Free Calculator Widgets for Your Website

Q: Can I change the size or styling of a widget?

You can set any width and height on the iframe — width 100% with a height between 600 and 800 pixels works well for most calculators. Internal styling is fixed so the tools stay consistent and readable.

Embed any of our 38 home improvement calculators on your blog or website with one copy-paste snippet — free, responsive, and no signup required.

Last updated: July 2026

How it works: copy the iframe code for any calculator below, paste it into your page's HTML, and your readers get a fully working calculator without leaving your site. Free for any website, forever.

Why Embed a Calculator?

If you write about DIY, home improvement, landscaping, or renovation, an interactive calculator keeps readers on your page instead of sending them off to search for one. Embedded tools increase time on page, give your content a practical edge most articles lack, and answer the exact question your reader came with — "how much do I actually need?"

Free for any site — personal blogs, business sites, or publications
Responsive — adapts to your page width, works on mobile
No tracking of your visitors — embeds contain no analytics
Always current — we maintain the math and prices; your embed updates automatically
Lightweight — a single iframe, no scripts to install

The only requirement: the small "Powered by DIYCalcTools" attribution link inside the widget stays visible.

Live Example

This is the paint calculator embedded exactly as it would appear on your site:

Popular Widgets — Copy the Code

Each snippet below is ready to paste. Adjust the height value if your page needs a taller or shorter frame.

Paint Calculator

Gallons of paint by room size, coats, and openings

<iframe src="https://diycalctools.com/embed/paint-calculator/" width="100%" height="700" frameborder="0" title="Paint Calculator - DIYCalcTools"></iframe>

Concrete Calculator

Cubic yards and bags for slabs and footings

<iframe src="https://diycalctools.com/embed/concrete-calculator/" width="100%" height="700" frameborder="0" title="Concrete Calculator - DIYCalcTools"></iframe>

Shed Material Calculator

Complete lumber, roofing, and siding list

<iframe src="https://diycalctools.com/embed/shed-calculator/" width="100%" height="700" frameborder="0" title="Shed Material Calculator - DIYCalcTools"></iframe>

Decking Calculator

Boards, joists, screws, and footings

<iframe src="https://diycalctools.com/embed/decking-calculator/" width="100%" height="700" frameborder="0" title="Decking Calculator - DIYCalcTools"></iframe>

Fence Calculator

Posts, rails, and pickets by style

<iframe src="https://diycalctools.com/embed/fence-calculator/" width="100%" height="700" frameborder="0" title="Fence Calculator - DIYCalcTools"></iframe>

Roofing Calculator

Shingle bundles and underlayment by pitch

<iframe src="https://diycalctools.com/embed/roofing-calculator/" width="100%" height="700" frameborder="0" title="Roofing Calculator - DIYCalcTools"></iframe>

Mulch & Gravel Calculator

Cubic yards, bags, or tons by depth

<iframe src="https://diycalctools.com/embed/mulch-calculator/" width="100%" height="700" frameborder="0" title="Mulch & Gravel Calculator - DIYCalcTools"></iframe>

BTU Calculator

AC and heater sizing for any room

<iframe src="https://diycalctools.com/embed/btu-calculator/" width="100%" height="700" frameborder="0" title="BTU Calculator - DIYCalcTools"></iframe>

Every Calculator Is Embeddable

All 38 calculators have embed codes — browse the full collection on the homepage or by category (interior, exterior, landscaping), open any calculator, and scroll to the "Embed This Calculator" section at the bottom of the page for its snippet.

Widget FAQ

Yes — free for any website, commercial or personal, with no signup, no API key, and no usage limits. The only condition is that the "Powered by DIYCalcTools" attribution link inside the widget remains visible.

No. The embedded versions contain no analytics, no cookies, and no tracking of any kind. All calculations run in your visitor's browser.

You can set any width and height on the iframe — width="100%" with a height between 600 and 800 pixels works well for most calculators. The internal styling is fixed so the tools stay consistent and readable, and they adapt automatically to the width you give them.