Revenue · Free Interactive Tool
Net Revenue Retention Calculator
The metric that predicts durable growth.
Your Numbers
The Result
The Operator's Read
Above 100% — your existing base grows even if you add zero new customers. That's the holy grail of SaaS.
Built by The Crimson Bench · Educational tool, not financial advice
About the Net Revenue Retention Calculator
Enter starting MRR, expansion, and churned revenue to get NRR — how much revenue you keep and grow from existing customers alone.
How the Net Revenue Retention Calculator Works
3 inputs in, 1 results out — computed live on your device. Here's exactly what it uses.
| Input | Example value |
|---|---|
| Starting MRR | $100,000 |
| Expansion MRR | $15,000 |
| Churned MRR | $8,000 |
Worked Example
Using the example inputs above, the tool returns:
Net revenue retention
107.0%
The Operator's Read
Above 100% — your existing base grows even if you add zero new customers. That's the holy grail of SaaS.
Assumptions & Limitations
- •This is a single-point calculator — it answers one question at a time. For a full time-based projection, use the matching Toolkit Pro simulator.
- •Defaults are illustrative. Replace them with your real numbers before relying on the result.
- •Educational tool only — not financial, investment, tax, or legal advice.
Frequently Asked Questions
What does the Net Revenue Retention Calculator calculate?
Enter starting MRR, expansion, and churned revenue to get NRR — how much revenue you keep and grow from existing customers alone. It takes 3 inputs — Starting MRR, Expansion MRR, Churned MRR — and returns Net revenue retention.
How do I use the Net Revenue Retention Calculator?
Enter your figures in the fields above and the result updates instantly. No signup, no limits, and nothing leaves your browser — the math runs on your device.
Is the Net Revenue Retention Calculator free?
Yes, completely free. For the full time-based simulation — projection tables, scenarios, Excel/PDF export, and AI analysis — see the matching Toolkit Pro simulator.
Who built this tool?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. It uses the exact method they'd apply in an engagement.
Is this financial advice?
No. The Net Revenue Retention Calculator is an educational tool for directional planning — not financial, investment, tax, or legal advice.
Related Revenue Tools
More free calculators in the same category.
Pricing & Margin Calculator
Set a price that hits the margin you actually want.
Rule of 40 Calculator
Are you balancing growth and profit like investors want?
CAC Calculator
What it truly costs to win one customer.
LTV Calculator
What a customer is worth over their whole lifetime.
Churn-to-Lifetime Calculator
Turn a churn rate into how long customers actually stay.
Discount Impact Calculator
How many more sales a discount really requires.
The Crimson Bench · Est. 2002 · Founded in New York City
Need more than a calculator?
Verified corporate accounts only. Ivy League-educated. Flat-rate pricing. 14-day no-cause cancellation.
25,000+ Ivy League Executives · 150,000+ Global Consultants · 48-Hour Deployment