Embed Free Calculators
On Your Website
Add any of our 412 calculators to your blog, landing page, or app — for free, forever. No signup, no API key, no attribution required. How It Works
Three steps. No account needed.
Choose a Calculator
Browse our directory and find the calculator that fits your content — mortgage, BMI, tip, compound interest, and 346 more.
Add ?embed=1 to Its URL
Take the calculator's URL and append ?embed=1. This activates widget mode — the navbar, footer, and article text are hidden, leaving just the calculator.
Paste the iframe Code
Copy the iframe snippet below and paste it into your WordPress post, Squarespace block, Wix HTML widget, or any page that accepts raw HTML.
Standard iframe Template
<iframe src="https://calculover.com/[calculator-path]/?embed=1" width="100%" height="600" frameborder="0" title="[Calculator Name] | Calculover" loading="lazy" ></iframe>
Replace [calculator-path] and [Calculator Name] with the tool you want. Use the featured codes below for quick copy-paste.
Featured Embed Codes
Click "Copy Code" to copy the full iframe snippet to your clipboard.
Mortgage Calculator
<iframe src="https://calculover.com/finance-wealth/real-estate/mortgage/?embed=1" width="100%" height="600" frameborder="0" title="Mortgage Calculator | Calculover" loading="lazy"></iframe>
Compound Interest Calculator
<iframe src="https://calculover.com/finance-wealth/investing/compound/?embed=1" width="100%" height="600" frameborder="0" title="Compound Interest Calculator | Calculover" loading="lazy"></iframe>
BMI Calculator
<iframe src="https://calculover.com/health-fitness/weight-loss/bmi/?embed=1" width="100%" height="600" frameborder="0" title="BMI Calculator | Calculover" loading="lazy"></iframe>
TDEE Calculator
<iframe src="https://calculover.com/health-fitness/fitness-performance/tdee/?embed=1" width="100%" height="600" frameborder="0" title="TDEE Calculator | Calculover" loading="lazy"></iframe>
Tip Calculator
<iframe src="https://calculover.com/daily-life/food-cooking/tip/?embed=1" width="100%" height="600" frameborder="0" title="Tip Calculator | Calculover" loading="lazy"></iframe>
Tax Bracket Calculator
<iframe src="https://calculover.com/finance-wealth/tax-income/tax/?embed=1" width="100%" height="600" frameborder="0" title="Tax Bracket Calculator | Calculover" loading="lazy"></iframe>
Auto Loan Calculator
<iframe src="https://calculover.com/finance-wealth/loans-debt/auto-loan/?embed=1" width="100%" height="600" frameborder="0" title="Auto Loan Calculator | Calculover" loading="lazy"></iframe>
Concrete Calculator
<iframe src="https://calculover.com/construction-diy/materials/concrete/?embed=1" width="100%" height="600" frameborder="0" title="Concrete Calculator | Calculover" loading="lazy"></iframe>
Calorie Calculator
<iframe src="https://calculover.com/health-fitness/weight-loss/calorie/?embed=1" width="100%" height="600" frameborder="0" title="Calorie Calculator | Calculover" loading="lazy"></iframe>
ROI Calculator
<iframe src="https://calculover.com/finance-wealth/investing/roi/?embed=1" width="100%" height="600" frameborder="0" title="ROI Calculator | Calculover" loading="lazy"></iframe>
Pregnancy Due Date Calculator
<iframe src="https://calculover.com/health-fitness/womens-health/due-date/?embed=1" width="100%" height="600" frameborder="0" title="Pregnancy Due Date Calculator | Calculover" loading="lazy"></iframe>
Profit Margin Calculator
<iframe src="https://calculover.com/business-marketing/sales-revenue/margin/?embed=1" width="100%" height="600" frameborder="0" title="Profit Margin Calculator | Calculover" loading="lazy"></iframe>
Custom Height Guide
Adjust the height attribute to fit your layout. The calculator sends dynamic height updates to the parent page via postMessage, but a sensible default prevents a flash of collapsed content.
| Height | Best for | Example calculators |
|---|---|---|
| 400px | Compact, single-value tools | Tip, Percentage, Unit Converter |
| 600px | Standard calculators (default) | Mortgage, BMI, Tax Bracket, ROI |
| 800px | Full-featured tools with charts or multi-tab layouts | TDEE, Compound Interest, Retirement, FIRE |
You may also listen for the calculover-embed-height postMessage event to auto-size the iframe dynamically as the calculator content changes.
Frequently Asked Questions
Is embedding Calculover tools really free?
Yes, completely free — now and forever. We do not charge for embeds, there is no free tier vs. paid tier, and there is no API key or account required. Our site is supported by ad revenue on the non-embed version of our pages, so embedded widgets are our contribution to the open web.
Do I need to sign up or create an account?
No. Just copy the iframe code and paste it into your site. There is nothing to install, no account to create, and no email required. If you ever want to get in touch, use our contact page.
Can I resize the calculator or change its height?
Yes. Change the height attribute in the iframe tag to any pixel value that suits your layout. We recommend 400px for compact tools, 600px for standard calculators, and 800px for full-featured multi-tab tools. You can also listen for our calculover-embed-height postMessage event to size the iframe dynamically as the calculator content changes.
Will the embedded calculator update automatically?
Yes. Embedded calculators always serve the latest version from our servers. When we update tax brackets, add new features, or fix a calculation, the embedded version on your site updates automatically — you never need to touch your iframe code again.
Are there ads inside the embedded calculator?
No. The ?embed=1 parameter activates a clean widget mode that hides the navbar, footer, related content, and any ad placements. Your readers see only the calculator interface — nothing else.
Browse All 412 Calculators
Find the perfect tool for your audience — finance, health, construction, business, and more.
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