Free calculator
Churn Calculator
Churn is the silent killer of SaaS. Plug in your numbers to see your true monthly and annual churn, and how fast your customer base disappears at the current rate.
Monthly churn
4.0%
Annualized churn
38.7%
Revenue lost/mo
$392
Cohort half-life
17 mo
⚠️ Above average. Investigate why customers leave in months 1–3.
Frequently asked
What's a good monthly churn rate?
B2B SaaS: under 1% is excellent, 2–3% is normal, 5%+ is bleeding. SMB/consumer can run 5–7% and still grow if acquisition is strong.
Logo churn vs revenue churn?
Logo = customers lost. Revenue = dollars lost. They differ when you have plan tiers. This calculator measures logo churn; multiply by ARPU for revenue impact.
What's cohort half-life?
The number of months until half your current customer cohort has churned. A useful gut-check on retention.