Embed

Put any of our calculators on your site

All 67 calculators work as embeddable widgets. One line of HTML, no signup, no API key, and no tracking inside the frame — pick a tool below and copy the snippet.

Build your embed

Calculator

Theme

Pick the one that matches your page. “Match visitor” follows their system setting, which can leave a dark widget on a light page.

Starting height620pxAdd the auto-height scriptThe widget tells your page how tall it needs to be, so there is no scrollbar inside the frame. Optional — without it the frame stays at the height above.

Paste this

<iframe src="https://thecryptotools.com/embed/satoshi-converter/"
        title="Bitcoin to Satoshi Converter"
        style="width:100%;max-width:760px;height:620px;border:0;border-radius:14px"
        loading="lazy"></iframe>
<p style="font-size:12px;margin:6px 0 0">
  <a href="https://thecryptotools.com/tools/satoshi-converter/">Bitcoin to Satoshi Converter</a> by TheCryptoTools
</p>

…and this, once per page

<script>
window.addEventListener("message", function (e) {
  if (e.origin !== "https://thecryptotools.com") return;
  if (!e.data || e.data.type !== "tct-embed-height") return;
  document.querySelectorAll('iframe[src^="https://thecryptotools.com/embed/"]').forEach(function (f) {
    if (f.contentWindow === e.source) f.style.height = e.data.height + "px";
  });
});
</script>

Live preview

Bitcoin to Satoshi Converter by TheCryptoTools — this credit line is part of the snippet.

The terms, in plain words

It is free, and it stays free

There is no account, no key and no usage limit. The widget is a static page on our domain; embedding it costs us close to nothing, so there is nothing to meter.

We ask for a credit link, and here is why

The snippet includes a visible line crediting the calculator, outside the frame. That placement is deliberate and worth understanding: a link inside an iframe is a link from our page to our page, and does nothing for us. Only a link in your own HTML does. That credit is the entire price of the widget.

If your site’s policy is to mark third-party links as nofollow or sponsored, add it — we would rather have an honest link than a good one. Search engines discount widget links at scale anyway, and a page full of widget credits helps nobody.

Nothing is tracked inside the widget

The embedded page loads no analytics and no ad tag — which is unusual enough to state plainly. Every calculation runs in your visitor’s browser and nothing is sent anywhere, so embedding one does not make your site a party to anybody’s data collection and does not need a mention in your cookie banner.

It will keep working

The widget renders the same calculator as the page on our site — one implementation, so an embedded copy cannot quietly fall out of date while ours improves. If we ever had to retire a widget, the URL would redirect to the tool rather than break.

Sizing

The frame starts at whatever height you choose. The optional script lets the widget report its real height as the reader types, which removes the inner scrollbar. It checks the message origin before touching anything, so it only ever reacts to our frames.