word letter beats a padded 400-word one.
Never exceed one page. A second page almost guarantees it goes unread.
For an emailed cover letter (in the body of the email), aim for the shorter end, around 150-250 words.
Cut anything generic enough to fit any role. That is the fastest way to trim to length.
The Cover Letter Header & Greeting
The header carries your contact details and, for a formal or attached letter, the date and the employer's information, laid out like a business letter. At minimum, put your name, phone number, email, and city/state (and a LinkedIn or portfolio URL if relevant) at the top, ideally styled to match your resume header so they read as one application. A traditional block format follows your details with the date, then the hiring manager's name, title, company, and address. For modern applications, especially when you are pasting into a portal or email, you can streamline this, but always keep your own contact line. The greeting matters more than people think: address a real person by name whenever you can find one. Use 'Dear [Hiring Manager's Name],' and fall back to 'Dear Hiring Manager,' or 'Dear [Team] Hiring Team,' only when the name truly is not findable. Avoid 'To Whom It May Concern' and 'Dear Sir or Madam,' which read as dated and impersonal.
Your block (always): full name, phone, professional email, city and state, optional LinkedIn/portfolio.
Date and employer block (formal/attached letters): date, then hiring manager's name, title, company, address.
Match the styling of your resume header so the documents look unified.
Best greeting: 'Dear [First Last],' or 'Dear Mr./Ms. [Last Name],' using a name you found in the posting, on LinkedIn, or on the company site.
Acceptable fallback: 'Dear Hiring Manager,' or 'Dear [Department] Hiring Team,'.
Avoid: 'To Whom It May Concern,' 'Dear Sir or Madam,' 'Hi,' or no greeting at all.
Use a colon or comma after the greeting and a blank line before the opening paragraph.
Header block (modern): Jordan Rivera Austin, TX | (555) 123-4567 | jordan.rivera@email.com | linkedin.com/in/jordanrivera
Header block (traditional/attached): Jordan Rivera Austin, TX 78701 (555) 123-4567 | jordan.rivera@email.com [Date] [Hiring Manager Name] [Title], [Company] [Company Address]
Greeting: "Dear Ms. [Last Name]," or, if no name is available, "Dear [Company] Hiring Team,"
Paragraph Structure: The 4-Block Format
Almost every effective cover letter follows the same four blocks: an opening that hooks and states the role, one or two body paragraphs that prove your fit with specifics, and a closing that asks for the next step. The opening should name the job and lead with a reason you are a strong match, not 'I am writing to apply for...'. The body is where you connect your resume to their needs rather than repeating it. Pick two or three of the job's key requirements and show, with a concrete example or metric, that you have delivered on them. If you use two body paragraphs, let the second one speak to why this company specifically, referencing something real about their product, mission, or team. The closing reiterates your interest in a sentence, thanks the reader, and includes a clear call to action about an interview or conversation. Keep each block tight. Momentum is what carries a hiring manager from your first line to your signature.
Opening (2-4 sentences): name the role, state how you found it if relevant, and lead with your strongest hook or a quantified win.
Body 1 (3-5 sentences): match two or three of the posting's top requirements to specific, ideally measurable, achievements.
Body 2 (optional, 2-4 sentences): show genuine knowledge of the company and why you want this role, not just any role.
Closing (2-3 sentences): restate interest, thank the reader, and ask for an interview or call.
Sign-off: 'Sincerely,' or 'Best regards,' followed by a blank line and your typed name.
One idea per paragraph; if a paragraph passes 5-6 lines, split or trim it.
Opening hook: "Your recent launch of [product/initiative] is exactly the kind of work I have spent the last [X years] doing, which is why the [Job Title] opening at [Company] caught my attention. In my current role at [Company], I [quantified achievement that maps to this job]."
Body proof: "The posting calls for someone who can [key requirement]. At [Company], I [specific action] that [measurable result, e.g., 'cut processing time 40%' or 'grew the channel to X']. I would bring that same [skill] to your team."
Why this company: "What draws me to [Company] specifically is [genuine, specific reason, e.g., your focus on X / your approach to Y]. It aligns closely with how I [relevant value or past experience]."
Closing with call to action: "I would welcome the chance to discuss how my experience in [area] can support [team/goal]. Thank you for your time and consideration. I look forward to speaking with you."
Emailed Cover Letter vs. Attached Cover Letter
How you deliver the cover letter changes its format. When you paste the letter into the body of an email, you drop the formal header blocks and the date, because the email's own header already shows who you are and when you sent it. Write a clear subject line, skip your address block, open with the greeting, and keep it shorter, around 150-250 words, since people read email more impatiently than an attached document. When you attach the cover letter as a separate file (or upload it to an application portal), use the full business-letter format with your contact block, the date, and ideally the employer's details, and save it as a PDF named clearly, like 'Jordan-Rivera-Cover-Letter.pdf'. Many portals ask for a single upload or paste your text into a box. In those cases, the attached or portal format applies but without an email subject line. When in doubt, follow the application's instructions exactly. If it says paste into a field, optimize for the email-style short version.
Emailed (in the body): add a specific subject line, drop the address/date blocks, start at the greeting, keep it 150-250 words.
Email subject line: 'Application for [Job Title] - [Your Name]' or '[Job Title] Application - [Your Name]'.
Attached file: use the full header (your block, date, employer block), 250-400 words, save as PDF.
File name: 'FirstName-LastName-Cover-Letter.pdf', no spaces or version numbers.
Portal upload: treat it like an attachment but follow the field's character limits.
Always read the application instructions. They override these defaults.
Email subject line: "Application for Marketing Coordinator - Jordan Rivera"
Emailed cover letter opening (no address block): Subject: Application for Marketing Coordinator - Jordan Rivera Dear Ms. [Last Name], I'm excited to apply for the Marketing Coordinator role at [Company]...
Attached file name: Jordan-Rivera-Cover-Letter.pdf
Cover Letter Format Dos and Don'ts
Before you send, run your draft against this checklist. Most formatting mistakes are quick fixes that meaningfully raise how professional the letter looks, and several of them are the difference between getting parsed correctly by an ATS and getting silently filtered out. Open the file you are about to submit, not the working copy on your screen, and read it top to bottom one last time: confirm it is a single page, that the greeting names a real person where possible, that every paragraph earns its place, and that your contact details and the company name are correct. The table below pairs the habits that help with the ones that quietly hurt, so you can scan your draft against both columns in under a minute.
Do save and submit a PDF unless the posting specifically asks for .docx, so your layout stays intact.
Do proofread the company name, the hiring manager's name, and the role title; a mismatch here sinks an otherwise strong letter.
Don't reuse a generic letter across applications; tailor the opening and at least one body sentence to each job.
Don't pad to hit a word count or let the letter spill onto a second page.
Do keep the design simple: no columns, text boxes, headers/footers, or images that confuse an ATS.
Don't repeat your resume line for line; the letter should add context, not duplicate the bullet points.
| Do | Don't |
|---|---|
| Keep it to one page, 250-400 words | Run onto a second page or pad with filler |
| Address a named person ('Dear Ms. Lee,') | Open with 'To Whom It May Concern,' |
| Use 1-inch margins and an 11-12pt resume-matched font | Shrink margins below 0.5" or use script/decorative fonts |
| Left-align text with blank lines between paragraphs | Justify or center the body, or indent every line |
| Tailor the hook and a body line to each role | Send the same generic letter to every employer |
| Lead with a concrete reason or quantified win | Open with 'I am writing to apply for the position of...' |
| Save as a cleanly named PDF (Name-Cover-Letter.pdf) | Submit a scanned image, screenshot, or graphic-heavy template |
| Match delivery to the channel (short for email, full block for attached) | Paste a full business-letter header into an email body |
| End with a clear call to action and typed name | Forget the sign-off or leave the contact line off |
| Proofread the company name, role, and your own email | Send with placeholder text or a wrong company name still in it |
Frequently asked questions
What is the correct format for a cover letter?
Use a one-page business-letter layout: 1-inch margins, an 11-12pt professional font matched to your resume, and 1.0-1.15 line spacing with a blank line between paragraphs. Structure it as a header with your contact details, a greeting to a named person, an opening hook, one or two body paragraphs that prove your fit with specifics, and a short closing with a call to action. Keep the whole letter to roughly 250-400 words and left-align everything.
How long should a cover letter be?
A cover letter should fit on one page, run three to four short paragraphs, and total roughly 250-400 words. Shorter is fine, as a sharp 250-word letter beats a padded 400-word one, but never spill onto a second page. If you are pasting the letter into the body of an email, aim for the shorter end, around 150-250 words.
What font and margins should a cover letter use?
Set 1-inch margins on all sides (0.75 inch is the minimum if you are slightly over a page) and use a clean, ATS-safe font like Calibri, Arial, Georgia, or Cambria at 11-12 points. Match the font to your resume so the two documents read as one application, and avoid decorative or script typefaces and anything under about 10.5pt.
Should I email my cover letter or attach it?
Follow the application's instructions first. If you are pasting into the body of an email, drop the formal header and date blocks, write a clear subject line like 'Application for [Job Title] - [Your Name]', start at the greeting, and keep it to about 150-250 words. If you are attaching a file or uploading to a portal, use the full business-letter format and save it as a cleanly named PDF, such as Jordan-Rivera-Cover-Letter.pdf.
How do I format the header of a cover letter?
At minimum, put your name, phone number, professional email, and city/state at the top, plus a LinkedIn or portfolio URL if relevant, styled to match your resume header. For a formal or attached letter, follow your contact block with the date and then the hiring manager's name, title, company, and address. When pasting into an email or portal you can streamline this, but always keep your own contact line.
What should I avoid in a cover letter format?
Avoid a second page, padding to hit a word count, and generic letters reused across jobs. Skip columns, text boxes, images, and graphic-heavy templates that break ATS parsing, and don't justify or center the body or indent every line. Steer clear of 'To Whom It May Concern' and 'Dear Sir or Madam,' and never send a letter with the wrong company name or placeholder text still in it.
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