Calculator widgets

Put a useful calculator on your page

Embed free Toolkit Shelf calculators on relevant web pages. Widgets show their method, keep Toolkit Shelf attribution, store no entered data, and contain no ads.

No ads inside embedsNo entered data savedVisible Toolkit Shelf attribution

Configure and preview

Choose a calculator, check it at a narrow width, then copy the installation code. Changing settings restarts the preview; calculation values are never included in the code.

Calculator

AppearanceCurrencyAccentStarting values

Resize height automatically

Currency changes labels only; enter all prices in that currency. Automatic height uses the small script below. Choose iframe-only if your editor blocks scripts; the fixed-height frame may scroll.

Installation code

<iframe src="https://toolkitshelf.com/embed/shopping-package-comparison?theme=light&amp;accent=%232c615b&amp;currency=USD&amp;start=example" title="Shopping Package Comparison" loading="lazy" width="100%" height="1200" style="border:0;border-radius:12px" referrerpolicy="strict-origin-when-cross-origin"></iframe>
<script>(function(){var frame=document.currentScript.previousElementSibling;if(!frame||frame.tagName!=="IFRAME")return;var origin=new URL(frame.src).origin;function requestHeight(){if(frame.contentWindow)frame.contentWindow.postMessage({type:"toolkitshelf:request-embed-height"},origin);}function receive(event){if(!frame.isConnected){window.removeEventListener("message",receive);return;}var data=event.data;if(event.origin!==origin||event.source!==frame.contentWindow||!data||data.type!=="toolkitshelf:embed-height"||typeof data.height!=="number"||!isFinite(data.height))return;frame.style.height=Math.min(2400,Math.max(320,Math.ceil(data.height)))+"px";}window.addEventListener("message",receive);frame.addEventListener("load",requestHeight);requestHeight();}());</script>

Paste into a Custom HTML block or your page template. Preview here uses this environment; installation code loads the widget from toolkitshelf.com. Check the installed page on mobile as well as desktop.

Shopping Package Comparison

Preview width

Three useful starting points

Choose the right calculation

Use a widget where it helps the reader. Its full calculator remains the source for examples and assumptions. Attribution is for identification; this is not a required ranking backlink.

Shopping Package Comparison

Compare mixed weight labels and assumed usable shares, then calculate whole packages, checkout cost and usable leftovers for the amount you need. Entered values stay in the widget.

Checkout total = round up (usable amount needed / usable amount per package) x package price

Open full calculator

Meeting Cost Calculator

Estimate the cost of a meeting from attendee count, duration, loaded hourly cost, and meeting frequency without sending entered values to Toolkit Shelf.

Cost per meeting = attendees x (meeting minutes + preparation minutes) / 60 x loaded hourly cost

Open full calculator

Manual Review Cost Calculator

Estimate monthly manual-review labor cost from review volume, handling time, loaded hourly cost, and working days without storing entered values.

Monthly review cost = reviews per day x working days x minutes per review / 60 x loaded hourly cost x (1 + QA overhead / 100)

Open full calculator

Need structured results instead of a widget? Explore the API and MCP pilot.

Put a useful calculator on your page

Make it fit your page

Shopping Package Comparison

Choose the right calculation

Shopping Package Comparison

Meeting Cost Calculator

Manual Review Cost Calculator