Monthly Recurring Revenue Calculator

About this calculator

Monthly Recurring Revenue (MRR) is the headline growth metric for subscription businesses: it normalizes all recurring subscription income — whatever the billing cycle — into a single monthly figure, computed as active subscribers times ARPA (average revenue per account). Multiplying MRR by 12 gives Annual Run Rate (ARR), the number investors and boards use to talk about a SaaS company's size.

Because MRR strips out one-time fees and non-recurring revenue, it lets a company track predictable, compounding growth month over month, and it feeds directly into other core SaaS metrics like net revenue retention, CAC payback period, and the Rule of 40. This calculator turns your subscriber count and ARPA into both figures at once.