Trial-to-Paying Funnel Calculator
Model your acquisition funnel end to end: turn traffic into trials into paying customers, then see the new MRR, blended CAC and CAC payback that funnel produces. The cascade most funnel tools skip.
Your funnel
How the funnel math works
Each stage multiplies the last: visitors × visitor→trial % = trials, trials × trial→paid % = new paying customers. Multiply paying customers by ARPA for new MRR. Divide your monthly acquisition spend by new customers for blended CAC, and divide CAC by monthly gross profit (ARPA × gross margin) for the CAC payback period — best-in-class is under 12 months. A healthy funnel isn't just one that converts; it's one that produces customers who pay back their acquisition cost quickly.
Trial-to-paid rates vary a lot by trial type: opt-in (no credit card) trials convert around 9% on average, while credit-card-required trials convert around 31% (ChartMogul 2026). Model your own channels separately — a blended average hides which ones actually pay back.
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