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Divides cash on hand by average monthly cash burn (money leaving faster than arriving). Ignores fundraising timing, revenue ramps, and one-time expenses.
Quick answer: Burn Rate Runway Calculator
Divide cash on hand by average monthly net burn unless burn is zero, in which case runway is not a finite clock in this toy model.
Example: $900k cash, $180k average net burn → about five months if absolutely nothing changes.
Calculations follow the documented formula on this page; rounding and input units can change the last digit-treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
Board decks still love the months-to-zero chart even though real plans layer revenue ramps, fundraise windows, and lumpy payroll taxes.
Divides cash on hand by average monthly cash burn (money leaving faster than arriving). Ignores fundraising timing, revenue ramps, and one-time expenses.
Inputs on this page: Cash on hand, Average monthly net burn. Assumptions stay visible so you can reproduce the figure elsewhere.
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Read guide →People who care about burn rate calculator use Burn Rate Runway Calculator as a planning sandbox: Treat undrawn revolvers as policy-dependent, not automatic runway extensions.
Continue in the Business category hub, the Business & SaaS tools collection, or the glossary. Related calculators in this session: Break-even Calculator Business, Profit Margin Calculator Business, Emergency Fund Calculator, ROI Calculator, Net Worth Tracker Projection, CAC Calculator SaaS.
The Formula
Runway (months) ≈ Cash on hand ÷ Average monthly net burn (undefined if burn is 0)| This tool | Runway (months) ≈ Cash on hand ÷ Average monthly net burn (undefined if burn is 0) |
|---|---|
| Related intent: burn rate calculator | See paired tools for burn rate calculator-each page documents its own core relationship next to the live form. |
| Related intent: startup runway calculator | See paired tools for startup runway calculator-each page documents its own core relationship next to the live form. |
Core relationship for Burn Rate Runway Calculator:
Runway (months) ≈ Cash on hand ÷ Average monthly net burn (undefined if burn is 0)
Worked check: $900k cash, $180k average net burn → about five months if absolutely nothing changes.
Keep the same assumptions and open a neighbor calculator when your question branches: Break-even Calculator Business, Profit Margin Calculator Business, Emergency Fund Calculator, ROI Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
$900k cash, $180k average net burn → about five months if absolutely nothing changes.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
People who care about burn rate calculator use Burn Rate Runway Calculator as a planning sandbox: Treat undrawn revolvers as policy-dependent, not automatic runway extensions.
Instant response
Run Burn Rate Runway Calculator in the browser and read the breakdown beside the form.
Transparent formula
The formula and worked example on this page match what the calculator uses.
Privacy friendly
No account required; inputs stay in your session unless you choose to share them.
Cross-device ready
Layout works on mobile, tablet, and desktop for the same field labels.
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
Reviewed July 18, 2026 · Content stamp 2026-07-18
Click a question to expand the answer.
You are cash-flow flat or positive; runway in this simple model is not finite-reforecast with realistic growth spend.
Conservative planning uses cash only; add available draws only if your policy allows counting them.
No. Use actual cash movement or a CFO-quality cash forecast.
Fold hiring into your average burn figure before using the tool.
Add a safety-months rule of thumb outside this calculator.
Divide cash on hand by average monthly net burn unless burn is zero, in which case runway is not a finite clock in this toy model.
$900k cash, $180k average net burn → about five months if absolutely nothing changes.
Treat undrawn revolvers as policy-dependent, not automatic runway extensions. Non-cash expenses belong only if your cash forecast already stripped them. Hiring plans belong inside the burn numerator, not as a surprise afterward.
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Reviewed by Toollabz Editorial
Product editor | Last reviewed July 18, 2026
See methodology and editorial policy.