Measure monthly cash burn and runway for startup sustainability.
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The Cash Burn Rate Calculator shows how quickly your business is spending its cash reserves and exactly how many months of runway remain. Whether you are a pre-revenue startup or a growing company managing seasonal cash flow, this tool gives you the visibility needed to plan ahead and avoid running out of funds.
Cash burn rate measures the net amount of cash a business spends each month after accounting for any incoming revenue. By dividing your current cash on hand by your monthly net burn, you get your runway, the estimated number of months before funds are exhausted. Monitoring burn rate is critical for startups seeking funding, businesses navigating slow seasons, and any company that needs to time its next capital raise or cost reduction. This free, browser-based calculator delivers the answer in seconds.
Enter your current cash on hand, your average monthly inflow, and your average monthly outflow. Click Calculate and the tool computes your net burn rate and remaining runway instantly. All calculations run locally in your browser, so your sensitive financial data never leaves your device and no login is required. Adjust any figure to model different spending scenarios, revenue projections, or fundraising outcomes in real time.
Most experienced investors and startup advisors recommend maintaining at least 18 to 24 months of runway at all times. The rationale is practical: a fundraising round typically takes 6 to 9 months from initial investor conversations to cash in the bank, and that process often takes longer than founders expect. Starting fundraising with less than 12 months of runway puts the company in a position of negotiating from desperation, which weakens deal terms and increases the risk of running out of funds before closing. For Malaysian startups seeking funding from Cradle Fund, MAVCAP, or private investors, the same principle applies. If your runway drops below 12 months, treat it as an immediate signal to either reduce monthly outflows or accelerate revenue generation before starting formal fundraising conversations.
Gross burn rate is the total amount of cash a company spends each month, regardless of any revenue coming in. Net burn rate is gross burn minus monthly revenue — it represents the actual net cash consumption after revenue offsets some of the outflow. For a pre-revenue startup with no inflows, gross burn and net burn are identical. For a company generating RM50,000 per month in revenue but spending RM80,000, the gross burn is RM80,000 and the net burn is RM30,000. Net burn is the more important figure for runway calculation because it reflects the true rate at which the company is consuming its cash reserves. Gross burn is useful for understanding the total cost structure and identifying where spending reduction would have the greatest impact on extending runway.
Yes. All values entered into the Cash Burn Rate Calculator — including cash on hand, monthly inflow, and monthly outflow — are processed entirely within your browser and are never transmitted to or stored by Popupnote.com's servers. The tool operates fully client-side using JavaScript. No financial data is logged or shared. Closing or refreshing the page clears all entered values.