Free crypto converter widget & price API

Add a live cryptocurrency converter to your site in one copy-paste, or pull prices as JSON. Free, no sign-up, no API key. Please keep the attribution link.

Converter widget

Coin Currency Theme

Preview

Embed code

<iframe src="https://coinmc.org/embed/convert/btc/usd/" width="100%" height="230" style="border:0;max-width:440px" loading="lazy" title="BTC to USD converter"></iframe>
<p style="font-size:12px"><a href="https://coinmc.org/convert/btc/usd/">BTC to USD rate</a> by CoinMC</p>

The link under the widget is part of the terms of use: it lets your visitors see the full rate table and history.

Price ticker & top-10 table

Two more widgets. Change ids (coin slugs), n (3–20 coins), vs (any currency code) and theme=dark in the URL.

Ticker

<iframe src="https://coinmc.org/embed/ticker/?ids=bitcoin,ethereum,solana,ripple&vs=usd" width="100%" height="90" style="border:0" loading="lazy" title="Crypto price ticker"></iframe>
<p style="font-size:12px">Prices by <a href="https://coinmc.org/">CoinMC</a></p>

Top 10 table

<iframe src="https://coinmc.org/embed/top/?n=10&vs=usd" width="100%" height="420" style="border:0;max-width:440px" loading="lazy" title="Top 10 cryptocurrencies"></iframe>
<p style="font-size:12px">Prices by <a href="https://coinmc.org/">CoinMC</a></p>

Price API

Simple JSON over HTTPS with CORS enabled. Responses are cached for 60 seconds, so please don't poll faster than once a minute and cache results on your side.

Prices

GET https://coinmc.org/api/v1/price/?ids=bitcoin,ethereum&vs=usd,eur,gbp

Coin ids are the slug from the coin URL (e.g. /currencies/bitcoin/). Up to 50 coins and 10 currencies per request. Try it: bitcoin and ethereum.

Convert

GET https://coinmc.org/api/v1/convert/?from=btc&to=usd&amount=0.5

Returns the rate and result for any coin/currency pair (or coin/coin). Try it: 1 BTC to USD.

Terms

Free for personal and commercial use with a visible link to CoinMC (for example "Prices by CoinMC"). Data is for information only and comes without warranty; see our terms and methodology. We may rate-limit heavy usage.