Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Customer Acquisition Cost (CAC) Calculator

Calculate how much it costs to acquire one new customer by dividing total sales and marketing spend by new customers gained. The denominator of the all-important CLV:CAC ratio.

Total Marketing Spend ($)

Sales Expenses ($)

New Customers Acquired (customers)

Fill in the required fields to see your result.

Ecommerce

Customer Churn Rate Calculator

Measure the percentage of customers who stopped using your service during a period. Essential for subscription businesses monitoring retention health and forecasting future revenue.

Customers Lost

Total Customers (Start)

Fill in the required fields to see your result.

Key differences

	Customer Acquisition Cost (CAC) Calculator	Customer Churn Rate Calculator
Category	Business	Ecommerce
Inputs required	3	2
Result	Customer Acquisition Cost ($)	Churn Rate (%)
What it does	Calculate how much it costs to acquire one new customer by dividing total sales and marketing spend by new customers gained. The denominator of the all-important CLV:CAC ratio.	Measure the percentage of customers who stopped using your service during a period. Essential for subscription businesses monitoring retention health and forecasting future revenue.