Quick answer
How do you calculate LTV to CAC Ratio?
Use LTV:CAC ratio = Customer lifetime value ÷ Customer acquisition cost. Enter the matching values above to calculate the result instantly.
What it measures
Understanding LTV to CAC Ratio
Compare customer lifetime value with customer acquisition cost. CalcPilot applies the formula LTV:CAC ratio = Customer lifetime value ÷ Customer acquisition cost to the values you enter and updates the result in your browser. Using revenue LTV with fully loaded CAC overstates economics; the numerator and denominator should reflect compatible cost scopes. Before comparing results, define each input consistently: use the same reporting period, currency, customer definition, and accounting scope. Small definition changes can move the answer more than the arithmetic itself. A 3.00× ratio means estimated lifetime value is three times the acquisition cost. Treat the result as a decision aid rather than a guarantee. Run a base case, a conservative case, and an ambitious case to see which assumption has the greatest effect. Pair this metric with the adjacent measures linked below so an apparently strong number does not hide weak cash flow, margin, retention, or execution quality. Review the ratio with CAC payback, retention, cohort maturity, and the cash required to finance growth. The most useful analysis records the source and date of every input, then repeats the calculation on a regular schedule. LTV depends on uncertain long-term retention and margin assumptions, so early-stage ratios can appear more precise than they are.
The math
LTV to CAC Ratio formula
Worked example
Example calculation
- Calculation
- $3,600 ÷ $1,200
- Result
- 3.00× LTV:CAC
Step by step
How to use this calculator
- 1Enter customer lifetime value, customer acquisition cost.
- 2Keep every input on the same time period and measurement basis.
- 3Review the result, then change one assumption at a time to test scenarios.
Decision support
When this calculator is useful
- Unit-economics reviews
- Channel allocation
- Fundraising metrics
Common questions
Frequently asked questions
What does the LTV to CAC Ratio result mean?
A 3.00× ratio means estimated lifetime value is three times the acquisition cost.
Which inputs should I use for LTV to CAC Ratio?
Use customer lifetime value, customer acquisition cost, measured from the same source and period. Include only values that match the definitions shown beside each field.
How should I use this LTV to CAC Ratio calculation?
Review the ratio with CAC payback, retention, cohort maturity, and the cash required to finance growth.
What are the limitations of the LTV to CAC Ratio formula?
LTV depends on uncertain long-term retention and margin assumptions, so early-stage ratios can appear more precise than they are.
Calculation reviewed: 2026-06-18. CalcPilot uses the formula shown above and tests representative values during the production build. See our methodology and correction policy.
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