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

Cash Runway Calculator

Calculate how many months a startup can operate before it runs out of cash at its current burn rate. Essential for fundraising timing and budgeting decisions.

Cash on Hand ($)

Net Monthly Burn ($)

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

	Cash Runway Calculator	Rule of 40 Calculator
Category	Business	Business
Inputs required	2	2
Result	Cash Runway (months)	Rule of 40 Score (%)
What it does	Calculate how many months a startup can operate before it runs out of cash at its current burn rate. Essential for fundraising timing and budgeting decisions.	Check whether a SaaS company's growth rate plus profit margin clears the 40% benchmark that signals a healthy balance of growth and profitability.