Paste two lines of HTML to add a live currency converter to any page. No API key, no signup, no credit card — the widget pulls real exchange rates from UniRate's public endpoint the moment the page loads.
Works on WordPress, Wix, Squarespace, Webflow, Ghost, and plain HTML. Supports 170+ currencies. Used on 400+ sites.
<link rel="stylesheet" href="https://unirateapi.com/lander/static/css/unirate-widgets.css">
<script src="https://unirateapi.com/lander/static/js/unirate-widgets.js"></script>
<div id="unirate-converter" data-from="USD" data-to="EUR" data-amount="100"></div>Three lines. Paste them anywhere in your HTML and the widget renders itself — no build step, no bundler, no framework.
<link rel="stylesheet" href="https://unirateapi.com/lander/static/css/unirate-widgets.css">
<script src="https://unirateapi.com/lander/static/js/unirate-widgets.js"></script>
<div id="unirate-converter" data-from="USD" data-to="EUR" data-amount="100"></div>Every widget is configured entirely with data-* attributes on the container <div>. The widget reads them on load; no JavaScript configuration needed.
| Attribute | Used by | Accepted values | Default |
|---|---|---|---|
| data-from | converter, badge, travel | Any ISO 4217 code (USD, EUR, GBP, …) | USD |
| data-to | converter, badge, travel | Any ISO 4217 code | EUR |
| data-amount | converter, calculator, badge | Positive decimal | 100 |
| data-base | calculator, rate table | Any ISO 4217 code | USD |
| data-currencies | calculator, rate table | Comma-separated ISO codes (EUR,GBP,JPY) |
EUR,GBP,JPY,CAD,AUD |
| data-country | VAT calculator | ISO 3166-1 alpha-2 country code | DE |
The widget also auto-respects your site's light or dark palette via prefers-color-scheme, so you do not need to configure colours manually.
The same three-line snippet works on every major site builder. These are the exact steps for the four most common hosts.
Edit a post or page, click the + button, and add a Custom HTML block. Paste the three-line snippet into the block and publish. No plugin required — the block keeps the markup intact without wrapping it in paragraphs.
In the editor, open Add Elements → Embed & Social → Embed HTML. Drag it onto the page, click Enter Code, and paste the snippet. Wix renders the widget inside an iframe, which already isolates your site's CSS.
Click the + insertion point, choose Code, and paste the snippet. Leave the HTML display mode selected (do not use Markdown). The widget renders instantly in the editor preview.
Paste the two <link>/<script> lines in your <head> (once per page) and drop the <div id="unirate-converter"> anywhere in the body. Works with any CMS that allows raw HTML blocks.
Every variant uses the same <link> and <script> tags above — only the container <div> changes.
Two-currency input with a swap button and live result. The default embed on this page.
<div id="unirate-converter" data-from="USD" data-to="EUR" data-amount="100"></div>Convert one base amount into a basket of target currencies at once.
<div id="unirate-calculator" data-base="USD"
data-amount="100" data-currencies="EUR,GBP,JPY,CAD,AUD"></div>Clean table view of one base against a set of quote currencies. Ideal for sidebars and finance pages.
<div id="unirate-table" data-base="USD"
data-currencies="EUR,GBP,JPY,CAD,AUD,CHF"></div>Compact single-line display of one pair. Drop it anywhere you need a live quote without a full form.
<div id="unirate-badge" data-from="USD" data-to="EUR" data-amount="1"></div>Calculates VAT / GST for 120+ countries using UniRate's tax-rate feed.
<div id="unirate-vat" data-country="DE"></div>Shows how far a budget goes in the destination currency plus the local VAT rate — designed for travel blogs.
<div id="unirate-travel" data-from="USD" data-to="EUR"></div>No. The widget hits UniRate's public rate endpoint directly, which is unauthenticated and rate-limited to 60 requests per minute per IP. You only need an API key if you plan to call the UniRate API from your own server.
Yes — including paid products, client sites, SaaS apps and ad-supported media. We only ask that you keep the widget's default "Powered by UniRate" link in place; it is what allows us to keep the public endpoint free.
170+ fiat currencies and the major cryptocurrencies. See the full ISO 4217 codes reference for every code the widget accepts in data-from, data-to, data-base and data-currencies.
Yes. Set the data-from and data-to attributes on the converter and badge, or data-base + data-currencies on the calculator and rate table. The user can then swap to any other supported currency from the dropdowns in the widget itself.
Yes — paste the three-line snippet into a Custom HTML block, no plugin required. It works the same way on Wix (Embed HTML element), Squarespace (Code block), Webflow (Embed component), Ghost (HTML card) and any other CMS that allows raw HTML.
UniRate aggregates rates from 12 sources — ECB, Coinbase, RBA, BoC, TCMB, LBMA and others — and refreshes them hourly. The widget fetches the latest cached rate on page load, so your visitors always see a rate that is at most an hour old.
Yes. If you need historical rates, time-series data, or higher request volumes, the UniRate Forex API covers 170+ currencies with 27 years of history and code samples in cURL, Python, Node, PHP and Go. The free tier gives you 200 requests per day with no credit card.
The free plan includes 200 API requests per day, real-time rates for 170+ currencies and 27 years of historical data. Same data that powers the widget — with full programmatic access.
200 requests/day free · No card required · Pro plan from $9/mo