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Cash Runway Calculator

Estimate startup runway and projected cash balance over time.

Last validated: 2026-02-14

Use this free online Cash Runway Calculator to estimate how long cash reserves last given revenue and burn assumptions. Use it for budgeting, pricing, forecasting, and comparison work where small input changes can materially affect the final decision. The form focuses on Cash on hand ($), Monthly revenue ($), Monthly expenses ($), Monthly revenue growth (%) and returns Runway Inputs, Runway Result, so you can move from input to answer without setting up a spreadsheet or custom script. Run one realistic example, adjust the inputs, and compare how the result changes before you copy or share it. The output is an estimate rather than financial advice, so confirm assumptions, taxes, fees, and policy details before making commitments.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Runway Inputs

Estimate cash runway from burn and projected revenue growth.

Runway Result

Estimated runway: 10.0 months

Net burn: $25,000.00/month

Projected depletion month (with growth): 12

Month 1: Revenue $35,000.00 | Balance $225,000.00
Month 2: Revenue $35,700.00 | Balance $200,700.00
Month 3: Revenue $36,414.00 | Balance $177,114.00
Month 4: Revenue $37,142.28 | Balance $154,256.28
Month 5: Revenue $37,885.13 | Balance $132,141.41
Month 6: Revenue $38,642.83 | Balance $110,784.23
Month 7: Revenue $39,415.68 | Balance $90,199.92
Month 8: Revenue $40,204.00 | Balance $70,403.92
Month 9: Revenue $41,008.08 | Balance $51,412.00
Month 10: Revenue $41,828.24 | Balance $33,240.23
Month 11: Revenue $42,664.80 | Balance $15,905.04
Month 12: Revenue $43,518.10 | Balance -$576.86
Month 13: Revenue $44,388.46 | Balance -$16,188.40
Month 14: Revenue $45,276.23 | Balance -$30,912.16
Month 15: Revenue $46,181.76 | Balance -$44,730.41
Month 16: Revenue $47,105.39 | Balance -$57,625.02
Month 17: Revenue $48,047.50 | Balance -$69,577.52
Month 18: Revenue $49,008.45 | Balance -$80,569.07
Month 19: Revenue $49,988.62 | Balance -$90,580.45
Month 20: Revenue $50,988.39 | Balance -$99,592.06
Month 21: Revenue $52,008.16 | Balance -$107,583.90
Month 22: Revenue $53,048.32 | Balance -$114,535.58
Month 23: Revenue $54,109.29 | Balance -$120,426.29
Month 24: Revenue $55,191.47 | Balance -$125,234.81

How to use this tool

  1. Enter Cash on hand ($), Monthly revenue ($), Monthly expenses ($), Monthly revenue growth (%) for the cash runway calculator, keeping units, dates, or text format consistent with the form labels.
  2. Confirm the currency, time period, rate, and fee assumptions before calculating the estimate.
  3. Click "Run the tool" and review Runway Inputs, Runway Result for the primary output.
  4. Test a conservative and aggressive scenario so the decision is not based on a single fragile estimate.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

  • Cash on hand: 250000.0
  • Monthly revenue: 35000.0
  • Monthly expenses: 60000.0
  • Monthly growth percent: 2.0
  • Net burn: 25000.0
  • Runway months: 10.0
  • Projected runway months: 12
  • Cash flow positive:

Expected Outputs

  • Cash on hand: 250000
  • Monthly revenue: 35000
  • Monthly expenses: 60000
  • Monthly growth percent: 2

Interpretation

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