SaaS Metrics Calculator

By CalculatorInn Team · Updated: 2026-03-22 · Free & accurate · Instant results

Calculate essential SaaS business metrics including MRR, ARR, customer lifetime value, churn rate, and the LTV:CAC ratio.

Interactive SaaS Metrics Calculator

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How to Use This Calculator

Step-by-Step Instructions

  1. Enter your active customers
  2. Enter your avg revenue per user/month
  3. Enter your monthly churn rate
  4. Enter your customer acquisition cost
  5. Enter your monthly recurring revenue (mrr)
  6. Enter your annual recurring revenue (arr)
  7. Enter your customer lifetime value (ltv)
  8. Enter your ltv:cac ratio
  9. Enter your payback period
  10. Results appear instantly — no button needed

Formula

Mathematical Formula

MRR = Customers × ARPU; LTV = ARPU / Monthly Churn; LTV:CAC = LTV / CAC

How It Works

MRR is total monthly recurring revenue. LTV estimates total revenue from a customer before they churn. LTV:CAC should be > 3x for a healthy business.

Frequently Asked Questions

What is a good LTV:CAC ratio?

3:1 or higher is considered healthy. Below 1:1 means you're losing money on every customer. Above 5:1 suggests you could invest more in growth.

What is a good churn rate?

For B2B SaaS, 3-5% monthly is average. Best-in-class companies achieve under 2% monthly churn.

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