How to measure Customer Lifetime Value
The total gross profit a single customer is expected to generate over their entire relationship with you.
9 tools compared — formula: ARPU × Gross Margin ÷ Customer Churn Rate
How to measure Customer Acquisition Cost
The fully-loaded cost of acquiring one paying customer in a given period.
3 tools compared — formula: Total Sales & Marketing Spend ÷ New Customers Acquired
How to measure Monthly Recurring Revenue
The normalized monthly value of every active subscription, regardless of billing period.
11 tools compared — formula: Sum of all active monthly-equivalent subscription revenue
How to measure Customer Churn Rate
The percentage of customers who cancel in a given period. Counts logos, not dollars.
13 tools compared — formula: Customers Lost ÷ Customers at Start of Period × 100
How to measure Net Revenue Retention
How much revenue a cohort of existing customers generates compared to where they started — including expansion, contraction, and churn.
8 tools compared — formula: (Starting MRR + Expansion − Contraction − Churned MRR) ÷ Starting MRR × 100
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The Saasly Calculator runs the math on manual input — no integration required. Pair with the benchmark library to see where your numbers sit relative to your industry.