SaaS Metrics Calculator – MRR, ARR, and Growth

Calculate key SaaS metrics: MRR, ARR, growth rate, and revenue expansion.

Monthly Recurring Revenue ($)

New MRR this month ($)

Churned MRR this month ($)

About This Calculator

Calculate key SaaS metrics: MRR, ARR, growth rate, and revenue expansion. Use the calculator above for instant results.

Worked Examples

Example 1: $50K MRR, $5K new, $1K churn

Net new: $4K | End MRR: $54K | ARR: $648K | Growth: 8%

Answer: ARR: $648K / 8% MoM

Example 2: $200K MRR, $20K new, $5K churn

End MRR: $215K | ARR: $2.58M | Growth: 7.5%

Answer: ARR: $2.58M

Example 3: $100K MRR, $5K new, $8K churn

Net: -$3K | End MRR: $97K | SHRINKING — churn crisis

Answer: Shrinking MRR

Who Uses This Calculator?

📊

SaaS Founders

Track core revenue metrics.

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Investors

Evaluate growth trajectory.

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CFOs

Monthly financial reporting.

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VCs

Portfolio company monitoring.

Common Mistakes to Avoid

❌ ARR vs MRR

ARR = MRR x 12. Only valid for truly recurring revenue (subscriptions). One-time or irregular revenue should not be annualized.

❌ Mixing contract types

Ensure you only include truly recurring revenue in MRR. Professional services, one-time setup fees, and usage overages are separate.

Frequently Asked Questions

What is MRR?

Monthly Recurring Revenue: predictable monthly revenue from subscriptions. The core SaaS health metric.

T2D3 growth?

Triple, Triple, Double, Double, Double — 3x revenue two years, then 2x three more years. The VC-backable SaaS growth benchmark.

Net Revenue Retention (NRR)?

MRR from existing customers including expansion / starting MRR. Above 100% = negative churn. Best-in-class SaaS: 120%+.