Text & Writing Utilities · Free tool
Envelope Formatter
Format envelopes correctly for US, UK, EU, CA, or AU standards online. Get print-ready #10 or DL layouts instantly — free tool, no sign-up.
Updated June 2026
Sender Name
100 Sender St
City, ST 00000
JOHN SMITH
221 BAKER ST APT 4B
NEW YORK NY 10001-1234
STAMP
United States (USPS) formatting tips
- USPS prefers ALL CAPS, no punctuation in the address block.
- Include the ZIP+4 (5+4 digits) when known.
- Use standard 2-letter state abbreviations.
- Apartment / unit number on its own line as 'APT 4B' or 'STE 200', not '#4B'.
- Place stamp top-right; sender top-left; recipient centered.
Print tip: set printer to envelope feed (most printers have a #10 envelope option). Use the landscape page size 9.5×4.125 inches (US #10) or 220×110 mm (DL international). Test on plain paper first.
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What it does
Format envelopes correctly for US (USPS), UK (Royal Mail), EU national posts, Canada Post, or Australia Post standards. Each country has different rules: USPS prefers ALL CAPS, Royal Mail wants postcode on its own line, EU varies by country. The tool gets the spacing right and prints to a #10 (US) or DL (international) envelope.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/envelope-formatter" width="100%" height="720" frameborder="0" loading="lazy" title="Envelope Formatter" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Pick country / postal authority.
- Fill in sender + recipient.
- Print on a real envelope (set printer to envelope feed).
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