Net Revenue Retention Calculator

Enter starting MRR, expansion, contraction, and churn to find net revenue retention.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

Net revenue retention (NRR) measures how much recurring revenue a SaaS company keeps and grows from its existing customer base alone, with new-customer sales excluded entirely. The formula is: (starting MRR + expansion revenue − contraction − churn) ÷ starting MRR, expressed as a percentage — expansion comes from upsells and upgrades, contraction from downgrades, and churn from customers who cancel.

An NRR above 100% means existing customers are spending more over time even before counting a single new sale — a strong signal of product stickiness and pricing headroom — while NRR below 100% means the existing base is shrinking in revenue terms regardless of new logo growth. SaaS operators and venture investors treat NRR as one of the most important health metrics in a subscription business, with 100–120%+ generally considered a strong benchmark. This calculator takes your starting MRR, expansion, contraction, and churn to compute NRR.

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