Free calculators you can embed

Add a working calculator to your blog, class page or shop site in 10 seconds. Copy the code, paste it into your page's HTML, done. Free forever, no sign-up, no ads and no tracking inside the widget.

How to add a widget

Pick a calculator below and press Copy code.
In WordPress, Blogger, Wix, Squarespace or Google Sites, add an HTML / Embed block.
Paste the code and publish. The widget resizes to fit phones.

The only thing we ask: keep the small “by ViralScopeHub” credit so others can find the full tool. Need a different calculator? Tell us.

Percentage Calculator

Work out X% of a number and percentage change.

Embed code

<iframe src="https://viralscopehub.com/embed/percentage/" title="Percentage Calculator" width="100%" height="230" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">Percentage Calculator by <a href="https://viralscopehub.com/percentage-calculator/">ViralScopeHub</a></p>

Tip Calculator

Split a bill and tip between friends.

Embed code

<iframe src="https://viralscopehub.com/embed/tip/" title="Tip Calculator" width="100%" height="300" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">Tip Calculator by <a href="https://viralscopehub.com/tip-calculator/">ViralScopeHub</a></p>

BMI Calculator

Body Mass Index for adults, metric units.

Embed code

<iframe src="https://viralscopehub.com/embed/bmi/" title="BMI Calculator" width="100%" height="260" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">BMI Calculator by <a href="https://viralscopehub.com/bmi-calculator/">ViralScopeHub</a></p>

Age Calculator

Exact age in years, months and days.

Embed code

<iframe src="https://viralscopehub.com/embed/age/" title="Age Calculator" width="100%" height="230" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">Age Calculator by <a href="https://viralscopehub.com/age-calculator/">ViralScopeHub</a></p>

Celsius ↔ Fahrenheit

Convert temperatures both ways.

Embed code

<iframe src="https://viralscopehub.com/embed/temperature/" title="Celsius ↔ Fahrenheit" width="100%" height="240" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">Celsius ↔ Fahrenheit by <a href="https://viralscopehub.com/celsius-to-fahrenheit/">ViralScopeHub</a></p>

Loan EMI Calculator

Monthly payment for a loan (any currency).

Embed code

<iframe src="https://viralscopehub.com/embed/emi/" title="Loan EMI Calculator" width="100%" height="300" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">Loan EMI Calculator by <a href="https://viralscopehub.com/loan-emi-calculator/">ViralScopeHub</a></p>

cm ↔ inches

Convert lengths between centimetres and inches.

Embed code

<iframe src="https://viralscopehub.com/embed/cm-inches/" title="cm ↔ inches" width="100%" height="240" style="border:0;max-width:420px" loading="lazy"></iframe>
<p style="font-size:12px;max-width:420px">cm ↔ inches by <a href="https://viralscopehub.com/cm-to-inches/">ViralScopeHub</a></p>

Rules for using the widgets

Free for personal, school, non-profit and business sites.
All maths runs in the visitor's browser. Nothing they type is sent to us.
Results are for general information. For medical, tax or loan decisions, check with a professional.

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