Startup Runway
The number of months a startup can continue operating before it runs out of cash, based on its current burn rate and available capital.
Mission Control shows your runway, burn rate, and projected cash-out date — all computed from your inputs.
What is Startup Runway?
Startup runway is the most critical metric for any founder managing cash. It answers one question: how long can you keep going before the money runs out?
Runway is calculated by dividing your total available cash by your monthly net burn rate. If you have $500,000 in the bank and you're burning $50,000 per month net, you have 10 months of runway.
The number isn't static — it changes every time you hire someone, close a deal, or cut a tool. That's why founders need a system that recomputes runway from current reality, not a spreadsheet frozen in time.
Why it matters
Runway determines every major decision a founder makes. When to hire, when to fundraise, when to cut costs, whether to pursue a new market — all of these depend on how many months you have left.
Most founders overestimate their runway because they calculate it once and don't update it as expenses change. A 15-month runway can become 9 months after two hires and a new tool subscription, and many founders don't notice until it's too late.
Formula
Runway (months) = Total Cash / (Monthly Expenses - Monthly Revenue)
Example
A startup has $600,000 in cash. Monthly payroll is $70,000, tools cost $5,000, and commitments are $10,000. Monthly revenue is $25,000. Net burn = $85,000 - $25,000 = $60,000. Runway = $600,000 / $60,000 = 10 months.
How RunwayCal helps
RunwayCal computes your runway in real-time from the team, tools, commitments, and revenue you define. Every time you add a team member or close a deal, your runway number updates instantly. No formulas, no spreadsheet maintenance.
Common mistakes
- 1Calculating runway once and not updating it as expenses change
- 2Forgetting to include upcoming expenses like annual tool renewals or planned hires
- 3Using gross burn instead of net burn, which ignores revenue
Know your exact runway — updated in real-time
RunwayCal computes your runway from the financial reality you define. Every hire, every tool, every deal changes the number instantly.
See your runway → Start free