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Customer Lifetime Value Calculator

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Find how much a typical customer is worth over their entire relationship with your business - a key number for deciding how much you can afford to spend acquiring one.

Customer Lifetime Value Calculator

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Customer lifetime value
$720.00
Annual value per customer
$240.00
Add a gross margin percentage for a profit-based CLV instead of a revenue-based one.

The formula

CLV (revenue-based) = Average purchase value x Purchase frequency (per year) x Customer lifespan (years) CLV (profit-based) = Revenue-based CLV x Gross margin %
Example

A customer spending $60 per purchase, 4 times a year, over a 3-year average relationship: CLV = 60 x 4 x 3 = $720 in total revenue over their lifetime.

Step-by-step guide

  1. Enter the average purchase value - total revenue divided by number of transactions, for a typical order.
  2. Enter how often a typical customer purchases per year.
  3. Enter your average customer lifespan - how many years a customer typically keeps buying before churning.
  4. Optionally add gross margin to see CLV in terms of actual profit rather than revenue.

Why CLV matters for marketing decisions

Customer lifetime value directly answers a critical question: how much can you afford to spend acquiring a new customer while still being profitable? A business that knows its CLV is $720 can confidently spend up to that amount (usually well under it, to leave a healthy margin) on marketing and sales to win a new customer, since the relationship is expected to pay that back over time. Without knowing CLV, acquisition spending decisions are essentially a guess.

Common mistakes

Comparing revenue-based CLV directly against customer acquisition cost - acquisition cost should really be compared against profit-based CLV (using gross margin), or the comparison overstates how much you can actually afford to spend.
Using a single blanket CLV across very different customer segments - a business with both high-value and low-value customer groups gets a more useful, actionable number by calculating CLV separately for each segment.

Frequently asked questions

How do I estimate average customer lifespan if I don't track it directly?

A common shortcut is 1 divided by your annual churn rate - if 25% of customers leave each year, average lifespan is roughly 1/0.25 = 4 years. This is an approximation, but a reasonable starting point without detailed cohort data.

What's a healthy relationship between CLV and customer acquisition cost?

A commonly cited (though not universal) guideline is aiming for a CLV to acquisition cost ratio of at least 3:1, giving enough margin to cover other operating costs beyond just marketing spend.

Should I use revenue-based or profit-based CLV?

Profit-based CLV (using the margin field) gives a more accurate picture for spending decisions, since it reflects what a customer actually contributes to the bottom line, not just top-line revenue.

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