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Customer Acquisition Cost Calculator

Calculate your customer acquisition cost by comparing total sales and marketing spend with the number of new customers gained.

Your Details

Overview

This customer acquisition cost calculator helps you estimate how much you spend to win each new customer. Enter your marketing spend, sales spend, other acquisition costs, and the number of new customers for the same period to see your average CAC.

How it works

The calculator adds together your marketing, sales, and other acquisition costs to find total acquisition spend. It then divides that total by the number of new customers acquired during the same period. The result is your average customer acquisition cost, which can help you compare efficiency across time periods or campaigns.

How to use this calculator

  1. 1Enter your total marketing spend for the period.
  2. 2Add your total sales-related acquisition costs.
  3. 3Include any other direct acquisition costs.
  4. 4Enter the number of new customers acquired in the same period.
  5. 5Choose the reporting period and review your CAC results.

Example Calculation

Marketing Spend

$5,000

Sales Spend

$3,000

Other Acquisition Costs

$500

New Customers Acquired

50

Reporting Period

monthly

Customer Acquisition Cost

$170.00

If you spend $8,500 in total and acquire 50 new customers in a month, your customer acquisition cost is $170 per customer.

Frequently asked questions

What does this customer acquisition cost calculator estimate?

It estimates the average amount you spend to acquire one new customer based on your total acquisition-related costs and new customer count.

What costs should be included in CAC?

CAC usually includes marketing spend, sales costs, agency fees, software tied to acquisition, and other direct costs used to win new customers.

Should I include existing customer costs?

Usually no. CAC is typically focused on acquiring new customers, not retaining or servicing existing ones.

Why is my CAC different across channels?

Different channels often have different conversion rates, costs, and customer quality, so channel-level CAC can vary a lot from your overall average.

How can I reduce customer acquisition cost?

You may lower CAC by improving conversion rates, refining targeting, reducing wasted spend, shortening the sales process, or increasing efficiency in high-performing channels.

Is a lower CAC always better?

Not always. A higher CAC may still be worthwhile if the customers acquired generate more revenue or stay longer.

Explore Related Calculators

Customer Lifetime Value CalculatorEstimate how much revenue a typical customer may generate over the course of their relationship with your business.Calculate →LTV to CAC Ratio CalculatorEstimate your LTV to CAC ratio using average revenue, gross margin, customer lifespan, and acquisition cost.Calculate →Customer Churn Rate CalculatorCalculate your customer churn rate and estimate how many customers you lost over a given period.Calculate →Customer Retention Rate CalculatorCalculate your customer retention rate over a period using your starting customers, ending customers, and new customers gained.Calculate →

Assumptions and warnings

Assumptions

  • All costs and new customer numbers refer to the same reporting period.
  • Only costs directly related to acquiring new customers are included.
  • Existing customer retention, support, and product delivery costs are excluded unless added manually.
  • Results are averages and may vary by channel, campaign, or customer segment.

Warnings

  • This calculator provides an estimate only and should be used alongside your own business reporting.
  • Be consistent about which costs and customers you include to avoid misleading results.