Free calculator widgets
Put a 17x7 calculator on your own website with two lines of HTML. Free for personal and commercial sites — the only condition is that you keep the visible "Powered by 17x7" link.
- No sign-up or API key
- No cookies, no ad trackers
- Works on any site that allows iframes
How it works
- Pick a calculator below and press Copy embed code.
- Paste the code into your page's HTML — a WordPress "Custom HTML" block, a Squarespace code block, a Webflow embed or plain HTML all work.
- Adjust the
heightif your column is narrow; the calculator stacks its results under the form on small screens.
The license, in one sentence
You may embed any widget on this page for free, on any site, as long as the "Powered by 17x7" link that comes with the code stays visible, unmodified and followable — no rel="nofollow", no hiding it with CSS. That link is the whole price. Full terms are in our terms of use.
Privacy for your visitors
The widget runs entirely in your visitor's browser. It sets no cookies and sends nothing about what is typed into it. Like every page on 17x7.com, it loads Cloudflare's cookieless page-view counter (Web Analytics), which records that the widget page was viewed — not who viewed it and not what was entered; there are no ad or social scripts. It will not slow your page down: it is lazy-loaded, so it only loads when a visitor scrolls to it.
Etsy Fee Calculator
Every Etsy fee on one order — listing, transaction, processing, Offsite Ads — and what you actually keep. Open the full page.
Amazon FBA Calculator
Size tier, fulfillment fee, referral fee and storage for one unit, with margin and ROI. Open the full page.
Roof Pitch Calculator
Pitch from rise and run (or angle) plus degrees, slope, rafter length, squares and shingle bundles. Open the full page.
Deck Material Calculator
Boards, joists, hangers and screws for a rectangular deck — cut-aware, with the least-waste board length. Open the full page.