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
How to measure CAC Payback Period
The number of months of gross profit from a customer required to recover the cost of acquiring them.
2 tools compared — formula: CAC ÷ (ARPU × Gross Margin)
How to measure SaaS Quick Ratio
The ratio of revenue gained (new + expansion) to revenue lost (churn + contraction) in a period.
6 tools compared — formula: (New MRR + Expansion MRR) ÷ (Churned MRR + Contraction MRR)
How to measure Magic Number
Annualized net-new ARR generated for each dollar of the prior quarter's sales & marketing spend.
1 tools compared — formula: (Net New ARR × 4) ÷ Prior-Quarter S&M Spend
How to measure Gross Margin
The percentage of revenue left after the direct cost of delivering the service (hosting, support, payment fees, third-party APIs).
2 tools compared — formula: (Revenue − COGS) ÷ Revenue × 100
How to measure Trial-to-Paid Conversion
The percentage of users who start a trial and become paying customers.
6 tools compared — formula: Paid Conversions ÷ Trials Started × 100
How to measure Net Promoter Score
A survey-based score from the 0–10 'how likely are you to recommend us?' question, taking promoters (9–10) minus detractors (0–6).
3 tools compared — formula: % Promoters − % Detractors
How to measure DAU/MAU Ratio
The share of monthly active users who use the product on a given day — the standard 'stickiness' measure.
3 tools compared — formula: DAU ÷ MAU × 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.