Customer Acquisition Cost (CAC) Calculator – Calculate Your Cost Per Customer | tolkit.me

The Customer Acquisition Cost (CAC) Calculator on tolkit.me shows you exactly how much it costs to acquire a customer over a specific period or campaign.

You simply enter:

• Total Marketing Cost
• Number of Acquired Customers

The tool then calculates your CAC = Total Cost ÷ Customers and displays it in a clean, single-result layout. A light-style info box gives you a static comparison with simple “industry-style” benchmarks to help you interpret if your CAC looks high, average or efficient.

The UI is intentionally minimal: two fields, one result, plus an information box for context.

CAC is one of the most important metrics in marketing and growth. It tells you how much you pay, on average, to turn a prospect into a paying customer. If your CAC is too high compared to your revenue or customer lifetime value (LTV), your business model can become unsustainable.

Tracking CAC helps you:

• ✔️ Understand if your marketing spend is efficient
• ✔️ Compare different channels, campaigns or time periods
• ✔️ Align CAC with LTV to ensure profitability
• ✔️ Set realistic targets for paid acquisition
• ✔️ Communicate performance clearly to founders, investors or clients

The CAC Calculator is designed to be as simple as possible: two inputs and one clear result. It works for any time frame — weeks, months, quarters or full campaigns — as long as your numbers match the same period.

• 1
  Enter your Total Marketing Cost:
  Add up all marketing and sales expenses for the period you’re analyzing. This can include: ad spend, tools, agency fees, salaries (if you choose to include them) and any other acquisition-related costs.
• 2
  Enter the Number of Acquired Customers:
  Count how many new paying customers you acquired in the same period. This should match the timeframe used for your total cost.
• 3
  Read your CAC result:
  The calculator instantly computes your:
  • CAC = Total Marketing Cost ÷ Number of Customers It then shows the result in a single, prominent line, with a light-style info box underneath so you can quickly interpret what that number means.

The Customer Acquisition Cost (CAC) formula is straightforward and runs entirely in your browser using JavaScript — no backend and no data storage required.

The formula used in this calculator is:

• CAC = Total Marketing Cost ÷ Number of Acquired Customers

For example, if you spent 5,000 on marketing in a month and acquired 100 new customers, your CAC would be 50 per customer.

You can use this calculator for paid ads, overall marketing, or specific channels (Meta, Google, TikTok, email, etc.) by plugging in channel-specific spend and customer numbers to compare CAC across channels.