Business & Self-Employed · United States
CAC and ROAS Calculator
Updated on 22 Oct 2026 · Checked by Aotob
Each new customer costs $50 to win.
Ads return 3× in revenue, 1.8× in gross profit.
Cost to get a customer
$50
ROAS (revenue ÷ ad spend)3×
Gross profit ÷ ad spend1.8×
Break-even ROAS1.67×
Months to earn back the CAC3.3
At a 60% margin you need a ROAS above 1.67× to profit on the first sale; you are at 3×.
Show the working
CAC = 10,000 ÷ 200 = 50.00
ROAS = 30,000 ÷ 10,000 = 3
ROAS needed by margin
| Gross margin | Break-even ROAS |
|---|---|
| 20% | 5× |
| 30% | 3.33× |
| 40% | 2.5× |
| 50% | 2× |
| 60% | 1.67× |
| 70% | 1.43× |
| 80% | 1.25× |
Questions people ask
What is CAC?
Customer acquisition cost: marketing and sales spend ÷ new customers won in the same period.
What is ROAS?
Return on ad spend: revenue from ads ÷ ad spend. A ROAS of 3× means $3 back for each $1 spent.
What is break-even ROAS?
1 ÷ gross margin. At a 40% margin you need 2.5× just to cover the cost of the goods and the ads.
Updated 22 Oct 2026Source: Standard business accounting formulasChecked by AotobUses the figures you enter; attribution varies by platform.Report an issue