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Free Marketing Calculators

Free marketing calculators for the numbers every paid campaign lives on: ROAS and break-even ROAS, CTR, CPC, CPM, CPA, cost per lead, customer acquisition cost, churn and retention, plus budget planners for Google Ads and Meta ads and a title tag checker.

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Ad Copy Character Counter

Paste headlines, descriptions and primary text. See the character limit for Google, Microsoft, Meta or LinkedIn and exactly what is over.

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Break-Even ROAS Calculator

The ROAS at which a campaign stops losing money, for a product margin or an app's install-to-paid funnel.

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Churn Rate Calculator

Customers at start, lost and added in. Monthly and annual churn rate out.

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Cost Per Lead Calculator

Spend and leads in. CPL and max CPL from deal economics out.

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Cost Per Acquisition Calculator

Spend and conversions in. CPA, max CPA and margin out.

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Cost Per Click Calculator

Spend and clicks in. CPC and implied scale out. Reverse mode too.

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CPM and eCPM Calculator

Spend and impressions in. CPM and eCPM out. Reverse mode too.

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Click-Through Rate Calculator

Impressions and clicks in. CTR, benchmark and verdict out.

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Customer Acquisition Cost Calculator

Sales and marketing spend and new customers in. CAC and LTV ratio out.

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Email Subject Line Tester

Score a subject line out of 100 on length, mobile cut-off, spam triggers, capitals, punctuation and preview text. No signup.

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Facebook and Instagram Ads Cost Calculator

Target conversions, CPM, CTR and landing page conversion rate in. Budget and CPA out.

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Google Ads Budget Calculator

Target leads, CPC and conversion rate in. Monthly and daily budget out.

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Retention Rate Calculator

Cohort data or day-based metrics in. Retention rates and trend out.

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ROAS Calculator

Revenue, spend and margin in. ROAS, profit and cost per order out.

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Title Tag Checker

Pixel width, character count, keyword position and a 0 to 100 score for any title tag and meta description.

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UTM Link Builder

Build a tagged campaign URL that GA4 attributes correctly, with lowercase, spacing and ordering mistakes caught before you ship.

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Reference

Marketing Glossary

Every metric here, defined with the formula.

Reading

Conversion rate optimisation

Where the cheapest gains usually are.

The marketing metrics these calculators cover, in the order they matter

Efficiency of the ad itself: CTR, CPC and CPM tell you whether the creative and the auction are working. Efficiency of the funnel: CPA, cost per lead and customer acquisition cost tell you what a customer costs after the click. Whether it pays back: ROAS, break-even ROAS, churn and retention tell you whether the customer is worth what you paid. The budget calculators for Google Ads and Facebook ads work backwards from the leads or conversions you want to the spend you need.

Each page prints its formula, gives a worked example and explains what a good number looks like for the situation, not a single universal benchmark. Results carry a shareable link, so a media buyer can send the exact scenario to a client or a founder.

Questions people ask

What is a good ROAS?

One above your break-even with room to spare. Break-even ROAS is price divided by contribution margin, so a 40 percent margin needs 2.5x just to stop losing money. Use the break-even ROAS calculator first, then aim for 1.3x to 2x that.

What is the difference between CPA and CAC?

CPA is the cost of one conversion from ad spend alone. CAC is the full cost of acquiring one customer, including sales salaries, tools and commissions, divided by new customers. CAC is always higher and is the number that belongs in a board deck.

Can I use these calculators for an app instead of an ecommerce store?

Yes. Several have an app mode, for example the break-even ROAS calculator converts your margin into a maximum cost per install. The app-specific tools live under app marketing tools.