LTV:CAC Ratio Calculator
The LTV:CAC Ratio Calculator measures the relationship between Customer Lifetime Value and Customer Acquisition Cost. This ratio is one of the most important metrics for assessing whether a business model is sustainable and scalable.
How to Use the LTV:CAC Ratio Calculator
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Mathematical Formula & Logic
Step-by-Step Worked Calculation
Scenario: Calculating LTV:CAC for a SaaS business
A SaaS has an LTV of $1,500 and a CAC of $500.
Step 1: LTV = $1,500, CAC = $500.
Step 2: LTV:CAC Ratio = $1,500 / $500.
Step 3: LTV:CAC Ratio = 3.0.
Step 4: For every $1 spent on acquisition, the business earns $3 in lifetime value.
How to Use the LTV:CAC Ratio Calculator
- 1. Enter your Customer Lifetime Value (LTV).
- 2. Input your Customer Acquisition Cost (CAC).
- 3. The calculator computes your LTV:CAC ratio.
- 4. Use results to assess business sustainability.
What Is a LTV:CAC Ratio Calculator?
The LTV:CAC ratio compares Customer Lifetime Value to Customer Acquisition Cost. It measures the return on investment for acquiring each customer and indicates whether the business model is sustainable.
Why This Calculation Matters
This ratio determines whether your business can scale profitably. Ratios above 3:1 indicate healthy unit economics, while ratios below 1:1 indicate unsustainable customer acquisition.
Common Mistakes to Avoid
- Using different time periods for LTV and CAC calculations
- Not accounting for gross margin in LTV calculations
- Ignoring cohort-based analysis
- Comparing ratios across different business models
Frequently Asked Questions
Complete indexable directory of answers (6 questions)
What is a good LTV:CAC ratio?
A good LTV:CAC ratio is 3:1 or higher. This means you earn $3 for every $1 spent on customer acquisition. Ratios below 1:1 indicate you are losing money on each customer.
How can I improve my LTV:CAC ratio?
Improve customer retention to increase LTV, optimize marketing to reduce CAC, upsell and cross-sell to existing customers, and improve product-market fit.
What is the payback period?
The payback period is how long it takes to recover your CAC. Ideally, CAC payback should be under 12 months for healthy unit economics.
How does the LTV:CAC Ratio Calculator calculate its results?
The LTV:CAC Ratio Calculator uses verified mathematical formulas processed entirely in your browser. Calculator inputs and results are never sent to external servers. We do use Google Analytics and AdSense for standard website operation — see our Privacy Policy for details.
Is my data safe when using this LTV:CAC Ratio Calculator?
Yes. All calculations happen locally in your browser. We never store, transmit, or log any input data you enter into the calculator.
What should I do if I get an unexpected result?
Double-check that all inputs are valid numbers within reasonable ranges. If you believe there is an error, please contact us with your input values and we will investigate.