Churn Rate Calculator - Monthly and Annual SaaS Churn
Four calculations in one tool: customer churn rate, revenue churn rate, monthly-to-annual conversion, and gross retention. With 2026 benchmarks.
Monthly Customer Churn
3.50%
Annual Equivalent
34.79%
The Four Churn Formulas
Customer (Logo) Churn Rate
Churned Customers / Customers at Start of Period x 100Use start-of-period count as denominator. Exclude mid-period join-and-churn events.
Revenue (MRR) Churn Rate
Churned MRR / MRR at Start of Period x 100Churned MRR includes full cancellations and downgrades. Does not include expansion.
Monthly to Annual Conversion
Annual Churn = 1 - (1 - Monthly Rate)^12Never multiply monthly by 12 - that overstates annual churn significantly.
Gross Revenue Retention
GRR = (Starting MRR - Churned MRR - Downgrade MRR) / Starting MRRGRR is capped at 100%. It excludes expansion. A good proxy for absolute floor of customer value.
Monthly to Annual Churn Conversion Table
| Monthly Churn | Annual Churn (compounded) |
|---|---|
| 0.5% | 5.9% |
| 1% | 11.4% |
| 1.5% | 16.5% |
| 2% | 21.5% |
| 2.5% | 26.2% |
| 3% | 30.6% |
| 3.5% | 34.9% |
| 4% | 38.9% |
| 5% | 46.1% |
| 6% | 52.4% |
| 8% | 63.5% |
| 10% | 71.8% |