Calculators
Free CAC Calculator – Free & Unlimited
CAC Calculator — find your true cost per acquired customer, free and unlimited.
Enter your total sales and marketing spend and the number of new customers it brought in, and see your Customer Acquisition Cost (CAC) instantly.
Enter your total sales and marketing spend and the number of new customers it brought in, and see your Customer Acquisition Cost (CAC) instantly. Include every dollar spent acquiring customers — salaries and tools, not just ad spend — for a number you can actually act on.
Use the CAC Calculator online at no cost.Common tasks this tool helps with
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Try CAC Calculator free
The CAC formula
CAC = Total Sales & Marketing Spend ÷ New Customers Acquired
Include every dollar spent acquiring customers in that period, not just ad spend, for an accurate figure.
Example
You spent $10,000 and acquired 50 new customers.
$10,000 ÷ 50 = $200 CAC
Why it's free
This is pure math — ROI, ROAS, CAC, LTV and the rest are formulas, not AI generations. There was never a real cost to charge for here, so it runs instantly in your browser with zero credits. With the CAC Calculator, you get this without paying per generation or hitting a credit wall.
What you get
- CAC: total sales and marketing spend ÷ new customers, updated as you type
Who uses the CAC Calculator
- SaaS and ecommerce founders working out what a new customer costs
- Growth teams checking CAC against customer lifetime value
- Investors and advisors reviewing unit economics
How it works
- Enter your Total sales+marketing ($) and New customers
- See your $ CAC instantly, no submit button needed
- Use the number in your reporting or planning
Frequently asked questions
Is the CAC Calculator free?
Yes. Every one of GrowthGadgetAi's 100+ Marketing Toolkit tools, including the CAC Calculator, is completely free with unlimited use — no credits, no plan requirement and no credit card.
Do I need to create an account to use it?
You need a free GrowthGadgetAi account so your output and history are saved, but signing up costs nothing and never requires a card.
How is the CAC Calculator's result calculated?
It's a direct formula, not an AI guess — the CAC Calculator computes your $ CAC from the numbers you enter, instantly and the same way every time.
Is my CAC too high?
Compare it against your LTV, not a generic benchmark — a common rule of thumb is aiming for an LTV:CAC ratio of at least 3:1. Use the LTV Calculator alongside this one to check your own ratio.
How do I use the CAC Calculator?
1) Enter your Total sales+marketing ($) and New customers. 2) See your $ CAC instantly, no submit button needed. 3) Use the number in your reporting or planning. The whole process takes about a minute and runs on this page, on desktop or mobile.
What is the formula behind the CAC Calculator?
CAC = Total Sales & Marketing Spend ÷ New Customers Acquired. Include every dollar spent acquiring customers in that period, not just ad spend, for an accurate figure.
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