Love our calculators? Put them on your site.
Completely free. No API keys, no usage limits. Your visitors get beautiful, accurate calculators — you don't build or maintain them. One line of code, and it's live.
Three steps. Five minutes.
No API keys. No dependencies. No build step.
Choose a calculator
Pick from 150+ calculators: stamp duty, mortgage repayments, take-home pay, pension, and more.
Copy the embed code
One iframe tag. Paste it into your HTML, CMS, or page builder. It works everywhere.
It's live on your site
Your visitors get a fast, beautiful calculator. We handle updates and maintenance. You focus on your business.
Who uses this
Businesses embed our calculators to help their visitors make decisions.
Estate Agents
Stamp duty and mortgage calculators on property listings.
Mortgage Brokers
Affordability and repayment tools for client conversations.
HR & Recruitment
Take-home pay calculators alongside job listings.
Health & Fitness
BMI, TDEE, and macro calculators for wellness blogs.
See it in action
Real-world examples of everycalc embedded on business websites.
Property Listing
See our stamp duty calculator embedded on a property listing page.
Mortgage Broker
See our mortgage calculator on a broker's website.
Job Listing
See our take-home pay calculator on a recruitment site.
Free embed: Stamp Duty Calculator
Copy the code below and paste it anywhere in your HTML. The calculator loads instantly, runs entirely in the visitor's browser, and stays up to date automatically.
Responsive design - works on any screen size
No cookies, no tracking of your visitors
Tax rates updated automatically each April
Only condition: keep the "Powered by everycalc" link visible
<iframe
src="https://everycalc.io/embed/stamp-duty"
width="100%"
height="700"
style="border: none; border-radius: 8px;"
title="Stamp Duty Calculator"
></iframe>Works with WordPress, Squarespace, Wix, Webflow, and any HTML page.
Want more calculators?
We have embeddable versions of all our tools. Tell us which ones you need and we'll set them up for you.
Frequently asked questions
Is it really free?
Yes. Embedding is completely free with no usage caps. The only condition is keeping the small "Powered by everycalc" link visible.
Do I need an API key?
No. Just paste the iframe code into your page. No registration, no API keys, no build step.
Will it slow down my site?
No. The embed loads inside an iframe and doesn't block your page from rendering. Our calculators are static-site generated and served from a global CDN.
Does it track my visitors?
No. We don't use cookies, fingerprinting, or any visitor tracking. All calculations run entirely in the visitor's browser.
How often are tax rates updated?
UK tax rates are updated each April when the new fiscal year starts. Stamp duty thresholds are updated whenever the government changes them. Your embed stays current automatically.
Can I customise the look and feel?
The embed supports light and dark mode automatically. For deeper customisation — brand colours, default values, or a white-label version — get in touch and we'll work something out.
Let's talk
Whether you need a single embed or a custom integration, we'd love to hear from you.
[email protected]We typically respond within 24 hours.