Put a working calculator on your website — free
Every calculator on Calcaholic can live on your site with one copy-paste snippet. No account, no API key, no JavaScript conflicts, no cost. It just works — and it keeps working, because we maintain it.
How it works
- Pick a calculator. Browse our full collection — grades, finance, health, DIY materials, and more.
- Click "</> Add to your website." Every calculator page has the button, right under the tool.
- Paste the snippet anywhere in your page's HTML. That's it — the calculator renders inside your page, styled, mobile-responsive, and always up to date.
See it live
This is our Tip Calculator, embedded on this page with the exact same snippet you'd use:
Who embeds our calculators
- Real estate agents & lenders — the mortgage, VA loan, and property tax calculators keep visitors on your listing pages.
- Teachers & school sites — the final grade and GPA calculators are the tools your students are Googling anyway.
- Fitness coaches & health blogs — TDEE, BMI, and macro calculators turn articles into tools.
- Contractors & garden centers — concrete, mulch, and paint calculators answer the question every customer calls to ask.
- Financial advisors — compound interest and retirement calculators, with the disclaimers already built in.
The fine print (it's short)
The snippet includes a small "Powered by Calcaholic" attribution link — please keep it; it's how a free tool stays free. The calculators are provided as-is under the same disclaimer that governs our site. We may update a calculator's design or content over time (that's a feature — your embed gets the improvements automatically). No signup, no tracking of your visitors beyond the same anonymous analytics our own site uses.
Frequently asked questions
Does it really cost nothing?
Nothing. No trial, no tier, no credit card. The attribution link is the entire price.
Will it slow down my site?
No — the calculator loads inside an iframe with loading="lazy", so it doesn't load until a visitor scrolls to it, and it can't block or conflict with your page's own scripts or styles.
Can I resize it?
Yes. The snippet's width is fluid (100% up to a max), and you can change the height or max-width values in the style attribute to fit your layout.
Do the embedded calculators show ads?
No. Embedded calculators are ad-free — we keep advertising on our own site, not yours.
Can you build a custom calculator for my business?
Possibly! Get in touch and tell us what you need — the weirder the calculator, the more we like it.