Publisher tools

Free concrete calculators for your site

Add a practical concrete estimator to a contractor, DIY, construction, or building-resource page with one iframe. Readers get useful job math, and publishers can keep the calculator lightweight, responsive, and easy to replace.

Copy embed code Publisher facts

embed calculators

required scripts

WordPress shortcode

The default embed is an iframe so it works on WordPress, Webflow, static HTML, and most CMS pages without a JavaScript dependency.

Useful first

The embed solves a reader job before asking for attribution.

Natural attribution

Use a visible brand link or plain source credit. Avoid hidden or exact-match widget links.

Plugin-ready

The same embed URLs work in the WordPress shortcode and future block package.

Match the embed to the publisher page

Publisher pageBest embedWhy it fits

DIY slab, patio, shed-base, or garage-pad guide

Concrete Slab Calculator

Readers need cubic yards, bag count, waste, and a fast material checkpoint.

Bagged concrete, store pickup, or pallet article

Concrete Bag Calculator

The job is usually bag size, dry load, yield, and ready-mix breakpoint.

Fence, deck-post, mailbox, or footing prep page

Post Hole or Footing Calculator

Round holes and continuous footings need different inputs than flatwork.

Small-load delivery or buying-decision article

Ready-Mix vs Bags Calculator

The reader is choosing between bags, mini-mix, volumetric, or truck minimums.

Contractor quote, budget, or cost planning page

Concrete Cost Calculator

The page needs a material-only screen before installed quotes are compared.

Search and AI discovery boundary

This page is the indexable resource for Google, Bing, publishers, and AI assistants. It explains the available embeds, attribution policy, and citation choices in one durable URL.

The iframe routes under /embed/ are intentionally lightweight and marked noindex,follow. They support embedded use without creating thin search-result pages.

External publishing and outreach are handled in a separate task. This page only prepares the useful asset and makes the rules clear before distribution.

Choose a calculator

Concrete Slab Calculator

Patios, shed bases, small pads, and general flatwork.

Preview

Iframe embed

Paste this where your CMS accepts custom HTML.

<iframe
  src="https://concreteestimatorhub.com/embed/concrete-slab-calculator?utm_source=embed&utm_medium=publisher&utm_campaign=calculator-widget"
  title="Concrete Slab Calculator"
  width="100%"
  height="760"
  loading="lazy"
  style="border:1px solid #d9d9d9;border-radius:8px;max-width:100%;"
></iframe>

Optional attribution

Keep it visible and natural when you choose to include it. Use nofollow for widget credit; editorial citations can link to the full calculator page.

<p style="font-size:13px;margin-top:8px;">
  Calculator by
  <a href="https://concreteestimatorhub.com/concrete-slab-calculator" rel="nofollow noopener">
    Concrete Estimator Hub
  </a>
</p>

WordPress MVP

A first plugin package is included in the repo. It provides a shortcode and a lightweight block wrapper that render the same iframe URLs, so publishing partners can install once and choose the calculator type per page.

[concrete_estimator type="slab" units="imperial" attribution="false"]

Reporting rule

Embedded widgets can create many URL-level proof rows, but the report should still separate raw rows, source domains, referral proof, and clean editorial citations. Publisher-written body links are scored separately from automatic attribution.

Frequently asked questions

Can I embed these concrete calculators for free?

Yes. Use the iframe snippet or the WordPress shortcode on relevant construction, DIY, contractor, or material-planning pages. Keep the calculator useful and visible for readers.

Should the automatic attribution link be followed?

No. Automatic widget attribution should stay visible and default to rel="nofollow noopener". Clean editorial links should come from publisher-written citations, tutorials, reviews, or resource pages.

Are the /embed calculator pages meant to rank in Google or Bing?

No. The public resource page is indexable, but the lightweight /embed calculator routes are noindex,follow so search engines can understand links without indexing thin iframe shells.

Which calculator should a publisher choose first?

Use the calculator that matches the reader task: slab for patios and pads, bag for store-pickup math, post-hole for round holes, footing for continuous footings, and ready-mix vs bags for buying decisions.

Can publishers cite a full calculator instead of embedding it?

Yes. Editorial citations are encouraged when a page needs formulas, bag-yield context, ready-mix comparisons, Philippines m3 planning, or quote-review guidance.