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Cash Burn Rate and Runway Calculator — result sheet
Calculate average monthly cash burn and estimated runway from starting cash, current cash, and elapsed months.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Monthly burn=(starting cash−current cash)/months elapsed; runway=current cash/monthly burn when burn is positive.
The calculation distinguishes cash consumed during the observed period from the forward arithmetic runway estimate.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Starting cash — minimum 0; maximum 1000000000000
- Current cash — minimum 0; maximum 1000000000000
- Months elapsed — minimum 1.0E-6; maximum 10000
Worked example
| Input | Value |
|---|---|
| Starting cash | 250000 |
| Current cash | 190000 |
| Months elapsed | 6 |
Burn =10,000/month; runway =19 months.
Assumptions and limits
- Cash values use one currency and current cash cannot exceed starting cash for a positive-burn scenario.
- The observed burn rate is treated as constant for the runway estimate.
- Financing, revenue changes, seasonality, commitments, insolvency, and business advice are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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