Find out what a new customer really costs. Enter your marketing spend, the customers it brought in, and your average first order — and see your CAC and whether that first sale even covers it.
CAC here is spend ÷ new customers. Whether it's 'good' depends on how much a customer is worth over time (LTV), not just the first order — see the LTV calculator.
Customer acquisition cost is what you pay, in marketing and sales, to win one customer. It only makes sense next to what a customer is worth over their lifetime — a high CAC is fine if customers stay and spend, and a low CAC is bad if they buy once and leave.
Divide your total sales and marketing spend for a period by the number of new customers it produced. This calculator does that and compares it to a first order.
A common healthy target is a lifetime value at least 3× your CAC. Pair this with the LTV calculator to check the ratio.
Related: LTV calculator · conversion rate calculator · all calculators.
More free marketing & ads tools — no signup, works on any device.
Yes. The Customer Acquisition Cost Calculator is completely free, runs in your browser, and never asks for a signup, email, or download. Enter your numbers and the result updates instantly.
It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
Yes. The calculator is mobile-friendly and works on any phone, tablet, or computer — there is no app to install and nothing to save.
Yes. Scroll to “Add this free calculator to your site” above and copy the embed snippet to place the live calculator on your blog or website for free.
Last reviewed: September 2026. Free to use, no signup — Customer Acquisition Cost Calculator by ToolWise Digital.
Copy the snippet to embed the live calculator on your blog or website — free for any site. The small “Calculator by ToolWise Digital” credit line keeps it free; you're welcome to remove it, but we appreciate you leaving it.
Ready-made Google Sheets & Excel trackers for money, taxes, and small business — each with a free phone version.
Browse the shop →Subscribe and we'll email you our Simple Monthly Budget (Google Sheets & Excel, plus a phone version) — free. Then the occasional short note on pricing, bookkeeping, and the money side of a small business. No spam — unsubscribe anytime.