Embed the 401k calculator on your site
Give your readers a fast, no-signup 401(k) calculator. Copy one snippet, paste it into your page, done — it works on WordPress, Squarespace, Webflow, or plain HTML, with no scripts to install. Free to use; just keep the attribution link.
How to add it
The embed is a standard iframe plus a one-line attribution link — no accounts, API keys, or JavaScript libraries. If your platform lets you paste HTML into a page or a “custom HTML” / “code” block, you can add the calculator in under a minute.
- WordPress: add a Custom HTML block and paste the snippet.
- Squarespace / Wix / Webflow: drop in an Embed or Custom Code / HTML element and paste.
- Plain HTML: paste it wherever you want the calculator to appear.
The widget is a lightweight, self-contained page with zero third-party scripts, and it loads lazily so it won’t slow your page down. It sizes to its container up to about 520px wide, so it fits neatly in most article columns and sidebars.
Free to use — one thing we ask
You’re welcome to embed the calculator on any site at no cost. In return, please keep the “Powered by Simple 401k Calculator” link that comes with the snippet, and leave it as a normal, followable link. That attribution is the only thing we ask for the work of building and maintaining the tool.
Credit unions, HR and benefits blogs, financial educators, and personal-finance writers are all welcome to use it. If you’d like a custom size, a co-branded version, or have any questions, email hello@simple401kcalculator.com.