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fin.startup-runway-calculator Calculator
Calculates startup cash runway in months from current cash balance and monthly net burn rate. Six months of runway requires immediate fundraising; 18 months is the comfortable minimum — below 6 months, the focus must shift entirely to extending runway.
Inputs
Cash On Hand
Reference formula or conversion factor shown for context.
Monthly Revenue
Total income generated before any costs are deducted. Profitability depends on how much survives after expenses.
Monthly Burn Rate
Reference formula or conversion factor shown for context.
Revenue Growth Pct
Total income generated before any costs are deducted. Profitability depends on how much survives after expenses.
Results
runway (months)
The result expressed in months. Divide by 12 to convert to years.
current net burn rate
Electric charge flow rate (A). Governs wire sizing — too much current causes dangerous heating. Fuses protect circuits from overcurrent.
months to break-even (static)
The price, quantity, or time at which total revenue equals total cost — neither profit nor loss.
cash on hand
Sample size or count used in the calculation.
default runway (no growth)
The absolute increase in value over the period. Growth = final value minus initial value.
VC rule
Reference formula or conversion factor shown for context.