Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Total carbon intensity (incl. Scope 3)
404.2
Scope 1+2 intensity
70.83
Total emissions
48,500
Change vs. prior year Scope 1+2 intensity
-21.3%
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How to use this
- 1Enter scope 1+2 emissions (tCO2e).
- 2Enter scope 3 emissions (optional) (tCO2e).
- 3Enter annual revenue ($M).
- 4Enter prior year intensity (for comparison) (tCO2e/$M).
- 5Read your total carbon intensity (incl. scope 3) on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Absolute emissions numbers don't let investors compare a $50M company to a $5B one, so most ESG ratings agencies (MSCI, Sustainalytics) and investor disclosures normalize emissions by revenue — tons of CO2e per million dollars of revenue. This calculator takes your total Scope 1+2 (and optionally Scope 3) emissions and revenue to compute that intensity figure, then shows how it would change under different revenue growth or emissions reduction scenarios, which is the exact sensitivity analysis investor relations teams run before earnings calls or sustainability report publication. A declining intensity trend even amid absolute emissions growth is a legitimate and common way for growing companies to demonstrate decoupling of growth from environmental impact, and it's specifically what SBTi's economic intensity targets (as opposed to absolute targets) are designed to track for high-growth sectors.
Worked example
Using the values the calculator loads with:
Inputs
- Scope 1+2 emissions: 8500 tCO2e
- Scope 3 emissions (optional): 40000 tCO2e
- Annual revenue: 120 $M
- Prior year intensity (for comparison): 90 tCO2e/$M
Results
- Total carbon intensity (incl. Scope 3): 404.2
- Scope 1+2 intensity: 70.83
- Total emissions: 48,500
- Change vs. prior year Scope 1+2 intensity: -21.3%
What each field means
Inputs
- Scope 1+2 emissions (tCO2e)
- The scope 1+2 emissions used in the calculation, measured in tCO2e. Starts at 8500 tCO2e so you have a working example on load.
- Scope 3 emissions (optional) (tCO2e)
- The scope 3 emissions (optional) used in the calculation, measured in tCO2e. Starts at 40000 tCO2e so you have a working example on load.
- Annual revenue ($M)
- The annual revenue used in the calculation, measured in $M. Starts at 120 $M so you have a working example on load.
- Prior year intensity (for comparison) (tCO2e/$M)
- The prior year intensity (for comparison) used in the calculation, measured in tCO2e/$M. Starts at 90 tCO2e/$M so you have a working example on load.
Results
- Total carbon intensity (incl. Scope 3)
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Scope 1+2 intensity
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total emissions
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Change vs. prior year Scope 1+2 intensity
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why do investors care more about intensity than absolute emissions?
Absolute emissions naturally rise with company growth unless you're actively decarbonizing faster than you're growing, which is rare and often unrealistic for early-stage or high-growth companies. Intensity strips out the size effect so investors can compare emissions efficiency across companies of very different scale within the same sector.
Should I use market cap or revenue as the denominator?
Revenue-based intensity is the GHG Protocol and CDP standard and is what most sector benchmarking uses. Some financial-sector frameworks (like PCAF for lenders) use enterprise value or invested capital instead, so check what your specific rating agency or reporting framework requests before publishing a number.
My intensity improved but absolute emissions still rose — is that a problem?
Not necessarily, and it's a common and defensible pattern for growth-stage companies — it shows emissions decoupling from revenue growth even while total footprint increases. Be transparent about both numbers in disclosures rather than only publishing the flattering one, since sophisticated ESG raters and NGOs check for both.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Carbon Intensity per Revenue Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/esg-carbon-intensity-revenue
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/esg-carbon-intensity-revenue" target="_blank" rel="noopener">Carbon Intensity per Revenue Calculator — RevenueLab</a> (2026).</p>
Source: [Carbon Intensity per Revenue Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/esg-carbon-intensity-revenue) (2026).