SaaS Retention Metrics
CAC, LTV, churn, retention and customer health — 14 free calculators, all run in your browser.
CAC by Channel
Break down Customer Acquisition Cost by marketing channel to find which channels are most efficient and where to shift budget.
CAC Calculator NEW
Calculate blended Customer Acquisition Cost from ad spend, sales payroll, and tools — plus CAC payback period, and your LTV:CAC ratio if you already know your LTV.
CAC Payback NEW
Calculate how many months it takes to recover your customer acquisition cost. One of the key unit economics metrics VCs check before investing.
Churn Impact
See exactly how monthly churn erodes your MRR over 12 months and what reducing churn by 1% is worth.
Churn Revenue Loss NEW
Forecast monthly and annual revenue lost to churn — and the MRR needed to break even.
Cohort Churn
Analyze cohort retention, calculate LTV from churn rate, and project how many customers remain after any number of months.
Concentration Risk NEW
Calculate customer concentration risk — % revenue from top customers, Herfindahl-Hirschman Index (HHI), and single-customer exposure — a key due diligence metric.
GRR Calculator NEW
Calculate Gross Revenue Retention (GRR) from starting MRR, churn, and contraction — excluding expansion to isolate pure retention.
Health Score NEW
Score your SaaS customers by usage, engagement, and NPS to predict churn risk and identify expansion opportunities.
LTV & CAC
The fastest way to get your LTV:CAC ratio — enter ARPU, margin, churn, and spend once and get both LTV and CAC together, without filling in two separate calculators.
LTV Calculator NEW
Calculate Customer Lifetime Value (LTV), LTV:CAC ratio, and CAC payback period from your ARPU, gross margin, and monthly churn rate.
NPS Score
Calculate your Net Promoter Score from promoter, passive, and detractor counts — with benchmark context.
NRR Calculator NEW
Calculate Net Revenue Retention and Gross Revenue Retention from starting MRR, expansion, contraction, and churn — the core SaaS retention health metric.
Retention Rate NEW
Calculate customer retention rate, churn rate, and implied LTV from your period start, end, and new customer counts.