Burn Rate Calculator
Calculate monthly cash burn for startups.
Input & results
Input values
Results
Enter values to see instant results.
Calculation History
- Your calculations will appear here.
Recent calculations are saved automatically as you adjust inputs.
Financial results are estimates for informational purposes only and are not financial, tax, or investment advice. Verify figures with a qualified professional before making decisions. See our full disclaimer.
What is Burn Rate?
The Burn Rate Calculator is a free online tool that helps you calculate monthly cash burn for startups. It applies the standard burn rate formula to your inputs and returns results instantly, with no spreadsheets or manual math required.
Built for founders, operators, and finance teams, this calculator turns Monthly Expenses, Monthly Revenue into a clear result you can act on. Every calculation runs privately in your browser, so your figures stay on your device. The page also explains the formula, defines each variable, and walks through a worked example so you understand exactly how the answer is derived.
Why is it used?
People use the Burn Rate Calculator to track growth, efficiency, and runway with confidence. It removes guesswork from startup metrics and SaaS unit economics, lets you compare scenarios in seconds, and helps avoid the rounding and formula errors that creep into manual or spreadsheet calculations.
Who should use it?
This calculator is ideal for founders, operators, and finance teams working through startup metrics and SaaS unit economics. Whether you are planning ahead, double-checking a figure, or learning how burn rate works, it gives dependable results in seconds.
How it works
- Enter Monthly Expenses, Monthly Revenue in the input fields.
- The calculator validates your entries and applies the correct burn rate formula.
- Results update in real time as you change any value — no submit button needed.
- Review the formula, variable definitions, and worked example below to see how the answer is derived.
Formula
Burn Rate = Monthly Expenses − Monthly Revenue
Variable definitions
| Variable | Meaning |
|---|---|
| expenses | Monthly Expenses |
| revenue | Monthly Revenue |
How the formula works
- Identify your input values: Monthly Expenses, Monthly Revenue.
- Apply the Burn Rate formula shown above.
- Read the result from the highlighted output panel.
Example calculation
Sample Burn Rate calculation
| Input | Value |
|---|---|
| Monthly Expenses | 100 |
| Monthly Revenue | 100 |
- Enter the sample values shown above into the Burn Rate Calculator.
- Review the live result panel for your exact output.
Result
Methodology
- Gather Monthly Expenses, Monthly Revenue from your documents or estimates.
- Enter each value in the matching field; units must match the labels.
- The calculator applies the Burn Rate formula and updates results in real time.
- Compare scenarios by changing one input at a time.
Benefits
- Instant burn rate results with no manual calculation.
- Fewer errors than spreadsheets or handheld calculators.
- Compare multiple scenarios in seconds by adjusting inputs.
- Free and private — calculations run on your device, no account needed.
Use cases
- Planning startup metrics and SaaS unit economics before making a decision.
- Double-checking figures from invoices, statements, or spreadsheets.
- Learning how burn rate is calculated, step by step.
- Comparing options quickly to find the best outcome.
Tips & important notes
- Confirm units match the field labels (e.g. months vs years, % vs decimal).
- Start with realistic baseline values, then adjust one input at a time.
- Cross-check important results with an official source or advisor.
- Use the copy button on results to save outputs for your records.
Common mistakes
- Mixing annual and monthly values (e.g. rate per year vs tenure in months).
- Entering a percentage as a whole number when a decimal is expected, or vice versa.
- Ignoring fees, taxes, or rounding rules that apply on top of the base formula.
Related concepts
- The core burn rate formula and what each variable means
- Unit conversions relevant to Monthly Expenses, Monthly Revenue
- Related calculators in the startup-saas category on Calcmate.live
Good to know