Free business carbon footprint calculator using GHG Protocol Scope 1, 2 and 3. Estimate company CO2 from energy, vehicles, travel and supply chain.
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Every company, from startups to enterprises, has a carbon footprint. Understanding your business emissions is the first step toward sustainability, cost savings, and meeting regulatory requirements. Our Business Carbon Footprint Calculator uses the globally recognized GHG Protocol framework to estimate your company's Scope 1, 2, and 3 emissions—from direct fuel use to supply chain impacts.
A business carbon footprint measures the total greenhouse gas emissions produced by company operations. The GHG Protocol divides emissions into three scopes: Scope 1 covers direct emissions from owned sources (company vehicles, on-site fuel); Scope 2 includes indirect emissions from purchased electricity and heat; Scope 3 encompasses all other indirect emissions in the value chain including business travel, employee commuting, waste, and purchased goods. For most businesses, Scope 3 represents 70-90% of total emissions.
GHG Protocol Formula
Get a baseline understanding of company emissions without expensive consultants.
Quick estimates for reporting and identifying reduction opportunities.
Understand carbon costs for budgeting and carbon tax planning.
Evaluate supply chain emissions and vendor sustainability.
Build sustainability into business operations from day one.
Provide quick assessments for clients across industries.
Meet growing mandatory disclosure requirements like CSRD, SEC climate rules, and carbon taxes.
Identify energy inefficiencies that increase both emissions and operating costs.
Investors, customers, and employees increasingly demand sustainability commitments.
Differentiate your business with verified sustainability credentials.
Establish credible reduction goals aligned with the Paris Agreement.
Major companies now require suppliers to report and reduce emissions.
The GHG Protocol defines three emission scopes: Scope 1 is direct emissions from sources you own or control (company vehicles, on-site fuel burning, refrigerant leaks). Scope 2 is indirect emissions from purchased electricity, steam, heat, or cooling. Scope 3 covers all other indirect emissions in your value chain including business travel, employee commuting, purchased goods, waste disposal, and product use. Most companies find Scope 3 represents the majority of their footprint.
Science-based targets are emission reduction goals aligned with what climate science says is needed to limit global warming to 1.5°C or 2°C. The Science Based Targets initiative (SBTi) validates corporate targets. For most companies, this means reducing emissions by roughly 4.2% annually. Our calculator shows your current emissions versus the trajectory needed to meet these goals.
This calculator provides screening-level estimates useful for understanding your carbon footprint magnitude and identifying reduction priorities. For official reporting (CDP, GRI, SEC disclosures), you'll need detailed activity data and may require third-party verification. Our emission factors come from EPA, GHG Protocol, DEFRA, and peer-reviewed sources representing industry averages.
It varies significantly by industry. Office-based services typically range 3-5 tonnes CO₂e per employee, while manufacturing and logistics can exceed 10-15 tonnes. Science-based target pathways suggest all businesses should aim for roughly 2.5 tonnes per employee by 2030. Our calculator compares your results to industry averages so you can see how you stack up.
Top reduction strategies: 1) Switch to renewable electricity (often the biggest single action), 2) Electrify vehicle fleets, 3) Improve building energy efficiency, 4) Enable remote/hybrid work to reduce commuting, 5) Replace business flights with video conferencing, 6) Choose suppliers committed to net-zero, 7) Reduce and recycle waste, 8) Purchase carbon offsets for unavoidable emissions.
For comprehensive footprinting and science-based targets, yes. Scope 3 often represents 70-90% of a company's total emissions. However, Scope 3 is also the most challenging to measure accurately. Start with significant categories like business travel, employee commuting, and purchased goods. Many companies begin with Scopes 1 and 2, then expand Scope 3 tracking over time.