Terms of Service
Last updated: July 26, 2026
Welcome
These terms cover your use of PostKid (“we,” “our,” or “us”) at postkid.com, including our letter-writing calculators, guides, museum, and everything else on the site. By using PostKid you agree to these terms and to our Privacy Policy. If you don’t agree, please don’t use the site. We may update these terms, and continued use means you accept the current version.
What PostKid Is (and Isn’t)
PostKid is a free, ad-supported site that helps children, families, and classrooms learn to write and send real mail. The Postage Calculator, Mail Delivery Time Estimator, Envelope & Paper Size Matcher, Pen-Pal Time-Zone Helper, Letter Word Count & Reading Time tool, and Stamp Quantity Calculator give curated, educational estimates — not official postal quotes or guarantees. For anything that must be exact, confirm the live price and rules at the post office or your carrier, as our Disclaimerexplains. PostKid is independent and not affiliated with any postal service or stationery brand.
Using the Site Fairly
By using PostKid, you agree to:
- Use the tools in good faith for personal, family, or classroom learning
- Not try to disrupt, overload, or break the site’s functionality
- Not use automated systems to hammer the tools or scrape the site
- Respect our and others’ intellectual property
- Not use the site for any unlawful purpose
Because PostKid is designed for children, we ask that a parent, guardian, or teacher supervise its use and apply their own judgement about what is suitable and safe for a particular child.
A Grown-Up’s Judgement Comes First
The tools assist and inform; they do not replace a responsible adult’s judgement. You’re responsible for double-checking anything that matters — the exact postage on an important package, or a specific mailing rule — with the post office or carrier before you rely on it.
Intellectual Property
The text, graphics, and tools on this site are PostKid’s property or used with permission, except museum and learn content sourced from Wikipedia and Wikimedia Commons under their public-domain and Creative Commons licenses. You may use the tools for personal, non-commercial purposes; please don’t copy, resell, or reverse-engineer the site.
Privacy
Your use of the site is also governed by our Privacy Policy. All tool calculations happen in your browser and are not transmitted to us.
Limitation of Liability
To the maximum extent permitted by law, PostKid is not liable for any damages — such as extra postage paid, a returned or delayed letter, or lost data — arising from use of, or inability to use, the site and its tools.
Third-Party Links and Ads
The site may link to third-party websites and displays advertisements from networks including Google AdSense. We don’t control or endorse third-party content, and use of any linked site is at your own risk.
Governing Law
These terms are governed by the laws of the United States, and you agree to the exclusive jurisdiction of its courts.
Contact
Questions about these Terms?
- Email: support@postkid.com
- Via our contact page