Startup Runway Calculator
Determine how long your startup can operate with current financial metrics
Runway Overview
Financial Inputs
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How to Use the Startup Runway Calculator
Enter your current cash balance, monthly burn rate (total monthly expenses), and monthly revenue if applicable. The calculator shows your remaining runway — the number of months until your funds run out at the current spending rate.
Add projected changes like planned hiring, expected revenue growth, or upcoming funding to model different scenarios. The timeline visualization shows when your cash reaches critical levels under each scenario.
Use the survival planning mode to determine the maximum burn rate you can sustain to reach a specific milestone date, or calculate how much funding you need to extend runway to your next fundraising target.
Why Use This Tool
Cash runway is the most critical metric for any startup. Running out of money before achieving key milestones means the company fails regardless of product quality or market potential. Founders and finance teams need clear visibility into how long their current funds will last.
This calculator turns abstract financial numbers into concrete timelines, helping founders make informed decisions about hiring speed, marketing spend, and fundraising timing. It is essential for board presentations, investor updates, and strategic planning.
Key Features
- Runway calculation from cash balance and burn rate
- Revenue offset for net burn rate calculation
- Scenario modeling with different spending and growth assumptions
- Timeline visualization showing cash depletion curve
- Funding gap analysis for fundraising planning
- Monthly and weekly burn rate breakdown
Frequently Asked Questions
What is startup runway?
Startup runway is the amount of time a company can continue operating before running out of cash, assuming current income and expenses remain constant. It is calculated as: Runway (months) = Cash Balance / Monthly Net Burn Rate. Net burn rate is total monthly expenses minus monthly revenue.
What is a healthy runway for a startup?
Most investors and advisors recommend maintaining at least 12-18 months of runway. Start fundraising when you have 6-9 months remaining, as raising capital typically takes 3-6 months. Below 6 months of runway is considered a danger zone.
How do I reduce burn rate without hurting growth?
Focus on the largest expense categories first — usually payroll and office costs. Consider delaying non-essential hires, negotiating vendor contracts, switching to remote work, and cutting underperforming marketing channels. Reduce expenses that do not directly contribute to your next milestone.
Should I include committed but unreceived funding in runway?
Only include funds that are legally committed and have a clear timeline for transfer. Verbal commitments, pipeline deals, or grants with pending approval should be modeled as scenarios, not included in your base runway calculation.