Churn Rate Calculator
Monthly churn = customers lost / start customers. Annualized: 1 − (1−monthly)^12.
Result
Monthly churn
3.00%
Annualized: 30.6%. Healthy (1-3%).
- Start customers1000
- Lost30
- New50
- End customers1020
- Monthly churn3.000%
- Annualized churn30.62%
- Net growth %2.00%
- Avg lifetime33.3 months
- TierHealthy (1-3%)
Step-by-step
- Monthly churn = 30 / 1000 = 3.00%.
- Annualized = 1 − (1 − 0.0300)^12 = 30.62%.
How to use this calculator
- Enter start customers + lost + new.
About this calculator
Churn rate measures customer loss. Two definitions: customer churn (% of customers gone) vs. revenue churn (% of revenue gone — different if losing big or small accounts). Best-in-class SaaS: <1%/mo (12% annualized). Healthy: 1-3%. Above 5%/mo: customer fit problem. Negative net churn (NRR > 100%) means existing customer expansion outpaces losses — holy grail of SaaS. Source: Gainsight Customer Success benchmarks.
Frequently asked
Customer churn: counts users. Revenue churn: counts $. Lose your biggest enterprise: 1% customer / 30% revenue churn.
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