SaaS Metrics Calculator
Turn your raw numbers into the metrics investors actually ask about — ARR, ARPU, LTV, LTV:CAC ratio and CAC payback — with instant health checks against industry benchmarks.
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Frequently asked questions
How is LTV calculated?
A common formula is LTV = (ARPU × gross margin) ÷ monthly churn rate. This calculator uses gross-margin-adjusted LTV, which is more conservative and accurate than revenue-only LTV.
What is a good LTV:CAC ratio?
The widely cited benchmark is 3:1 or higher. Below 1:1 you lose money per customer; above 5:1 you may be under-investing in growth. See our LTV:CAC guide for detail.
What is CAC payback period?
The number of months it takes to recover the cost of acquiring a customer from their gross-margin contribution. Under 12 months is generally considered healthy for SaaS.
How do I estimate annual churn from monthly churn?
Annual churn is not simply 12× monthly churn because of compounding. The formula is 1 − (1 − monthly churn)^12, which this calculator applies automatically.