Customer Lifetime Value (CLV) Calculator

CLV, LTV, and the CLV:CAC Ratio

Customer Lifetime Value (CLV) and Lifetime Value (LTV) refer to the same metric — the total revenue (or profit) expected from a customer over their relationship with your business. The CLV:CAC ratio (lifetime value to customer acquisition cost) is the single most important unit economics metric for any subscription or repeat-purchase business. A ratio of 3:1 is the common minimum benchmark for a healthy SaaS business — meaning you recover your acquisition cost 3× over the customer lifetime. Below 1:1 means you lose money on every customer; above 5:1 often indicates underinvestment in acquisition and growth left on the table.

Historical vs Predictive CLV

Historical CLV calculates the actual revenue from past customers over their lifetime with you — useful for understanding what CLV has been. Predictive CLV uses current retention rates and average revenue to forecast what future customers will be worth. The calculator above uses predictive CLV based on your inputs. The key input sensitivity is the churn rate — CLV = ARPU ÷ monthly churn rate (simplified). At 2% monthly churn, CLV is 50× ARPU; at 5%, it's 20× ARPU. This relationship makes reducing churn more valuable than increasing price in most early-stage subscription businesses.

Segmenting Customers by CLV

Not all customers are equally valuable. Calculating CLV by segment (acquisition channel, company size, industry, plan tier, geographic region) reveals which customer types should receive the most acquisition investment. If customers acquired through content marketing have 2× the CLV of those acquired through paid search, that's a strategic signal to shift budget — or to understand why the difference exists. High-CLV segments often have lower initial conversion rates because the more selective buyers who do convert stay longer and spend more. Optimising solely for acquisition volume without CLV context leads to building a customer base that looks large but has poor unit economics.

How to Increase CLV

CLV is a function of three levers: average revenue per customer, purchase frequency or expansion rate, and retention (lifespan). The fastest path to CLV improvement for most businesses is reducing churn — see the churn rate calculator for specific strategies. The next lever is expansion revenue: seat additions, tier upgrades, cross-sells, and professional services all increase ARPU from existing customers at lower cost than new customer acquisition. Finally, winning back churned customers at a known, lower CAC (they already understand your product) is an underused CLV strategy — re-acquisition rates of 10–15% are achievable with targeted campaigns.