SaaS Metrics Calculator
Calculate MRR, ARR, LTV, CAC, and other key SaaS metrics.
Project SaaS revenue growth over time.
Formula
MRR = Total Customers x ARPA. ARR = MRR x 12. LTV = ARPA x (1 / Monthly Churn) x Gross Margin. CAC = (Marketing + Sales Spend) / New Customers. LTV:CAC Ratio = LTV / CAC.
Frequently Asked Questions
What is a good LTV:CAC ratio for SaaS?
A healthy LTV:CAC ratio is 3:1 or higher, meaning you earn $3 in lifetime value for every $1 spent acquiring a customer. Below 1:1 means you lose money on each customer. Above 5:1 may indicate you are under-investing in growth.
What is a good monthly churn rate for SaaS?
For B2B SaaS, a monthly churn rate of 3-5% is common for SMB customers, while enterprise SaaS targets under 1% monthly churn. For B2C SaaS, 5-7% monthly churn is typical. Reducing churn by even 1% can dramatically increase LTV.
How is ARR different from MRR?
MRR (Monthly Recurring Revenue) is the total predictable revenue per month. ARR (Annual Recurring Revenue) is MRR x 12. ARR is the standard metric for SaaS companies doing over $10M in revenue and is used for valuation (typically 5-15x ARR for SaaS).
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