SaaS Metrics Calculator
Enter spend, customers, pricing and churn once and get CAC, LTV and the LTV to CAC ratio together.
Your unit economics
What it measures
This combines the two halves of SaaS unit economics: what a customer costs to win, what they are worth over their life, and the ratio between the two. Percentages go in as whole numbers, so 2.5 means 2.5 percent.
Why it matters
The ratio is the decision number. Below 1:1 you lose money on every win; at 3:1 and above the engine can take more fuel.
A worked example
2,000 CAC against 6,400 LTV is a 3.2:1 ratio: healthy, with room to spend more aggressively on growth.
How to read and improve it
Move the ratio from both ends: cheaper acquisition through conversion work, higher LTV through churn and expansion work.
Frequently asked questions
What ratio should I aim for?
3:1 is the standard healthy mark. Far above 5:1 can mean you are underinvesting in growth.
Which number should I fix first?
Usually churn. It improves LTV and often signals product problems that also depress conversion.
More in SaaS metrics: SaaS CAC Calculator · Customer Lifetime Value Calculator · Churn Rate Calculator
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