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Calculate startup runway from cash balance and burn rate — see months, weeks and zero-cash date.
Calculate startup runway from cash balance and burn rate — see months, weeks and zero-cash date.
Enter values above and click Calculate — results will appear here with the formula explained.
Runway is months until cash hits zero at current net burn. It is cash divided by net monthly burn. Weeks multiplies by 4.345, zero-cash date adds months to today. Gross burn is shown for context but runway uses net (cash decline). A $420k cash pile at $26.7k net burn is 15.7 months — but if gross is $36.7k, you need 6 months of revenue to offset, so runway is sensitive to revenue dips.
To use the Runway Calculator, enter cash balance and net burn per month. Add gross burn to see efficiency gap. The tool shows runway in months, weeks, days and estimated zero-cash date. Model: cutting burn 20% from $26.7k to $21.4k lifts runway from 15.7 to 19.6 months. Use the example to avoid using gross burn by mistake and overstating runway.
Runway Calculator: Calculate startup runway from cash balance and burn rate — see months, weeks and zero-cash date. Formula: Runway months = cash / net burn. Example: $420k cash / $26.
Runway is months until cash hits zero at current net burn. It is cash divided by net monthly burn. Weeks multiplies by 4.345, zero-cash date adds months to today. Gross burn is shown for context but runway uses net (cash decline). A $420k cash pile at $26.7k net burn is 15.7 months — but if gross is $36.7k, you need 6 months of revenue to offset, so runway is sensitive to revenue dips.
To use the Runway Calculator, enter cash balance and net burn per month. Add gross burn to see efficiency gap. The tool shows runway in months, weeks, days and estimated zero-cash date. Model: cutting burn 20% from $26.7k to $21.4k lifts runway from 15.7 to 19.6 months. Use the example to avoid using gross burn by mistake and overstating runway.
$420k cash / $26.7k net burn = 15.7 months, 68 weeks, zero around early 2028. At $21.4k burn, runway is 19.6 months — 4 months gained.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
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