How to Use Startup Runway Calculator
The Startup Runway Calculator projects your company's financial longevity based on its current cash reserves, monthly expenses (burn rate), and revenue generation. It provides a clear timeline, enabling proactive decision-making to extend your operational period.
What It Does
Use the calculator with intent
The Startup Runway Calculator projects your company's financial longevity based on its current cash reserves, monthly expenses (burn rate), and revenue generation. It provides a clear timeline, enabling proactive decision-making to extend your operational period.
Ideal for startup founders, entrepreneurs, and financial managers who need to understand their company's financial health and plan for the future. It's especially useful for pitch decks, fundraising strategies, and identifying critical points for cost reduction or revenue acceleration.
Interpreting Results
Start with Runway Months. Then compare Default Date before deciding what changes the answer most.
Input Steps
Field by field
- 1
Cash On Hand
Enter cash on hand, monthly burn, current monthly revenue, expected monthly revenue growth, and any planned burn reduction. Use fully loaded burn including payroll, software, rent, and debt service so runway reflects real cash usage.
- 2
Monthly Burn
Read runway months, projected cash-out date, monthly cash projection, and break-even month. Fewer than 6 months of runway is usually acute, while 12-18 months gives most startups a healthier fundraising or restructuring window.
- 3
Monthly Revenue
Compare break-even month to cash-out month, not just to your optimism about growth. If break-even arrives after cash reaches zero, the current plan still fails even if the top-line narrative sounds attractive.
- 4
Revenue Growth Pct
Use the projection to test a no-growth case, a modest growth case, and a burn-cut case before making hiring or fundraising decisions. If a 10% burn reduction adds more runway than an aggressive growth assumption, the operations lever is probably safer than the sales story.
- 5
Burn Reduction Pct
Re-run monthly after the close and after any staffing, pricing, or financing change. Track actual runway versus modeled runway because even one or two bad months can pull the cash-out date forward sharply.
Run one base case and one sensitivity case before trusting a single output.
Common Scenarios
Use realistic starting points
Baseline assumptions
Cash On Hand
$150,000
Monthly Burn
25000
Monthly Revenue
5000
Revenue Growth Pct
5
Start with runway months and compare it with default date before changing anything.
Higher Cash On Hand
Cash On Hand
$180,000
Monthly Burn
25000
Monthly Revenue
5000
Revenue Growth Pct
5
Watch how runway months shifts when cash on hand changes while the rest stays steady.
Lower Monthly Burn
Cash On Hand
$150,000
Monthly Burn
21250
Monthly Revenue
5000
Revenue Growth Pct
5
Watch how runway months shifts when monthly burn changes while the rest stays steady.
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FAQ
Questions people ask next
The short answers readers usually want after the first pass.
Sources & References
- What is a Burn Rate? — Investopedia
- How to Calculate Startup Runway & Why it Matters — Startups.com
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