All our calculators are free to embed. Just copy the code below and paste it into your HTML. The embedded calculator links back to Little Sunny Days, helping us keep these tools free for everyone.
Available Calculators
💰 Mortgage Calculator
Full mortgage payment calculator with taxes, insurance, and amortization.
<iframe src="https://littlesunnydays.com/mortgage-calculator.html" width="100%" height="700" frameborder="0" style="border-radius:12px;border:1px solid #e2e8f0"></iframe><p style="font-size:12px;text-align:center">Powered by <a href="https://littlesunnydays.com">Little Sunny Days</a></p>
📋 Copy Embed Code
⚖️ BMI Calculator
Body Mass Index calculator with visual gauge and health ranges.
<iframe src="https://littlesunnydays.com/bmi-calculator.html" width="100%" height="600" frameborder="0" style="border-radius:12px;border:1px solid #e2e8f0"></iframe><p style="font-size:12px;text-align:center">Powered by <a href="https://littlesunnydays.com">Little Sunny Days</a></p>
📋 Copy Embed Code
📊 Percentage Calculator
All percentage calculations in one tool.
<iframe src="https://littlesunnydays.com/percentage-calculator.html" width="100%" height="500" frameborder="0" style="border-radius:12px;border:1px solid #e2e8f0"></iframe><p style="font-size:12px;text-align:center">Powered by <a href="https://littlesunnydays.com">Little Sunny Days</a></p>
📋 Copy Embed Code
📈 Compound Interest Calculator
Visualize investment growth with interactive charts.
<iframe src="https://littlesunnydays.com/compound-interest-calculator.html" width="100%" height="700" frameborder="0" style="border-radius:12px;border:1px solid #e2e8f0"></iframe><p style="font-size:12px;text-align:center">Powered by <a href="https://littlesunnydays.com">Little Sunny Days</a></p>
📋 Copy Embed Code
🔥 Calorie Calculator
Daily calorie needs with macro breakdown.
<iframe src="https://littlesunnydays.com/calorie-calculator.html" width="100%" height="600" frameborder="0" style="border-radius:12px;border:1px solid #e2e8f0"></iframe><p style="font-size:12px;text-align:center">Powered by <a href="https://littlesunnydays.com">Little Sunny Days</a></p>
📋 Copy Embed Code
How to Embed
Click "Copy Embed Code" for the calculator you want
Paste the code into your website's HTML where you want the calculator
Adjust the height attribute if needed
That's it! The calculator will appear on your site
Terms: Free for any website. Please keep the "Powered by Little Sunny Days" attribution link. No API key needed.