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Burn Rate Calculator

Calculate gross and net monthly cash burn rate for your startup.

Introduction

Burn Rate Calculator — Calculate gross and net monthly cash burn rate for your startup. Enter Starting cash, Ending cash, Number of months, Monthly operating expenses (optional), Monthly revenue (optional) to get an instant, accurate result.

Formula

Cash burn rate = (starting cash − ending cash) / number of months. Net burn rate (when provided) = monthly expenses − monthly revenue.

Step-by-step

  1. Enter the Starting cash.
  2. Enter the Ending cash.
  3. Enter the Number of months.
  4. Enter the Monthly operating expenses (optional).
  5. Enter the Monthly revenue (optional).
  6. Click Calculate to see your result instantly.

Real-world example

Example: With Starting cash = 100000, Ending cash = 70000, Number of months = 3, Monthly operating expenses (optional) = 0, Monthly revenue (optional) = 0, the Burn Rate Calculator gives Cash Burn Rate: 10000, Gross Burn Rate: 0, Net Burn Rate: 0.

Frequently Asked Questions

What's the difference between gross burn and net burn?
Gross burn is total monthly operating expenses; net burn subtracts monthly revenue from that, showing the actual net cash outflow — a business can have high gross burn but low net burn if revenue is growing.
How is burn rate used?
It's the key input for calculating runway — how many months of operation remain before cash runs out at the current spending pace.
What inputs does the Burn Rate Calculator need?
You'll need to provide: Starting cash, Ending cash, Number of months, Monthly operating expenses (optional), Monthly revenue (optional). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Burn Rate Calculator?
The Burn Rate Calculator applies the formula exactly as calculated — Cash burn rate = (starting cash − ending cash) / number of months. Net burn rate (when provided) = monthly expenses − monthly revenue. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Burn Rate Calculator free to use?
Yes, the Burn Rate Calculator is completely free, requires no signup, and runs instantly in your browser.

About the Burn Rate Calculator

The Burn Rate Calculator uses a real, verifiable formula — Cash burn rate = (starting cash − ending cash) / number of months. Net burn rate (when provided) = monthly expenses − monthly revenue. — so results are accurate every time, not an approximation.