Put our calculators on your site, free
Every calculator here can be embedded on your own website with one line of HTML. No signup, no API key, no cost, and no tracking of your visitors. Take the code, paste it, done.
How it works
Copy the snippet for the calculator you want and paste it into your page, post or template wherever HTML is allowed. It works in WordPress (Custom HTML block), Ghost, Webflow, Squarespace, Wix, Notion embeds, and any hand-written site. The calculator loads inside a responsive frame, adapts to the width you give it, and runs entirely in your visitor's browser.
What your visitors get, and what we collect
Nothing is collected. The maths runs client-side in the iframe, so the numbers your readers type never reach our servers or anyone else's. There are no cookies set by the embed, no analytics beacons and no third-party trackers inside it. That means you can drop it into a page without changing your own privacy policy or consent banner.
The calculators
Sizing and tips
- Width: leave it at
100%so it fits whatever column you drop it into. - Height: the suggested heights above suit most layouts. On narrow mobile columns the calculator stacks vertically, so add roughly 200px if you see the frame scrolling.
- Dark mode: the embed follows its own light theme by default so it stays readable on any background.
- Performance:
loading="lazy"is already in the snippet, so the frame only loads when a reader scrolls to it.
Terms, in plain English
- Free for personal and commercial sites alike, including sites that run ads.
- Keep the "Powered by" credit link visible and followable.
- Do not alter the calculator's output or present it as your own tool.
- We may update the calculators over time, so embedded copies improve automatically.
- The calculators are educational and are not financial advice, which the embed states.
Questions, or want a calculator we do not have yet? Tell us and we will look at building it.