Live preview

This is exactly what your visitors get. Try it.

Option 1 — one line (recommended)

Paste this where you want the calculator to appear:

<div id="rektcalc-widget"></div> <script src="https://rektcalc.com/widget.js"></script>

Option 2 — iframe

If your platform blocks external scripts (some site builders do):

<iframe src="https://rektcalc.com/embed.html" width="360" height="430" style="border:0;max-width:100%" loading="lazy" title="Liquidation calculator"></iframe>

On WordPress? Use the plugin

Download the free plugin, upload it under Plugins → Add New → Upload, activate it, then drop the [rektcalc] shortcode (or the “RektCalc Calculator” block) into any post or page.

Download WordPress plugin (.zip)

[rektcalc]

The only rule

It's completely free. The widget shows a small “by RektCalc” link at the bottom — please keep it. That link is the whole deal: you get a useful free tool, we get a bit of credit. No sign-up, no tracking of your visitors, nothing saved.

Works with

WordPress (Custom HTML block), Ghost, Webflow, Wix, Squarespace, plain HTML — anywhere you can paste code. The calculator runs entirely in the browser, so it never slows your site down or touches your data.