MRR / ARR Calculator
Project your monthly recurring revenue from new, expansion, and churned MRR. Get net new MRR, growth rate, ending MRR/ARR, and a month-by-month table — plus customer count and implied LTV if you know your ARPU. Everything runs in your browser.
About this tool
This calculator treats new, expansion, and churned MRR as steady dollar amounts per month, which is how most early-stage teams actually track them. That makes the projection linear rather than compounding — honest for a 6–12 month horizon, increasingly optimistic (or pessimistic) beyond that, since in reality churn scales with your base and new MRR scales with your pipeline. Every formula is printed above so the numbers are auditable.
The implied LTV uses the simplest standard model — average revenue per user divided by monthly churn rate — which assumes churn stays constant forever. Treat it as a sanity check, not a valuation input. Nothing you type leaves the page; there is no server and no tracking of tool inputs.