Compare calculators

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

Rule of 40 Calculator

Check whether a SaaS company's growth rate plus profit margin clears the 40% benchmark that signals a healthy balance of growth and profitability.

Revenue Growth Rate (%)

Profit Margin (%)

Business

Customer Lifetime Value Calculator

Estimate the total profit a customer generates over their entire relationship with your business. The key number for deciding how much you can afford to spend acquiring customers.

Average Monthly Revenue per Customer ($)

Customer Lifespan (months)

Profit Margin (%)

Key differences

	Rule of 40 Calculator	Customer Lifetime Value Calculator
Category	Business	Business
Inputs required	2	3
Result	Rule of 40 Score (%)	Customer Lifetime Value ($)
What it does	Check whether a SaaS company's growth rate plus profit margin clears the 40% benchmark that signals a healthy balance of growth and profitability.	Estimate the total profit a customer generates over their entire relationship with your business. The key number for deciding how much you can afford to spend acquiring customers.