Startup Runway Calculator — Free Burn Rate & Cash Runway
Calculate your burn rate, cash runway in months, and zero-cash date. Plan your startup finances with confidence.
Cash & Revenue
Monthly Expenses
6.3 months
Cash Runway
$100,000
Gross Burn Rate
$80,000
Net Burn Rate
Jul 2026
Zero Cash Date
6
Months Until Zero
Current Cash$500,000
Monthly Revenue$20,000
Total Monthly Expenses$100,000
Net Burn (Expenses - Revenue)$80,000
Runway (Cash / Net Burn)6.3 months
Frequently Asked Questions
What is startup runway?
Startup runway is the amount of time (usually in months) a company can continue operating before running out of cash, based on its current burn rate and cash balance.
How do I calculate burn rate?
Burn rate = Monthly expenses - Monthly revenue. If expenses are $50k/month and revenue is $10k/month, your net burn rate is $40k/month.
What is a good runway length?
Most investors recommend at least 12-18 months of runway. Having 18+ months gives you time to iterate, find product-market fit, and fundraise without desperation.
How can I extend my runway?
Reduce expenses (cut hiring, lower marketing spend), increase revenue, or raise additional funding. Even small expense cuts can add months to your runway.