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

LTV:CAC Ratio Calculator

Calculate the ratio of customer lifetime value to customer acquisition cost — the key test of whether your growth is economically sustainable. A 3:1 ratio is the classic benchmark.

Customer Lifetime Value (LTV) ($)

Customer Acquisition Cost (CAC) ($)

Business

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 (%)

Key differences

	LTV:CAC Ratio Calculator	Rule of 40 Calculator
Category	Business	Business
Inputs required	2	2
Result	LTV:CAC Ratio	Rule of 40 Score (%)
What it does	Calculate the ratio of customer lifetime value to customer acquisition cost — the key test of whether your growth is economically sustainable. A 3:1 ratio is the classic benchmark.	Check whether a SaaS company's growth rate plus profit margin clears the 40% benchmark that signals a healthy balance of growth and profitability.