Embed the swim time converter

A compact calculator for articles, club sites, and meet pages. Paste this HTML into an embed or custom HTML block.

Appearance

Embed code

<iframe src="https://turnmark.app/embed/v1/" title="Swim time converter by Turnmark" width="100%" height="820" loading="lazy" referrerpolicy="strict-origin-when-cross-origin" style="max-width:640px;border:0;border-radius:16px;"></iframe>

Preview the converter

Free to embed, with a Turnmark credit and source link. Calculations run in the reader’s browser; the widget doesn’t access your swim history. No API key or publisher JavaScript required. Full widget reference

Add it to a page

Choose an appearance Follow the reader’s device, or keep the widget light or dark.
Paste the embed code Copy the HTML into a custom HTML or embed block in your editor. In WordPress, use a Custom HTML block.
Preview and publish Check the converter in your page. Some editors require permission to use iframes.

The widget adapts to the space available, down to 320 pixels wide. Increase the iframe’s height if your layout or larger text needs more room.

If your site uses a Content Security Policy, allow https://turnmark.app in frame-src. No API key, npm install or parent-page script is needed.

What readers get

Convert between SCY, SCM and LCM. Results retain their destination distance, source and published-factor or derived-estimate label. Missing factors stay unavailable.

Calculations continue offline after the widget loads. It does not read saved comparisons, browser storage or the publisher’s page. Hosting still involves ordinary network requests for the initial assets.

Keep the Turnmark credit and source link visible. Standards, points, altitude and personal history are available in the full calculator.