Net Revenue Retention Calculator

What it measures

Understanding Net Revenue Retention

Calculate recurring revenue retained after expansion, contraction, and churn. CalcPilot applies the formula NRR = (Starting MRR + Expansion − Contraction − Churn) ÷ Starting MRR × 100 to the values you enter and updates the result in your browser. NRR above 100% means expansion from the starting cohort exceeded revenue lost to downgrades and churn. Before comparing results, define each input consistently: use the same reporting period, currency, customer definition, and accounting scope. Small definition changes can move the answer more than the arithmetic itself. The result measures recurring revenue retained from the opening customer base without including new-logo revenue. Treat the result as a decision aid rather than a guarantee. Run a base case, a conservative case, and an ambitious case to see which assumption has the greatest effect. Pair this metric with the adjacent measures linked below so an apparently strong number does not hide weak cash flow, margin, retention, or execution quality. Track NRR by cohort, segment, geography, and product to reveal where expansion and retention differ. The most useful analysis records the source and date of every input, then repeats the calculation on a regular schedule. Currency changes, usage revenue, migrations, acquisitions, and inconsistent MRR normalization can distort the metric.