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Net Revenue Retention (NRR) Calculator

Measure revenue retention including expansions, contractions, and churn.

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MRR from existing customers at start of period
MRR added from upgrades and upsells
MRR lost from downgrades
MRR lost from cancellations
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Enter your numbers and click Calculate to see your results.

Frequently Asked Questions

Everything you need to know about cac calculator.
What is Net Revenue Retention (NRR)?
NRR (also called Net Dollar Retention or NDR) measures how much revenue you retain and grow from your existing customer base over a period. Formula: NRR = (Beginning MRR + Expansion MRR − Contraction MRR − Churned MRR) ÷ Beginning MRR × 100. An NRR of 110% means that even if you acquired zero new customers, your revenue would grow 10% from your existing base.
NRR benchmarks: Below 90% — significant churn problem requiring urgent attention; 90–100% — acceptable but not growth-oriented; 100–110% — healthy, existing customers are growing; 110–120% — strong, characteristic of best-in-class SaaS; Above 120% — exceptional, typical of top-tier enterprise SaaS companies like Snowflake and Datadog. Public SaaS companies with NRR above 120% typically command premium valuation multiples.
Improving NRR requires a two-pronged approach: reducing churn (through better onboarding, customer success, and product improvement) and increasing expansion revenue (through upselling to higher tiers, cross-selling additional products, and usage-based pricing that grows with customer success). The most effective lever is often building a formal expansion motion — dedicated customer success managers with expansion quotas.
High NRR fundamentally changes the economics of growth. A company with 120% NRR needs to acquire far fewer new customers to achieve the same growth rate as a company with 90% NRR. This means lower CAC requirements, more capital efficiency, and a more defensible business model. Investors view high NRR as evidence of strong product-market fit and customer satisfaction.

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