Free Remodel Cost Calculator for Contractor Websites
This is a free remodel cost calculator for contractor websites: a remodel cost calculator widget that gives homeowners a ballpark from your own per-square-foot rates and sends you their contact details with the scope they chose. One copy-paste, no plugin, no cost.
What your visitors see.
Five quick steps, then a contact form before the price is revealed — the same lead-capture pattern we build into custom contractor sites. Try it: this demo sends its leads to us, yours will go to you.
- Room, size, finish level — kitchen, baths, basement, whole-house, additions and more.
- Smart follow-up questions — what kind of addition, whether the plumbing moves, load-bearing walls, a basement bathroom — the things that actually swing the price, each priced in automatically.
- Three finish tiers with real products — homeowners see exactly what "budget" vs "high-end" means, and you can rename the brands to what you actually install.
- Your rates, not ours — set your own $/sq ft for every room and tier. Change them any time.
- Contact details before the number — name, phone and email land in your inbox with the full estimate.
- Matches your site — pick an accent color; the widget is sealed off from your theme's CSS so nothing breaks either way.
Three steps. About five minutes.
1. Set your rates
Enter your business name, the email leads should go to, and your price per square foot for each room and finish level. We pre-fill national averages so you can just adjust.
2. Paste the code
Copy three lines into any page — WordPress, Squarespace, Wix, Webflow, plain HTML. No plugin to install, nothing to maintain; updates roll out from our end automatically.
3. Leads hit your inbox
Every completed estimate is emailed to you with the homeowner's name, phone, email, the project and the range they saw. We don't keep their details — they're your lead, not ours.
Why it's free: the embed code carries a one-line credit linking back to The Digital Keystone. That link is the whole deal. It stays, and in return you get the tool, the hosting and the updates for nothing. Want it with no credit line, or built around your exact services? That's a custom job, and we're happy to quote it.
Build your estimator.
Fill this in once and your embed code is ready. Need to change your rates later? Come back and run it again with the same email — your existing code updates automatically.
Paste this where you want the calculator to appear.
Where to paste it
- WordPress: add a Custom HTML block to the page and paste the code into it.
- Squarespace: add a Code block (not Embed) and paste; make sure "Display Source" is off.
- Wix: Add → Embed Code → Embed HTML, paste, then resize the box to fit.
- Webflow: drop in an Embed element and paste.
- Any other site: paste it into the page's HTML where the calculator should show.
Keep all three lines together, including the credit line. Changing your settings later? Run this generator again with the same email address — the code you already pasted picks up the new numbers automatically.
Questions contractors ask.
Yes. There is no charge, no trial and no upsell inside the widget. The only condition is the one-line credit that links back to The Digital Keystone — that link is how we get paid, in the form of exposure. If it is removed, the calculator re-adds it.
Straight to the email address you enter when you generate the code — every completed estimate, with the homeowner's name, phone, email, the project details and the price range they were shown. We relay the email; we do not store the homeowner's details or contact them.
Any time. Come back to this page and run the generator again with the same email address. Your existing embed code keeps working and starts using the new rates on the next page load — nothing to re-paste.
No. It is one small script that loads after your page, and it renders inside its own sealed container, so your site's styles cannot break it and it cannot affect anything else on your page. You choose the accent color so it fits.
As accurate as the rates you enter. The widget shows a range of about 15% either side of your price per square foot, clearly labeled as a preliminary estimate rather than a quote. The defaults are national averages from major cost guides — most contractors adjust them to their market.
That is a custom build rather than the free tool — a calculator designed around your services, pricing model and brand, hosted on your own site. It is one of the things we do most often for contractors; get in touch and we will scope it.
Want a calculator built around your exact services?
Roofing, pools, additions, insurance restoration — we build custom estimators, before/after sliders and lead-capture tools into contractor websites every week.