The method
How it is worked out
ARR = MRR × 12 LTV = ARPU × gchurn
- MRR
- Monthly recurring revenue
- ARPU
- MRR ÷ customers
- g
- Gross margin
- churn
- Monthly churn
SaaS Metrics Calculator
See ARR, average revenue per customer, simplified lifetime value and monthly surplus from subscription business inputs. The result updates as you type so you can compare scenarios quickly.
Keep in mind
What it leaves out
- CohortsAverages hide how different customer groups behave. Look at cohorts.
- One-off revenueSet-up fees and services shouldn't be counted as recurring.
- GrowthThis is a snapshot. It doesn't project new sales.
Use the calculator to compare scenarios rather than as a guaranteed forecast.
About the SaaS Metrics Calculator
Review several subscription-business measures together when preparing a monthly operating update. It combines recurring revenue, average revenue per customer, a simplified lifetime-value estimate and the cash difference between monthly recurring revenue and running costs.
How it works and an example to tryShow less
How to use the result
Enter paying customers, monthly recurring revenue, monthly churn, gross margin and monthly running costs. ARR annualises MRR; ARPU divides MRR by customers; the simplified lifetime-value figure uses ARPU, gross margin and churn. Monthly surplus subtracts running costs from MRR. The tool does not calculate customer acquisition cost or an LTV:CAC ratio and does not replace cohort analysis.
Example to try
Use a seed-stage SaaS example with 120 paying customers. Increase churn while holding MRR steady and examine how the estimated customer lifetime value changes; then adjust running costs to see the effect on monthly surplus. Review customer cohorts before trusting an average LTV.
Put it to work
Try it on a real situation
Load an example
What moves the result most
Worked out from your figures above. Tap a row to try it.
Who uses it, and when
Early-stage SaaS teams preparing a monthly investor update, founders sanity-checking a pitch deck, and operators who want ARR, ARPU, lifetime value and surplus in one view.
Mistakes worth avoiding
- Using a blended churn rate when enterprise and self-serve customers behave very differently.
- Reporting lifetime value from a few months of data.
- Forgetting that gross margin in SaaS must include hosting and support costs.
Questions
What does the SaaS Metrics Calculator do?
See ARR, average revenue per customer, simplified lifetime value and monthly surplus from subscription business inputs.
How should I use the result?
Enter paying customers, monthly recurring revenue, monthly churn, gross margin and monthly running costs. ARR annualises MRR; ARPU divides MRR by customers; the simplified lifetime-value figure uses ARPU, gross margin and churn. Monthly surplus subtracts running costs from MRR. The tool does not calculate customer acquisition cost or an LTV:CAC ratio and does not replace cohort analysis.
Does TechBullion store the information I enter?
The core calculation or transformation runs in your browser. Normal website security and analytics may still record page-level events, but the tool does not need to create a public record from your inputs.
What mistakes do people make with a saas metrics calculator?
Using a blended churn rate when enterprise and self-serve customers behave very differently. Reporting lifetime value from a few months of data. Forgetting that gross margin in SaaS must include hosting and support costs.
Is the result guaranteed?
No. Use the result as a practical check or planning aid and verify important decisions with the relevant primary source, provider or professional advice.
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Calculator results are estimates based on the figures entered and are not financial, investment, legal or tax advice.