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Free SaaS Metrics Tool
MRR & ARR Calculator
Calculate your MRR, ARR, growth rate, and SaaS retention metrics (NRR, GRR, quick ratio) in seconds. Free, private, no sign-up.
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NRR, GRR & quick ratio
Your numbers
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Annual Recurring Revenue (ARR)
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MRR
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ARPU
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MRR growth
MRR movement & retention
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Net new MRR
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Net revenue retention
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Gross revenue retention
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SaaS quick ratio
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What are MRR and ARR?
MRR (Monthly Recurring Revenue) is the predictable subscription revenue you earn each month. ARR (Annual Recurring Revenue) is the annualized version — simply MRR × 12. Together they're the cornerstone metrics for any subscription or SaaS business, used for operational decisions, forecasting, and investor reporting.
The formulas
- Ending MRR = Current (start) MRR + Net new MRR
- ARR = Ending MRR × 12
- ARPU = MRR ÷ number of customers
- MRR growth rate = (Current MRR − Previous MRR) ÷ Previous MRR × 100
- Net new MRR = New + Expansion + Reactivation − Contraction − Churn
- NRR = (Starting MRR + Expansion − Contraction − Churn) ÷ Starting MRR × 100
- GRR = (Starting MRR − Contraction − Churn) ÷ Starting MRR × 100
- Quick ratio = (New + Expansion + Reactivation) ÷ (Contraction + Churn)
What good SaaS metrics look like
- NRR ≥ 100% means you'd grow even with zero new customers — 110%+ is world-class.
- GRR (which never exceeds 100%) above ~90% signals strong core retention.
- Quick ratio ≥ 4 means you add $4 of recurring revenue for every $1 lost — healthy, efficient growth.
- Early-stage SaaS often sustains 2–5% monthly MRR growth; compounding makes that enormous over a year.
When to use MRR vs. ARR
Teams track MRR for day-to-day operational decisions and month-over-month growth, and use ARR for strategic planning and investor communication. If you bill annually, ARR is often the headline; if monthly, MRR leads.
Frequently asked questions
How do I calculate MRR?
Sum the normalized monthly value of all active subscriptions — or multiply your customer count by ARPU. Convert annual plans to monthly (annual price ÷ 12) before adding them in.
What's the difference between NRR and GRR?
Gross revenue retention (GRR) counts only losses (contraction + churn) and caps at 100%. Net revenue retention (NRR) also credits expansion, so it can exceed 100% — the gold standard for SaaS.
What is the SaaS quick ratio?
It compares revenue gained to revenue lost: (New + Expansion + Reactivation) ÷ (Contraction + Churn). A ratio of 4+ is considered healthy, efficient growth.
Is this private and free?
Yes — free, no sign-up, and all math runs in your browser. Your numbers never leave your device unless you choose to email yourself the report.
