Free calculators for your website

Embed a BusCalc calculator

Add one of twelve free, ad-free calculators to your website. Choose a tool, preview it, then copy the embed code into your website’s HTML block.

Choose a calculator

Every widget uses the same calculation engine as its full BusCalc page. Decision Feasibility includes the five focused plan workflows; the complete study opens on BusCalc. CRE covers acquisition, improvements and holding, not construction development.

Copy this HTML into your page

<iframe src="https://buscalc.com/embed/area-and-square-footage/" title="Area and square footage — BusCalc" width="100%" height="850" loading="lazy" referrerpolicy="no-referrer" sandbox="allow-scripts allow-forms allow-same-origin allow-popups allow-popups-to-escape-sandbox allow-downloads allow-modals"></iframe>
<p><a href="https://buscalc.com/calculators/area-and-square-footage/" target="_blank" rel="nofollow noopener noreferrer">Calculator by BusCalc</a></p>

Use a width of 100% and adjust the 850-pixel height for your layout. Longer forms scroll inside the widget. Some website builders require a plan that supports custom HTML. No host-page script, account, API key or payment is needed.

Live widget preview

Choose the right calculator for your readers

Area and square footage — Contractors, flooring and property guides. Full calculator and method →
Feet and inches — Woodworking, construction and measurement guides. Full calculator and method →
Concrete slab volume and bags — Concrete suppliers and trade guides. Full calculator and method →
Roof area and roofing squares — Roofing contractors and suppliers. Full calculator and method →
Markup vs margin — Retail, pricing and business education. Full calculator and method →
Break even sales — Small-business and finance publishers. Full calculator and method →
Equipment loan payment — Equipment dealers and financing guides. Full calculator and method →
Fleet cost per mile — Fleet operators and delivery guides. Full calculator and method →
Recipe portion cost — Restaurants, culinary guides and suppliers. Full calculator and method →
Liquid pour yield and shrinkage — Bars, breweries and hospitality suppliers. Full calculator and method →
Decision feasibility calculator — Focused business, production, equipment, staffing and delivery decisions. Full calculator and method →
Commercial real estate feasibility calculator — Commercial property acquisition and hold analysis. Full calculator and method →

Privacy, attribution and limits

Widget calculations run in the visitor’s browser. These widget pages do not initialize Google Analytics, use purchase sessions or transmit calculator inputs/results to BusCalc. Cloudflare and the publisher can still process web requests under their own policies. No information is sent to the parent page through cross-window messages. Browser extensions or a malicious publisher’s surrounding content are outside BusCalc’s control.

Use the supplied Calculator by BusCalc attribution. Attribution links use nofollow; there is no required keyword-rich backlink or promise of search-ranking benefit. No forced popup or automatic redirect occurs.

Keep units, guidance and assumptions visible. Examples are illustrative, and results do not constitute professional approval. You may use these free widgets on your website, including a commercial website; do not present BusCalc as endorsing your business or conceal the source, limitations or controls. The embed URLs are intended to remain stable, while fixes may update the interface. Calculation limits · Privacy