Projects customer lifetime value as average order value × yearly purchase frequency × lifespan in years, with total orders and annual value shown. SaaS founders and e-commerce operators use LTV to determine acquisition budgets and forecast revenue. Numbers never leave your device — every calculation runs locally in your browser.
Compute customer lifetime value from ARPU and churn — know what buyers are worth. Justify $500 CAC with $2,000 LTV — free, local, no signup.
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LTV = average order value × purchase frequency per year × lifespan in years — no margin input. Example: $85 × 4 orders/year × 5 years = $1,700 LTV. Four presets ship with the tool (SaaS Monthly, E-commerce, Subscription Box, Luxury Retail) and runs save to a 10-entry history with CSV export.
3:1 or higher — $800 LTV supports up to ~$267 CAC. Below 3:1 you're overpaying for growth; above 5:1 you're likely under-spending and growing slower than you could.
Average hides everything: enterprise cohorts often show 5× the LTV of self-serve. Segment by plan, channel, and signup month before setting budgets — one blended number misprices every channel.
Lifetime ≈ 1 ÷ monthly churn rate: 5% monthly churn implies ~20 months average life. Cut churn from 5% to 3% and the same $50×80% base jumps from $800 to ~$1,333 LTV.
Use gross margin (revenue minus cost of delivery), not revenue. A $50 plan at 80% margin contributes $40/month, not $50 — forgetting margin overstates LTV by 25% here.
Last updated October 2026