Startup runway calculator
Use cash balance, monthly expenses, current revenue, growth assumptions, and buffer to understand how long the business can operate before needing more capital.
Use it before hiring, fundraising, launching a new product, or deciding whether to cut expenses. A runway model helps founders turn a vague cash concern into a concrete timeline.
Simple formula: runway = cash balance / monthly net burn
Runway changes when revenue grows, churn increases, hiring accelerates, invoices are delayed, or one-time costs hit earlier than expected. Recalculate after major operating changes.
Compare the result with your next financing milestone. If runway is too short, reduce burn, increase revenue, delay hiring, or raise before the timeline becomes urgent.