Estimate your company's total carbon footprint across Scope 1, 2, and 3 emissions. Enter direct, energy, and supply chain data to see total CO2 in tonnes per year.
Businesses of all sizes contribute to climate change through their operations, energy purchases, and supply chains. Measuring a company's carbon footprint is the essential first step toward setting reduction targets, reporting to stakeholders, and meeting regulatory requirements. The GHG Protocol divides corporate emissions into three scopes: direct combustion (Scope 1), purchased energy (Scope 2), and value chain activities (Scope 3).
This Business Carbon Footprint Calculator simplifies the process by letting you enter estimates for each scope. For Scope 1, enter fuel consumption from company vehicles and onsite heating. For Scope 2, enter purchased electricity. For Scope 3, enter estimated supply chain and employee commuting emissions. The tool sums all three scopes into a total corporate footprint.
Whether you're a small business starting your sustainability journey or a larger firm benchmarking against industry averages, this calculator provides a quick, useful estimate that can guide more detailed auditing and reporting.
This measurement provides a critical foundation for energy auditing and sustainability reporting, helping organizations meet regulatory requirements and voluntary environmental commitments.
Corporate carbon measurement is increasingly required by regulators, investors, and customers. This calculator gives you a fast, structured estimate across all three emission scopes, helping you identify hotspots and set science-based reduction targets. Regular monitoring of this value helps energy teams detect usage anomalies early and address equipment malfunctions or operational issues before they drive utility costs higher.
Total CO2 = Scope 1 + Scope 2 + Scope 3. Scope 2 = Annual kWh × grid_factor / 1000 (in tonnes). Scopes 1 and 3 entered directly in tonnes.
Result: 1,130 tonnes CO2/year
Scope 1: 120 t. Scope 2: 500,000 × 0.42 / 1,000 = 210 t. Scope 3: 800 t. Total: 120 + 210 + 800 = 1,130 tonnes.
The GHG Protocol established three scopes to organize corporate emissions. Scope 1 is direct and easiest to control. Scope 2 depends on energy purchasing decisions. Scope 3 spans the entire value chain and is the most comprehensive but also the most challenging to measure accurately.
Begin by collecting utility bills (Scope 2) and fuel purchase records (Scope 1). For Scope 3, use spend-based estimates as an initial proxy: multiply total procurement spending by industry-average emission factors. Refine over time with supplier-specific data.
Measurement without action is pointless. Once you have a baseline, identify the top three emission sources and develop reduction plans. Common quick wins include switching to renewable electricity, optimizing logistics, and encouraging remote work.
Scope 1 covers direct emissions from sources owned or controlled by your company. This includes fuel burned in company vehicles, natural gas used for heating, and any onsite industrial processes that produce CO2.
Scope 2 covers indirect emissions from purchased electricity, steam, heating, and cooling. Even though the emissions occur at the power plant, they result from your energy consumption and are attributed to your company.
Scope 3 includes all other indirect emissions in your value chain: employee commuting, business travel, purchased goods, transportation, waste, and use of sold products. It's typically the largest and hardest scope to measure.
While not always legally required, knowing your footprint helps you reduce costs, meet customer expectations, and prepare for future regulations. Many SMEs start with Scopes 1 and 2, which are straightforward to estimate.
This calculator provides a screening-level estimate. For formal reporting (CDP, SBTi, SEC climate disclosures), you'll need detailed activity data and verified emission factors. Use this tool to get started and identify priority areas.
A science-based target aligns your emission reduction goals with the Paris Agreement's aim to limit warming to 1.5°C. The SBTi validates targets, typically requiring a 4.2% annual reduction in absolute emissions.