SaaS metrics calculator

Turn raw SaaS numbers into unit economics: MRR ⇄ ARR conversion, LTV from monthly churn, LTV:CAC health benchmarking, and CAC payback periods.

How to SaaS metrics calculator

1. Step 1. Enter monthly recurring revenue (MRR) and average revenue per user (ARPU).
2. Step 2. Add your customer acquisition cost (CAC) and monthly churn rate.
3. Step 3. Review ARR, LTV, the LTV:CAC ratio, and the CAC payback period.
4. Step 4. Read the benchmark gauge to see how your unit economics score.

Frequently asked questions

What is a good LTV:CAC ratio?

3x–5x is the widely accepted healthy range; above 5x suggests under-investing in growth and below 3x means acquisition is too expensive.

How is LTV calculated?

LTV = ARPU ÷ monthly churn rate. For example, $49 ARPU at 3.5% monthly churn gives an LTV of about ,400.

What is the CAC payback period?

The months it takes for a customer’s gross margin to recover what you spent acquiring them — CAC ÷ ARPU here.