Know what one customer is really worth before you buy ads. Customer Lifetime Value Calculator is a practical single-file tool you own outright — no subscription, no login.
• True margin-based CLV — lifetime value calculated on profit you keep, not revenue you touch
• Churn-adjusted lifespan — your churn rate refines how long a customer really stays
• LTV:CAC ratio with a plain verdict — healthy, tight or losing money, in one line
• Maximum safe CAC shown — the most you can pay per customer and stay at a healthy 3:1
• CAC payback period in months — how long until one customer has paid back their acquisition cost
• Works for stores, SaaS and services — order value, frequency, margin and lifespan cover any model
Most sellers guess how much they can spend to win a customer — then wonder why profitable-looking ads lose money. Enter your average order value, order frequency, gross margin, customer lifespan, churn and acquisition cost, and this calculator returns the numbers that decide your marketing: churn-adjusted lifetime value, your LTV:CAC ratio with a plain-English verdict, the maximum CAC you can afford at a healthy 3:1, and how many months one customer takes to pay back their acquisition cost.
WHAT IT DOES
• True margin-based CLV — lifetime value calculated on profit you keep, not revenue you touch
• Churn-adjusted lifespan — your churn rate refines how long a customer really stays
• LTV:CAC ratio with a plain verdict — healthy, tight or losing money, in one line
• Maximum safe CAC shown — the most you can pay per customer and stay at a healthy 3:1
• CAC payback period in months — how long until one customer has paid back their acquisition cost
• Works for stores, SaaS and services — order value, frequency, margin and lifespan cover any model
HOW TO USE
1. After checkout, download the ZIP and unzip it.
2. Double-click customer-lifetime-value-calculator.html — it opens in any modern browser, no install, no signup.
3. Enter your details, use the tool, and copy / save / export your results.
WHO IT’S FOR
Digital nomads, online sellers, freelancers, creators and solo business owners who want a practical tool they own outright — no subscription, no login, no data leaving their machine.
WHAT YOU GET
• customer-lifetime-value-calculator.html — the complete tool in the downloadable ZIP (works offline, yours forever)
• Free lifetime updates to the file
• Instant download after checkout
