Embed
a calculator

Pick a calculator, copy one line

Choose any tool, set a size, and copy the snippet. It is a plain iframe: no script runs on your page, nothing is tracked, and the widget carries a small "Powered by calculate.to" link back to the full tool — that link is the whole price.

It carries state, too

Every calculator on the site keeps its inputs in the URL, and embeds inherit that. Add your own defaults to the src as query parameters alongside embed=1 — for example a loan embed pre-filled with your article's numbers — and the widget opens already showing them. Readers who click through land on the full page with the same numbers loaded.

House rules

Free for any site, commercial or not. Keep the attribution link visible and unmodified — it is how the tools stay free — and please do not wrap the iframe in anything that intercepts its clicks. The widget never sets cookies, never phones home, and works offline once your reader's browser has it cached.