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Customer Acquisition Cost Calculator

Work out CAC from spend and new customers, with profit per customer.

Marketing Tools Reviews Free · no sign-up

Spend over the same period the customers were acquired in — usually a month or a quarter.

Cost per acquisition

—

Profit per customer, first order—
CAC as % of first-order revenue—

Quick Tool Overview

The Customer Acquisition Cost Calculator turns total spend and new customers into a CAC figure instantly, with optional profit-per-customer and CAC-as-a-share-of-order-value figures.

What it does
Calculates cost per new customer acquired
You give it
Total spend, new customers, and optionally order value and margin
You get back
CAC, plus profit per customer when margin is given
Best for
Checking whether a growth channel is actually profitable
Marketing Tools Free, unlimited use No sign-up Runs in your browser

About the Customer Acquisition Cost Calculator

CAC is the number that decides whether growth is actually profitable: spend more to acquire a customer than that customer is worth, and every new sale makes the business poorer, not richer.

Enter total sales and marketing spend over a period and the number of new customers it brought in, and get the CAC straight away. Add an average order value and gross margin and it also shows profit on that first order and CAC as a share of order value — enough to spot a channel that looks good on volume but loses money.

Key features of the Customer Acquisition Cost Calculator

Instant results

CAC updates live as spend or customer count changes.

Optional profit view

Add order value and margin to see profit on the first order.

Formula shown

Every step of the calculation is written out underneath the result.

Runs in your browser

No sign-up, no data sent anywhere.

How to use the Customer Acquisition Cost Calculator

  1. 1

    Enter total spend

    Sales and marketing spend for the period being measured.

  2. 2

    Enter new customers

    How many new customers that spend brought in over the same period.

  3. 3

    Add order value and margin

    Optional, but it turns CAC into a real profit-per-customer figure.

  4. 4

    Read the CAC

    Updates instantly, with the formula and any profit figures shown below.

Frequently asked questions

CAC = Total sales and marketing spend ÷ Number of new customers acquired, over the same period.

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