For teachers, schools & PTAs
Embed free calculators on your class website
Free, accessible, ad-free embeds of our grade, GPA, test-score and classroom tools for teachers, schools and PTAs.
Teachers, schools and PTAs can put any of 22 free calculators and classroom tools on their own website with one line of code. The embeds are free, ad-free, cookie-free and built to WCAG 2.1 AA, so they suit pages used by children. Pick a tool from the list below, copy its code, and paste it into your page.
Who it’s for
Teachers who want a grade or test-score calculator on the class page, schools and districts building a student resources hub, PTAs and parent groups, libraries and tutoring programs. If students keep asking “what do I need on the final?” or “what’s my GPA?”, an embed puts the answer one click away on a site they already visit. Popular choices are the final grade calculator, the high school GPA calculator, the classroom timer and the snow day calculator.
How to embed a tool
- Pick a tool from the list below and open its page.
- Scroll to “Add this tool to your class website” near the bottom of the page (each card below links straight there).
- Copy the embed code with the button. It is a single
<iframe>plus a one-line credit link. - Paste it into your site wherever your platform accepts HTML or an embed block. Most website builders and learning platforms offer an “embed” or “HTML” block for this.
The embed resizes to the width of your page (up to 760px) and has a default height of 640px; change the height value if your tool needs more or less room. You can preview any embed at /embed/<tool>/ before adding it.
Accessibility
Our target for every embeddable tool is WCAG 2.1 Level AA.
- Keyboard: every input, button and option can be reached and operated with the keyboard alone.
- Screen readers: every input has a visible text label, and results are announced through a live region when they change.
- Touch and small screens: touch targets are at least 44px, and tools work on phones 360px wide.
- Motion: animations respect the “reduce motion” setting.
If you find a barrier in any embed, tell us (see contact below) and we will treat it as a bug.
Privacy: no ads, no tracking, no cookies
Embeds contain no ads, no analytics, no tracking scripts and no cookies, and load no third-party fonts or scripts. Every calculation runs inside the visitor’s browser, and nothing a student types is sent to us or anyone else. Your school should still follow its own policies for third-party content.
Usage terms
- Free for teachers, schools, districts, PTAs, libraries and non-profit education sites. No sign-up and no fee.
- Keep the credit link. The one-line “Free [tool] from The Homework Site” link under the iframe must stay visible and unmodified.
- Don’t frame it as your own or place it on pages that sell answers or impersonate a school.
- We may update a tool’s formulas or design at any time; the embed always shows the current version.
Contact
Questions, accessibility issues or a tool you’d like to see? See the contact section of our about page.