CAC is what it costs to win one customer. Enter total sales & marketing spend and customers acquired in the same period to get CAC, plus payback if you add ARPU and margin.
Runs entirely in your browser — nothing you enter is uploaded or stored.
Customer acquisition cost (CAC) is total sales and marketing spend divided by the customers that spend won, in the same period. Add ARPU and gross margin and this calculator also returns CAC payback — the months of margin needed to earn the acquisition cost back, the metric that really governs cash-efficient growth.