The numbers behind your marketing, calculated in seconds.

Free, no-signup calculators for ROAS, CPA, affiliate earnings, LTV, margins, UTM links and A/B tests. Everything runs in your browser - your data never leaves your device.

Paid ads

Paid adsROAS CalculatorReturn on ad spend plus your break-even ROAS from margin.Paid adsCPM, CPC & CPA CalculatorAll your ad cost metrics - CPM, CPC, CTR, CPA, conversion rate - at once.Paid adsBreak-Even CPA CalculatorThe most you can pay for a customer before an ad campaign loses money.

Affiliate marketing

Affiliate marketingAffiliate Commission & EPC CalculatorEstimate affiliate earnings, EPC and the traffic you need to hit a goal.Affiliate marketingAffiliate Program Revenue Leak CalculatorFor program owners: what your dormant affiliates are costing you each month.Affiliate marketingDormant Affiliate Finder + Email GeneratorUpload a CSV, flag inactive partners by tier, get reactivation emails.

E-commerce & business

E-commerce & businessCustomer Lifetime Value (LTV) CalculatorLTV, LTV:CAC ratio and payback for e-commerce and subscriptions.E-commerce & businessProfit Margin & Markup CalculatorMargin, markup and profit from cost and price - or the price for a target margin.

SEO & tracking

SEO & trackingUTM Link BuilderBuild clean, consistent UTM tracking links for GA4.SEO & trackingSERP Snippet Preview & Meta Length CheckerSee how your title and meta description look in Google - with pixel width.

Testing & CRO

Testing & CROA/B Test Significance CalculatorIs your winning variant real or noise? Get confidence and uplift.

Why GrowthMath?

Most marketing decisions come down to a handful of formulas: what a click is worth, what a customer is worth, and how much you can afford to pay for either. These tools put those formulas in one place, explain the math behind each one, and tell you what the result means - not just the number.