How to use this calculator
- Enter opening cohort mrr, contraction mrr, churned mrr.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
GRR = (opening revenue − contraction − churn) / opening revenue × 100%.
Assumptions and limitations
Losses must not exceed the opening cohort revenue under this definition.
Worked example
With opening cohort mrr = 10000, contraction mrr = 300, churned mrr = 200, gross revenue retention is approximately 95%.
What the result means
GRR excludes expansion and new-customer revenue, isolating recurring-revenue losses.
Common questions
How should I interpret gross revenue retention?
GRR excludes expansion and new-customer revenue, isolating recurring-revenue losses.
What should I check before using this result?
Losses must not exceed the opening cohort revenue under this definition.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.