CAC & LTV Calculator

Customer acquisition cost, lifetime value, and the ratio that tells you if growth pays off

Currency

Acquisition

Marketing + sales spend ($)

New customers acquired

Average purchase value ($)

Purchases per month

Avg. customer lifespan (months)

Gross margin (%)

• CAC = total marketing & sales spend / new customers acquired in the same period
• LTV = average purchase value x purchases per month x lifespan x gross margin
• LTV:CAC of 3:1 is the common SaaS / e-commerce health benchmark; 1:1 means you only break even
• CAC payback under 12 months is generally considered efficient
• Set gross margin to 100% to see LTV on revenue instead of profit

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