CAC to LTV Ratio Calculator: Prove Your Growth Math Works
Enter your acquisition cost and customer lifetime value, and see your LTV to CAC ratio in seconds, with a clear read on whether growth pays.
Free with a Brainito account. No credit card required.
One Number, Clear Verdict
Turn two messy metrics into a single ratio that tells you whether your unit economics actually work.
Spot Unprofitable Growth
A ratio under three flags trouble early, before you scale spend on customers who never pay you back.
Model Better Scenarios
Test how pricing changes, retention gains, or cheaper channels move your ratio before you commit.
Frequently Asked Questions
What is a good LTV to CAC ratio?
Most investors and operators look for a ratio of 3:1 or higher, meaning each customer returns at least three times what they cost to acquire. Below 1:1 you lose money on every customer, and above 5:1 you may be underinvesting in growth.
What inputs does the CAC:LTV Ratio Calculator need?
Just two numbers: your average customer acquisition cost and your average customer lifetime value. If you do not know them yet, Brainito's CAC and LTV calculators can help you work each one out first.
Is the CAC:LTV Ratio Calculator free?
Yes, it is free after creating a Brainito account. Run it as often as you like in 2026 as your pricing, retention, and acquisition costs shift, and keep a record of how the ratio trends.
See in seconds whether each customer is worth what you pay to win them
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