How to use this calculator
Use a common cohort and period, such as monthly starting recurring revenue and monthly churn. Scenario mode assumes each lost customer had average starting revenue.
Formula and method
Logo churn = lost/start customers. GRR = (start revenue−churn−contraction)/start revenue. NRR = (start revenue−churn−contraction+expansion)/start revenue.
Worked example
Starting revenue 100,000, churn 5,000, contraction 2,000, expansion 3,000 gives GRR 93% and NRR 96%.
Assumptions and supported scope
Cohort definitions must stay consistent. Scenario uniformity can differ sharply from actual revenue-weighted churn. No new-customer revenue or tax.
Method references
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