Embeddable Calculators

Yes. Every calculator on this page is free to embed with no sign-up, no API key, and no usage limit. The only requirement is keeping the automatic attribution link, which is built into the widget itself rather than something you add.

No. Click “Copy Embed Code”, then paste the two lines it gives you into your page's HTML — most website builders (WordPress, Wix, Squarespace, Webflow) have a dedicated “embed” or “custom HTML” block for exactly this.

Each calculator loads in its own isolated iframe and uses loading="lazy", so it won't load until a visitor scrolls near it, and it won't block the rest of your page from rendering.

Yes. Click “More Options” on any card to copy a Small, Medium, or Large embed instead of the default Responsive one. Height always adjusts automatically to fit the content, so there is never a scrollbar or cut-off content.

Yes — each embed is a self-contained iframe, so you can place multiple calculators on the same page without them interfering with each other.