Start with recurring revenue
Estimate starting MRR, new MRR, expansion, contraction and churn before annualizing revenue into ARR.
SaaS planning hub
SaaS revenue calculators for MRR, ARR and growth planning.
Start with the recurring revenue bridge, then pressure-test churn, LTV, CAC, pricing, payback and runway. Each calculator runs in the browser and includes formulas, examples and common mistakes.
Core SaaS calculators
Choose the metric you need to model.
SaaS Revenue Calculator
Estimate SaaS MRR, ARR and net revenue growth from customers, ARPA, churn and expansion.
SaaS MRR Calculator
Estimate monthly recurring revenue, churn impact and next-month MRR for a subscription product.
ARR Calculator
Convert monthly recurring revenue into annual recurring revenue and model ARR movement.
MRR Growth Calculator
Calculate net MRR growth from new, expansion, contraction and churned recurring revenue.
Churn Rate Calculator
Calculate customer churn, retention and net customer change for a subscription business.
LTV Calculator
Estimate customer lifetime value from ARPU, gross margin, churn and acquisition cost.
CAC Calculator
Estimate customer acquisition cost and payback period from marketing, sales and new customer inputs.
Subscription Pricing Calculator
Estimate the monthly subscription price needed to cover costs, payment fees and target profit.
Payback Period Calculator
Estimate how many months it takes for monthly gross profit to recover an upfront cost.
Cash Runway Calculator
Estimate monthly burn, runway months and the revenue gap needed to reach break-even.
Metric workflow
Build a SaaS forecast from the bottom up.
Check acquisition quality
Compare CAC, payback and LTV so growth does not rely on customers who cost too much to acquire.
Stress-test cash timing
Use runway and pricing checks to see whether the scenario can survive slow sales, churn or delayed cash.
SaaS guides
Read the formulas before you use them.
MRR vs ARR
Understand the difference between MRR and ARR, when each SaaS revenue metric matters, and how to calculate both from recurring revenue.
Calculate SaaS revenue
A practical guide to calculating SaaS revenue from starting MRR, new MRR, expansion, contraction, churn and ARR.
SaaS revenue metrics
A practical checklist of SaaS revenue metrics for founders: MRR, ARR, net new MRR, churn, expansion, CAC, LTV, payback and runway.
CAC payback for SaaS
Learn how to calculate CAC payback for SaaS using acquisition cost, ARPA, gross margin and monthly contribution profit.
LTV:CAC ratio
Calculate and interpret LTV:CAC ratio for SaaS using gross margin, churn, average revenue per account and acquisition cost.
Net revenue retention
Learn how to calculate net revenue retention for SaaS using starting MRR, expansion, contraction and churned revenue.
Gross revenue retention
Learn how to calculate gross revenue retention for SaaS and why GRR reveals retention issues that expansion revenue can hide.
ARPU vs ARPA
Understand the difference between ARPU and ARPA for SaaS, including formulas, examples and when each metric is more useful.
Revenue churn vs customer churn
Compare revenue churn and customer churn for SaaS, with formulas, examples and guidance for account-size differences.
MRR growth rate
Learn how to calculate MRR growth rate from net new MRR and starting MRR, with examples for SaaS planning.
How to use this SaaS calculator hub
Use the SaaS revenue calculator for a broad snapshot, then move into the specific metric that looks fragile. If growth is weak, open the MRR growth calculator. If acquisition looks expensive, compare CAC, LTV and payback. If revenue is growing but cash is tight, check runway with conservative expenses.
Good inputs to collect
- Starting MRR and current paying customers.
- New MRR, expansion MRR, contraction MRR and churned MRR for the period.
- Acquisition spend, new customers, gross margin and monthly operating cost.
Keep the model conservative
- Normalize annual contracts into MRR before comparing periods.
- Separate customer churn from revenue churn when account sizes vary.
- Run a downside case before making hiring, ad spend or funding decisions.
Planning note
These tools are for scenario planning only. Compare the estimates with your billing, analytics and accounting data before making financial decisions.