Customer Acquisition Cost Calculator
Work out your CAC and LTV:CAC ratio in seconds, and see whether your growth is sustainable. Free, with no signup.
Total sales & marketing spend
New customers acquired
Average customer lifetime value (optional, for LTV:CAC)
Work out your customer acquisition cost and your LTV:CAC ratio in seconds. Free and calculated in your browser.
How it works
Enter your spend
Add your total sales and marketing spend for the period.
Enter new customers
Add how many customers that spend acquired.
Add LTV (optional)
Include lifetime value to get your LTV:CAC ratio.
Read the result
See your CAC and whether your growth economics are healthy.
Know what a customer really costs
Customer acquisition cost is one of the most important numbers in any business. If you don't know it, you can't tell whether your marketing is making or losing money.
This free calculator gives you CAC instantly, and adds the LTV:CAC ratio when you enter a lifetime value, the quickest gut-check on whether your growth is sustainable.
Cold email lowers CAC
Paid channels keep getting more expensive. Cold email reaches exactly the prospects you choose at a fraction of the cost per customer.
Emailchaser helps you find and verify prospects and run follow-up sequences that convert, a direct lever on the CAC you just calculated.
Cheaper acquisition is one lever on your LTV:CAC ratio. The other is how many of the trials you already paid for ever become paying subscriptions, and our sister product 1Capture works that side: it runs card-on-file free trials inside your existing Stripe account, so trial-to-paid conversion does not depend on the customer coming back to enter a card.
Related free tools
Common questions about customer acquisition cost
How do you calculate customer acquisition cost?
CAC = total sales and marketing spend ÷ the number of new customers acquired in the same period. For example, $10,000 of spend that wins 40 customers gives a CAC of $250.
What is a good LTV:CAC ratio?
Most healthy businesses aim for an LTV:CAC ratio of around 3:1, each customer is worth about three times what it costs to acquire them. Below 1:1 you're losing money; far above 5:1 you may be under-investing in growth.
What should I include in CAC?
Include all sales and marketing costs for the period: ad spend, salaries, tools, agencies and content. Divide by the new customers those efforts produced for a true picture.
How can I lower my CAC?
Cheaper, higher-converting channels lower CAC. Cold email is one of the lowest-cost channels, verified targeting and good follow-up bring the cost per customer down fast.
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