Embed Free Calculators on Your Website

Every FreeKalc calculator can be embedded on your website or blog — free, no signup, no API key, no branding inside the tool. Copy an iframe snippet below, or use any calculator URL with ?embed=1.

Age Calculator

https://freekalc.com/age-calculator

<iframe src="https://freekalc.com/age-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Age Calculator | FreeKalc" loading="lazy"></iframe>

BMI Calculator

https://freekalc.com/bmi-calculator

<iframe src="https://freekalc.com/bmi-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="BMI Calculator | FreeKalc" loading="lazy"></iframe>

Compound Interest Calculator

https://freekalc.com/compound-interest-calculator

<iframe src="https://freekalc.com/compound-interest-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Compound Interest Calculator | FreeKalc" loading="lazy"></iframe>

Hourly to Salary Calculator

https://freekalc.com/hourly-to-salary-calculator

<iframe src="https://freekalc.com/hourly-to-salary-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Hourly to Salary Calculator | FreeKalc" loading="lazy"></iframe>

Loan Calculator

https://freekalc.com/loan-calculator

<iframe src="https://freekalc.com/loan-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Loan Calculator | FreeKalc" loading="lazy"></iframe>

Mortgage Calculator

https://freekalc.com/mortgage-calculator

<iframe src="https://freekalc.com/mortgage-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Mortgage Calculator | FreeKalc" loading="lazy"></iframe>

Paycheck Calculator (US)

https://freekalc.com/paycheck-calculator

<iframe src="https://freekalc.com/paycheck-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Paycheck Calculator (US) | FreeKalc" loading="lazy"></iframe>

Percentage Calculator

https://freekalc.com/percentage-calculator

<iframe src="https://freekalc.com/percentage-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Percentage Calculator | FreeKalc" loading="lazy"></iframe>

Ireland Salary Calculator

https://freekalc.com/salary-calculator-ireland

<iframe src="https://freekalc.com/salary-calculator-ireland?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Ireland Salary Calculator | FreeKalc" loading="lazy"></iframe>

UK Salary Calculator

https://freekalc.com/salary-calculator-uk

<iframe src="https://freekalc.com/salary-calculator-uk?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="UK Salary Calculator | FreeKalc" loading="lazy"></iframe>

Stamp Duty Calculator (UK)

https://freekalc.com/stamp-duty-calculator

<iframe src="https://freekalc.com/stamp-duty-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Stamp Duty Calculator (UK) | FreeKalc" loading="lazy"></iframe>

Take-Home Pay by State (US)

https://freekalc.com/average-take-home-pay-by-state

<iframe src="https://freekalc.com/average-take-home-pay-by-state?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Take-Home Pay by State (US) | FreeKalc" loading="lazy"></iframe>

VAT Calculator

https://freekalc.com/vat-calculator

<iframe src="https://freekalc.com/vat-calculator?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="VAT Calculator | FreeKalc" loading="lazy"></iframe>

Word Counter

https://freekalc.com/word-counter

<iframe src="https://freekalc.com/word-counter?embed=1" width="100%" height="700" style="border:0;border-radius:12px" title="Word Counter | FreeKalc" loading="lazy"></iframe>

How embedding works

Pick a calculator and copy the code from the box (click to select all).
Paste it into any page or post — WordPress, Squarespace, Wix, plain HTML all work.
The calculator loads from our servers and stays up to date with 2026 tax rules automatically.
The ?embed=1 parameter strips the site navigation so only the tool appears.

Why site owners use FreeKalc embeds

Accountants, personal-finance bloggers and HR teams embed our salary, tax and mortgage calculators to give readers an instant answer without leaving the page. Calculations run in the visitor's browser — no data is sent to or stored on any server. A small "Powered by FreeKalc" link appears under each embed, which you may keep or remove.

Frequently asked questions

Is embedding really free?

Yes. Every calculator is free to embed, for commercial and non-commercial sites alike. No attribution is legally required, though a link to freekalc.com is always appreciated.

Can I change the size or styling?

Adjust the width and height attributes in the iframe snippet. The tool is responsive and adapts to the container width.

Which calculators are most popular for embedding?

The UK salary calculator, stamp duty calculator and US paycheck calculator are the most-embedded tools on the site.

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