Pop-Up Calculator Widgets

Free Calculator Widgets for Your Website | Embed Calculators

Free Calculator Widgets for Your Website

Embed any of our free calculators on your site in minutes. Copy the HTML code, paste it into your page, and the calculator is live for your visitors.

How to Add a Calculator Widget in 3 Steps

1
Choose a Calculator
Browse the categories below and pick the calculator that fits your page.
2
Copy the Code
Click “Copy Code” to copy the HTML embed snippet to your clipboard.
3
Paste on Your Page
Paste the code into your HTML editor, WordPress block, or website builder.

Browse and Embed Calculator Widgets

Filter by category to find the right calculator widget for your page. Click Copy Code to grab the embed snippet.

%
Percentage Increase Calculator
Find the percent increase between two numbers. Shows formula and step by step solution.
<iframe src=”https://thecalculatorsoup.com/percentage-increase-calculator/” width=”100%” height=”520″ frameborder=”0″ title=”Percentage Increase Calculator”></iframe>
Δ%
Percentage Change Calculator
Calculate percent change between an original and new value. Shows increase or decrease.
<iframe src=”https://thecalculatorsoup.com/percentage-change-calculator/” width=”100%” height=”520″ frameborder=”0″ title=”Percentage Change Calculator”></iframe>
nr
Permutation with Replacement
Calculate PR(n,r) = n^r. Ordered arrangements with replacement allowed.
<iframe src=”https://thecalculatorsoup.com/permutation-with-replacement-calculator/” width=”100%” height=”580″ frameborder=”0″ title=”Permutation with Replacement Calculator”></iframe>
√
Square Root Calculator
Find the square root of any number. Supports decimals and large values.
<iframe src=”https://thecalculatorsoup.com/square-root-calculator/” width=”100%” height=”480″ frameborder=”0″ title=”Square Root Calculator”></iframe>
💰
Loan Calculator
Calculate monthly payments, total interest, and amortization for any loan.
<iframe src=”https://thecalculatorsoup.com/loan-calculator/” width=”100%” height=”600″ frameborder=”0″ title=”Loan Calculator”></iframe>
📈
Compound Interest Calculator
Find future value of an investment with compound interest. Set frequency and term.
<iframe src=”https://thecalculatorsoup.com/compound-interest-calculator/” width=”100%” height=”600″ frameborder=”0″ title=”Compound Interest Calculator”></iframe>
❤
BMI Calculator
Calculate Body Mass Index from height and weight. Supports metric and imperial units.
<iframe src=”https://thecalculatorsoup.com/bmi-calculator/” width=”100%” height=”520″ frameborder=”0″ title=”BMI Calculator”></iframe>
🔥
Calorie Calculator
Estimate daily calorie needs based on age, weight, height, and activity level.
<iframe src=”https://thecalculatorsoup.com/calorie-calculator/” width=”100%” height=”560″ frameborder=”0″ title=”Calorie Calculator”></iframe>
📅
Date Difference Calculator
Find the number of days, weeks, or months between two dates.
<iframe src=”https://thecalculatorsoup.com/date-difference-calculator/” width=”100%” height=”500″ frameborder=”0″ title=”Date Difference Calculator”></iframe>
⏰
Age Calculator
Calculate exact age in years, months, and days from a birth date to today.
<iframe src=”https://thecalculatorsoup.com/age-calculator/” width=”100%” height=”480″ frameborder=”0″ title=”Age Calculator”></iframe>
℃
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly.
<iframe src=”https://thecalculatorsoup.com/temperature-converter/” width=”100%” height=”480″ frameborder=”0″ title=”Temperature Converter”></iframe>
⚖
Weight Converter
Convert kilograms, pounds, ounces, grams, and more instantly.
<iframe src=”https://thecalculatorsoup.com/weight-converter/” width=”100%” height=”500″ frameborder=”0″ title=”Weight Converter”></iframe>

Calculator Widget Categories

CategoryExample CalculatorsBest For
MathPercentage, square root, permutations, fractionsEducational sites, tutoring blogs, homework help
FinanceLoan, mortgage, compound interest, ROIFinance blogs, real estate, banking, investment sites
HealthBMI, calorie, ideal weight, body fatHealth and fitness blogs, nutrition sites
Date and TimeAge, date difference, time zones, days untilEvent planning, HR tools, productivity apps
ConversionsTemperature, weight, length, volume, speedRecipe sites, travel blogs, science and engineering
StatisticsMean, median, standard deviation, z scoreResearch blogs, data analysis, academic sites
GeometryArea, perimeter, volume, triangle solverArchitecture, construction, education

What Are Calculator Widgets?

Calculator widgets are small embedded tools that add a working calculator to any webpage without requiring you to build one from scratch. Calculator widgets load inside an iframe element, so the calculator runs on our servers while appearing seamlessly within your site. Visitors get a fully functional tool without leaving your page.

Embedding a calculator on a relevant page adds utility for your readers, increases time on site, and can improve SEO by making your content more comprehensive and useful.

Who Uses Calculator Widgets?

Bloggers, publishers, educators, and businesses embed calculator widgets to add instant value for their readers. A personal finance blog might embed a loan calculator on a debt payoff article. A health site might add a BMI calculator to a weight loss guide. A math tutoring site might include percentage calculators on lesson pages.

How to Embed a Calculator on WordPress

Embedding a calculator on WordPress is simple and does not require a plugin. Copy the embed code from any calculator widget card above, then open your WordPress post or page editor. Switch from the visual editor to the code editor or use an HTML block in the Gutenberg editor. Paste the iframe code into the HTML block and save. The calculator appears live on your page immediately.

Tip: Set the iframe width to 100% so the calculator scales correctly on mobile devices. Adjust the height as needed to avoid scroll bars inside the widget frame.

Embedding on Wix and Squarespace

Both Wix and Squarespace support custom HTML embed blocks. In Wix, add an HTML iframe element from the Add Panel. In Squarespace, insert a Code Block into your page layout. Paste the embed code into either block and the calculator widget appears on your published page.

Benefits of Adding Calculator Widgets

Benefits of adding calculator widgets include increased visitor engagement, longer session times, and more return visits. Readers who find a working tool on your page are more likely to bookmark it and share it. Calculators also answer specific questions that bring in search traffic, making them effective SEO assets when placed on relevant content pages.

  • Keep visitors on your page longer by providing an interactive tool.
  • Answer specific numerical questions your readers have while reading your content.
  • No maintenance required since the calculator updates on our end automatically.
  • Works on any device without additional setup.
  • Free with no account or payment required.

Frequently Asked Questions

To embed a calculator widget, choose the calculator you want, copy the provided HTML embed code, and paste it into the HTML of any webpage. The widget loads inside an iframe and works immediately without any additional setup.
Yes, all calculator widgets are free to embed on your website. No registration or payment is required. Simply copy the embed code and paste it into your page.
Available calculator widget categories include math, finance, health, date and time, statistics, algebra, geometry, physics, and unit conversions. Each category contains multiple specialized calculators you can embed individually.
Yes, all calculator widgets are fully responsive and work on mobile devices, tablets, and desktop computers. The widget automatically adapts its layout to fit the screen size of the visitor’s device.
Yes, you can adjust the width and height values in the iframe embed code to match the layout of your webpage. Change the width and height attributes in the HTML to your preferred dimensions. Setting width to 100% is recommended for responsive layouts.
No coding knowledge is required. The embed code is a simple HTML snippet that you copy and paste into your page. Most website builders including WordPress, Wix, and Squarespace accept raw HTML embed blocks where you can paste the code directly.