Customer Acquisition Cost Calculator

What is the Customer Acquisition Cost Calculator?

Calculate customer acquisition cost (CAC) from marketing and sales spend. CAC reveals what it really costs to win a paying customer once both marketing and sales effort are counted.

How to use the Customer Acquisition Cost Calculator

1. Enter your marketing spend, your sales spend, your new customers.
2. Results update automatically as you type; you can also press Calculate.
3. Read the output: cac, total acquisition spend.
4. Use the 📊 chart to see the result visually, then copy or share it.

Formula and method

Worked example

With marketing spend = $8,000, sales spend = $4,000, new customers = 60, the Customer Acquisition Cost Calculator returns cac: $200.00; total acquisition spend: $12,000.00.

Where the Customer Acquisition Cost Calculator helps in real life

Your startup spent $8,000 on ads and $12,000 on a part-time salesperson last quarter and gained 100 customers. A $200 CAC tells you how much each customer must be worth before growth is profitable.

You are comparing channels. Splitting spend and new customers by channel shows whether paid social or a referral program is bringing in customers more cheaply.

Common mistakes to avoid

• Counting only ad spend and leaving out salaries, tools and agency fees.
• Dividing by sign-ups instead of paying customers.
• Mixing time periods when spend lands in one month and customers in the next.
• Comparing CAC to revenue instead of to customer lifetime value.

💡 Practical tip: Use the customer lifetime value calculator next to see whether your CAC leaves room for profit.

Tips for better results

• Calculate CAC per channel as well as overall.
• Track the payback period: how many months of margin it takes to recover CAC.
• Aim for lifetime value at least three times CAC as a rough health check.

⚠️ Revenue estimates depend on your traffic quality, niche and ad network policies; actual earnings will differ.

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