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True Trade Path

For trade owners

Add a free estimate calculator to your website

Lead with customer-facing cost and sizing tools — not your internal shop-rate sheet. One line of HTML, no ads, no visitor tracking, optional branding, and a single Powered-by line on embeds.

Tools available
117
Cost
Free
Lead selling
None

Recommended sets by trade

Three calculators per trade — estimate a job, qualify a visitor, or size materials. Not markup-margin or hourly-rate, which belong on your phone, not your homepage.

Plumber website

Help visitors estimate repair scope before they call — without exposing your shop rate.

Electrician website

Qualify panel, EV, and lighting jobs with calculators homeowners understand.

HVAC contractor website

Mini-split, efficiency, and emergency cost tools that pre-educate the caller.

Roofing contractor website

Squares and material sizing plus rough replacement context — not your margin sheet.

Remodeling / carpentry website

Room and renovation estimators for design-build firms.

Live preview on a mock page

Pick a tool and paste your branding. The iframe loads the real embed route — what you see is what visitors get.

Mock contractor site

Your Company Name

Free estimate — powered by True Trade Path embed

One “Powered by True Trade Path” line stays on embeds; your logo alone on printed PDFs.

Attribution policy

Your logo and colors on the page around the iframe. One modest “Powered by True Trade Path” link on the embed itself — not keyword-stuffed anchor text. Anything the visitor prints or exports as a PDF from your session carries your branding alone on the document.

Full catalogue

Grouped by what the tool does for your website:

  • Estimate a job for a visitor

    Repair Cost · Renovation Cost · Room Renovation · Mini-Split Cost

  • Answer a price question

    EV Charger Cost · Generator Cost · Emergency Cost

  • Size materials on site

    Roofing Squares · Fence Material · Concrete · Deck Material

For schools and unions

Career and field-math embeds still belong on apprenticeship pages and union training sites — same policy: no ads, no tracking. Start from the full picker below or email us for a curated list for your program.

Why we give these away

A wire-size calculator is more useful sitting next to an apprenticeship application than it is on our site. If you run a training program, a union local, a community college trade department or a contracting business, the tool belongs where your readers already are.

We get something from it too, and it is worth being plain about what: people who use a tool on your site sometimes come looking for the rest of them. That is the entire arrangement. There is no data exchange, no lead sharing, and nothing we collect from your visitors.

Pick a tool and copy the snippet

Ohm's Law Calculator

Live preview

Making the frame resize itself

Calculators change height as people use them, so a fixed-height iframe either clips the answer or leaves white space beneath it. The embed posts its height to your page whenever it changes. Add this once, anywhere on the page, and every embed on it will size itself:

<script>
  window.addEventListener("message", function (e) {
    if (!e.data || e.data.type !== "ttp:embed:height") return;
    document.querySelectorAll('iframe[src*="truetradepath.com/embed/"]').forEach(function (f) {
      if (f.contentWindow === e.source) f.style.height = e.data.height + "px";
    });
  });
</script>

It checks the message type and matches the frame by its own content window, so another script on the page cannot resize our embed by posting a lookalike message.

Content Security Policy

If your site sends a CSP, the embed needs frame-src truetradepath.com — or child-src on older policies. Nothing else: the embed loads no fonts, scripts or images from anywhere else.

Common questions

What does it cost?
Nothing, and there is no tier where it starts costing something. You are not agreeing to a licence, you are not creating an account, and we are not going to email you about upgrading.
Do the embeds show ads?
No. The embedded version loads no advertising and no analytics of any kind — not ours and not Google's. We do not think it is right to pull a tracker into your site's pages, and AdSense expects ads to run on our inventory rather than yours.
Do you track our visitors?
No. The embed sets no cookies, loads no third-party script and sends us no data about who used it. The only message it emits is its own pixel height, posted to your page so the frame can resize itself.
Is attribution required?
The embed carries a small branded link back to the tool, and we ask that you leave it in place, but nothing breaks if your design cannot accommodate it. We deliberately do not use keyword-stuffed anchor text: Google treats widget links with rich anchors as a link scheme, and we are not interested in putting your site or ours at risk for a ranking signal.
Will the calculation change without warning?
The maths can change when a code cycle or a published table changes, because a calculator that quietly stays wrong is worse than one that changes. What will not change without a redirect is the embed URL.
Can we self-host it instead?
If an iframe is not workable for you, email hello@truetradepath.com and tell us what you need. We would rather solve it than have you rebuild the calculator.

Something you need that is not here? Email hello@truetradepath.com. If you are also running a training program or an apprenticeship, listing it here is free as well.

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