Embed Free Calculators on Your Website
Add powerful, beautiful calculators to your blog, portal, or app with a single line of code. No API key, no signup, no cost — just copy and paste.
Why Embed CalcHub?
Free Forever
No cost, no limits, no hidden fees. Use on unlimited pages.
Auto-Updates
We improve calculators constantly. Your embeds update automatically.
Mobile Responsive
Looks great on every screen size. Adapts to your layout.
No API Key Needed
Just paste the iframe code. No registration or configuration.
How It Works
Pick a Calculator
Choose from 15 calculators below.
Copy the Code
Click the copy button to grab the iframe HTML.
Paste on Your Site
Add it anywhere in your HTML. Done!
Choose a Calculator to Embed
Click "Copy Code" to copy the iframe HTML to your clipboard.
EMI Calculator
Calculate Equated Monthly Installments for home loan, car loan, or personal loan. See monthly payments, total interest, and full amortization schedule with interactive charts. Free, no signup.
<iframe src="https://thecalchub.org/embed/emi" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/emi
SIP Calculator
Calculate returns on Systematic Investment Plan (SIP) in mutual funds. See how your monthly investment grows over 5, 10, 20 years with compound returns and interactive growth charts.
<iframe src="https://thecalchub.org/embed/sip" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/sip
Compound Interest Calculator
Calculate compound interest with annual, monthly, quarterly, or daily compounding. Visualize investment growth over time with interactive charts. Free compound interest calculator online.
<iframe src="https://thecalchub.org/embed/compound-interest" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>GST Calculator
Calculate GST, VAT, or Sales Tax on any amount. Add or remove tax at any rate. Country-aware: shows GST for India, VAT for UK/EU, Sales Tax for US. Free tax calculator.
<iframe src="https://thecalchub.org/embed/gst" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/gst
Percentage Calculator
Calculate percentage of a number, percentage increase/decrease, and what percent one number is of another. Three calculation modes for every percentage question. Free, instant results.
<iframe src="https://thecalchub.org/embed/percentage" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>BMI Calculator
Calculate your Body Mass Index (BMI) and find out if your weight is healthy. Supports metric (kg/cm) and imperial (lbs/inches). See your BMI category, healthy range, and personalized tips.
<iframe src="https://thecalchub.org/embed/bmi" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/bmi
Age Calculator
Calculate your exact age in years, months, and days from your date of birth. Find days until your next birthday, age in weeks, and fun milestones. Free online age calculator.
<iframe src="https://thecalchub.org/embed/age" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/age
Discount Calculator
Calculate sale price after any percentage discount. See exactly how much you save and the final price you pay. Works for any store, any sale, any currency. Free discount calculator.
<iframe src="https://thecalchub.org/embed/discount" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Mortgage Calculator
Calculate monthly mortgage payments, total interest, and see a full amortization schedule. Compare 15-year vs 30-year mortgages. Supports any currency and down payment. Free mortgage calculator.
<iframe src="https://thecalchub.org/embed/mortgage" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Salary Calculator
Convert between hourly, daily, weekly, monthly, and annual salary instantly. See your take-home pay breakdown. Perfect for freelancers, job seekers, and salary negotiations worldwide.
<iframe src="https://thecalchub.org/embed/salary" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/salary
Income Tax Calculator
Estimate your income tax for India (old/new regime), USA (federal brackets), and UK (PAYE). See your effective rate, bracket breakdown, and take-home pay. Free income tax calculator.
<iframe src="https://thecalchub.org/embed/income-tax" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Currency Converter
Convert between 30+ world currencies with live European Central Bank rates. USD, EUR, GBP, INR, JPY, AED, CAD, AUD, and more. Real-time exchange rate converter, updated daily.
<iframe src="https://thecalchub.org/embed/currency" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Fuel Cost Calculator
Calculate fuel cost for any trip based on distance, vehicle fuel efficiency, and current fuel price. Plan road trips, estimate daily commute costs, and compare driving vs flying.
<iframe src="https://thecalchub.org/embed/fuel" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/fuel
Retirement Calculator
Plan your retirement savings and calculate how much to save monthly. Supports 401(k), pension, and FIRE planning. See if your corpus will last through retirement with compare mode.
<iframe src="https://thecalchub.org/embed/retirement" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Tip Calculator
Calculate tip amount and split the bill between friends at restaurants. See tip for 15%, 18%, 20%, or custom percentage. Per-person breakdown for groups. Free tip calculator.
<iframe src="https://thecalchub.org/embed/tip" width="100%" height="600" frameborder="0" style="border:0;border-radius:12px;" loading="lazy"></iframe>Preview: https://thecalchub.org/embed/tip
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Frequently Asked Questions
Is embedding really free?
Yes, 100% free. No limits on embeds, pages, or traffic. We only ask that you keep the "Powered by CalcHub" credit link visible.
Can I customize the height?
Yes! Adjust the height attribute in the iframe code. We recommend 500-700px for most calculators. The width is always 100% to fit your container.
Will it slow down my website?
No. The iframe loads lazily (only when scrolled into view) and is served from a fast CDN. It won't affect your page load speed.
Does it work with WordPress, Wix, Squarespace, etc.?
Yes! Any platform that supports custom HTML or iframe blocks will work. Just paste the code in an HTML block.
Do I need an API key or account?
No. Just copy the iframe code and paste it on your site. No signup, no API key, no configuration.