Cash Burn Runway Calculator
Track monthly operating expenditure and calculate how long your company can survive before running out of cash. Plan smarter with real-time runway projections.
Financial Inputs
Enter your company's financial metrics to calculate runway.
Runway Analysis Results
Real-time burn rate and cash runway projections.
Monthly Net Burn
$0
Expenses minus revenue
Annual Run Rate
$0
Monthly expenses x 12
Cash Runway
0 months
Until reserve threshold
Projected Runway Date
-
Based on current burn
Runway Status
-
How Cash Burn Runway Calculator Works
Calculate how long your startup can operate before running out of cash. Track monthly burn rate, run rate, and runway with our free planner.
Core Use Case Scenario
Calculate how long your startup can operate before running out of cash. Track monthly burn rate, run rate, and runway with our free planner.
Troubleshooting & Edge-Case Failure Points
- Verify all required fields are filled.
- Ensure numeric inputs use valid formats.
- Clear browser cache if values appear stale.
- Use a modern browser for full compatibility.
Step-by-Step Instructions
- Open the tool and review default values.
- Enter your parameters in the input fields.
- Click calculate to see results.
- Review output and use Copy Result if needed.
Related Web Utilities (Silo Hub)
Informative Guides & Helper Articles
Cash Burn Runway vs Run Rate: Key Metrics for Startup Survival
Understand the critical differences between cash burn runway and annual run rate. Learn why both metrics matter for startup financial planning and fundraising.
Read Article →How to Calculate Monthly Burn Rate: Step-by-Step Guide
Learn how to calculate monthly burn rate for your startup. A comprehensive guide covering net burn, gross burn, and operational efficiency metrics.
Read Article →Reducing Operating Expenses: Strategies to Extend Startup Runway
Discover proven strategies for reducing operating expenses and extending startup cash runway. Learn how to optimize costs without sacrificing growth or team morale.
Read Article →Startup Cash Runway Planning Guide: From Seed to Series A
A complete guide to planning startup cash runway from seed funding through Series A. Learn milestones, benchmarks, and strategies to extend your runway.
Read Article →Venture Capital Funding Timeline: How It Affects Your Runway
Understand the venture capital funding timeline from seed to IPO and how each round impacts your startup cash runway. Plan your fundraising strategy accordingly.
Read Article →How to Use the Cash Runway Calculator
- Enter cash in the bank (operating accounts, not restricted cash).
- Enter monthly cash out (gross burn) and monthly cash in (revenue collected).
- Read net burn and runway in months — how long the company survives at the current rate.
How the Math Works
Worked example: $850,000 in the bank, spending $95,000/month, collecting $55,000: net burn = $40,000/month, runway = 850,000 ÷ 40,000 = 21.3 months. Investor convention: under 12 months of runway triggers a raise or a cut; many funds now advise 18–24 months after the 2022–23 corrections. Two distinctions that matter: gross vs. net burn (a $95k gross burn with $55k revenue is a very different company than $95k net with no revenue) and burn vs. burn-up — runway math assumes a straight line, but growing revenue extends it and hiring cliffs (two engineers starting the same month) shorten it in steps. Recompute after every month-end close, not quarterly.
Cash Runway FAQ
How much runway should a startup have?
18-24 months is the current standard; under 12 months means raising or cutting now, because fundraises take 3-6 months themselves.
What is the difference between gross and net burn?
Gross burn is total monthly spend; net burn is spend minus revenue collected. Net burn is what actually depletes the bank account.
Does runway assume flat spending?
Yes - the formula is a straight line. Hiring plans, churn, and seasonal revenue all bend it; model scenarios rather than trusting one number.
How do I extend runway without killing growth?
Rank spend by revenue productivity per dollar before cutting across the board: pause nice-to-have tools, stretch hiring 1-2 quarters, fix collections (DSO), and cut paid channels with CAC payback over 12 months.