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Free calculator widgets for your website

Add any GrowthMath calculator to your blog, course, newsletter landing page or client site - free, no signup, no ads inside the widget. Copy the code, paste it into an HTML block, done.

How to embed a calculator

Pick a calculator below and click Embed this calculator.
Copy the code.
In WordPress, add a Custom HTML block and paste it. In Webflow, Ghost, Squarespace or Wix, use the "Embed" or "HTML" element.

The widget resizes itself to fit, works on mobile, and runs entirely in your visitor's browser - nothing they type is sent anywhere. If your platform strips scripts, the iframe still works; it just keeps a fixed height, so raise the height value if it gets cut off.

Terms

Widgets are free for any site, commercial or not. Please keep the credit line under the calculator and do not frame the widget inside a page that misrepresents what it does.

All embeddable calculators

ROAS Calculator

Return on ad spend plus your break-even ROAS from margin.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/roas-calculator/" title="ROAS Calculator" data-gm="roas-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/roas-calculator/">ROAS Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

CPM, CPC & CPA Calculator

All your ad cost metrics - CPM, CPC, CTR, CPA, conversion rate - at once.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/cpm-cpc-cpa-calculator/" title="CPM, CPC &amp; CPA Calculator" data-gm="cpm-cpc-cpa-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/cpm-cpc-cpa-calculator/">CPM, CPC &amp; CPA Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Break-Even CPA Calculator

The most you can pay for a customer before an ad campaign loses money.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/break-even-cpa-calculator/" title="Break-Even CPA Calculator" data-gm="break-even-cpa-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/break-even-cpa-calculator/">Break-Even CPA Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Affiliate Commission & EPC Calculator

Estimate affiliate earnings, EPC and the traffic you need to hit a goal.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/affiliate-commission-calculator/" title="Affiliate Commission &amp; EPC Calculator" data-gm="affiliate-commission-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/affiliate-commission-calculator/">Affiliate Commission &amp; EPC Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Affiliate Program Revenue Leak Calculator

For program owners: what your dormant affiliates are costing you each month.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/affiliate-revenue-leak-calculator/" title="Affiliate Program Revenue Leak Calculator" data-gm="affiliate-revenue-leak-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/affiliate-revenue-leak-calculator/">Affiliate Program Revenue Leak Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Dormant Affiliate Finder + Email Generator

Upload a CSV, flag inactive partners by tier, get reactivation emails.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/dormant-affiliate-finder/" title="Dormant Affiliate Finder + Email Generator" data-gm="dormant-affiliate-finder" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/dormant-affiliate-finder/">Dormant Affiliate Finder + Email Generator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Customer Lifetime Value (LTV) Calculator

LTV, LTV:CAC ratio and payback for e-commerce and subscriptions.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/customer-ltv-calculator/" title="Customer Lifetime Value (LTV) Calculator" data-gm="customer-ltv-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/customer-ltv-calculator/">Customer Lifetime Value (LTV) Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Profit Margin & Markup Calculator

Margin, markup and profit from cost and price - or the price for a target margin.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/profit-margin-calculator/" title="Profit Margin &amp; Markup Calculator" data-gm="profit-margin-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/profit-margin-calculator/">Profit Margin &amp; Markup Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

UTM Link Builder

Build clean, consistent UTM tracking links for GA4.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/utm-builder/" title="UTM Link Builder" data-gm="utm-builder" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/utm-builder/">UTM Link Builder</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

SERP Snippet Preview & Meta Length Checker

See how your title and meta description look in Google - with pixel width.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/serp-snippet-preview/" title="SERP Snippet Preview &amp; Meta Length Checker" data-gm="serp-snippet-preview" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/serp-snippet-preview/">SERP Snippet Preview &amp; Meta Length Checker</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

A/B Test Significance Calculator

Is your winning variant real or noise? Get confidence and uplift.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/ab-test-significance-calculator/" title="A/B Test Significance Calculator" data-gm="ab-test-significance-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/ab-test-significance-calculator/">A/B Test Significance Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

CAC Calculator

Customer acquisition cost - paid and fully loaded - with payback and LTV:CAC.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/cac-calculator/" title="CAC Calculator" data-gm="cac-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/cac-calculator/">CAC Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Churn Rate & MRR Calculator

Customer churn, MRR churn, net revenue retention and average lifetime.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/churn-rate-calculator/" title="Churn Rate &amp; MRR Calculator" data-gm="churn-rate-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/churn-rate-calculator/">Churn Rate &amp; MRR Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Shopify Profit Calculator

Real monthly profit after product, shipping, payment fees, ads and apps.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/shopify-profit-calculator/" title="Shopify Profit Calculator" data-gm="shopify-profit-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/shopify-profit-calculator/">Shopify Profit Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

YouTube Earnings Calculator

Estimate YouTube ad revenue from views and RPM, plus sponsorships.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/youtube-earnings-calculator/" title="YouTube Earnings Calculator" data-gm="youtube-earnings-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/youtube-earnings-calculator/">YouTube Earnings Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Engagement Rate Calculator

Instagram, TikTok or LinkedIn engagement rate by followers and by reach.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/engagement-rate-calculator/" title="Engagement Rate Calculator" data-gm="engagement-rate-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/engagement-rate-calculator/">Engagement Rate Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

A/B Test Sample Size Calculator

Visitors you need per variant - and how many days the test must run.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/ab-test-sample-size-calculator/" title="A/B Test Sample Size Calculator" data-gm="ab-test-sample-size-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/ab-test-sample-size-calculator/">A/B Test Sample Size Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Conversion Rate Calculator

Conversion rate, revenue per visitor and what a higher rate is worth.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/conversion-rate-calculator/" title="Conversion Rate Calculator" data-gm="conversion-rate-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/conversion-rate-calculator/">Conversion Rate Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Break-Even Point Calculator

Units and revenue you need to cover fixed costs - and to hit a profit goal.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/break-even-point-calculator/" title="Break-Even Point Calculator" data-gm="break-even-point-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/break-even-point-calculator/">Break-Even Point Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Email List Growth Calculator

Project your list size from sign-ups and churn - and find its ceiling.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/email-list-growth-calculator/" title="Email List Growth Calculator" data-gm="email-list-growth-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/email-list-growth-calculator/">Email List Growth Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>

Discount Profit Calculator

How many more sales a discount needs just to keep the same profit.

Embed this calculator on your site

Free for blogs, newsletters and client sites. Paste this HTML where you want the calculator - it resizes itself and works on any device. Please keep the credit line.

<iframe src="https://growthmath.io/embed/discount-calculator/" title="Discount Profit Calculator" data-gm="discount-calculator" width="100%" height="620" style="border:0;max-width:820px" loading="lazy" allow="clipboard-write"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://growthmath.io/discount-calculator/">Discount Profit Calculator</a> by GrowthMath</p>
<script>window.addEventListener('message',function(e){var d=e.data;if(e.origin==='https://growthmath.io'&&d&&d.gm==='h')document.querySelectorAll('iframe[data-gm="'+d.slug+'"]').forEach(function(f){f.style.height=d.h+'px'})});</script>