Put a free calculator on your site
Every Calcistry tool is free to embed on your blog, newsletter or client site — no sign-up, no fees, ever. Copy the snippet, paste it into your page's HTML, and you're done. The calculator resizes itself and always works. We only ask that you keep the small credit link.
How to embed a calculator
- Pick a calculator above and click Copy code.
- Paste it into your page where you want the tool to appear — in WordPress use a Custom HTML block; in Webflow/Squarespace use an Embed / Code block.
- Publish. The calculator loads instantly and auto-sizes to fit. Nothing to maintain — updates happen on our side.
Rules (they're simple)
- Free forever for any site, including commercial ones.
- Keep the credit link to Calcistry that comes with the snippet — that's the only condition.
- Don't modify the calculator's logic or misrepresent the results as your own tool.
Calculators are educational estimates, not financial advice. Questions or want a tool we don't have yet? Get in touch.