Track Scope 1, 2, and 3 emissions accurately. Adjust factors, review categories, and export summaries. Turn operational activity data into actionable climate insights today.
Enter activity data and emission factors below, then submit. Your calculated result will appear here above the form.
Category emissions (kg CO₂e) = Activity Data × Emission Factor
Scope 1 = Natural Gas + Fleet Diesel + Fleet Gasoline + Refrigerant Leakage
Scope 2 (Location) = Purchased Electricity × Grid Factor
Scope 2 (Market) = (Grid kWh × Grid Factor) + (Renewable kWh × Renewable Factor)
Scope 3 = Travel + Hotels + Commuting + Waste + Water + Purchased Goods
Total footprint = Scope 1 + Scope 2 + Scope 3. Intensity metrics divide the market-based total by employees, revenue, floor area, or units.
Use factors aligned with your reporting framework and geography. Default factors are placeholders for estimation and should be replaced with verified values.
Sample activity and factor values for a mid-sized corporate site. Replace with your measured utility, travel, and procurement data.
| Input Item | Activity | Factor | Unit |
|---|---|---|---|
| Natural Gas | 150,000 | 0.184 | kWh / kgCO₂e per kWh |
| Fleet Diesel | 12,000 | 2.68 | liters / kgCO₂e per liter |
| Purchased Electricity | 420,000 | 0.45 | kWh / kgCO₂e per kWh |
| Renewable Electricity | 90,000 | 0.02 | kWh / kgCO₂e per kWh |
| Air Travel | 120,000 | 0.15 | km / kgCO₂e per km |
| Purchased Goods Spend | 1,800,000 | 0.35 | currency / kgCO₂e per unit |
Strong reporting begins with a defined inventory boundary and a stable reporting year. This calculator organizes inputs into Scope 1, Scope 2, and Scope 3 to support consistency and audit readiness. Scope 1 covers fuel combustion and refrigerants, Scope 2 covers purchased electricity, and Scope 3 covers travel, commuting, waste, water, and purchased goods. Keeping boundaries unchanged across periods reduces double counting, improves comparability, and strengthens management decisions across diverse business units and reporting teams reliably.
Input quality determines result credibility. Teams should source activity values from utility bills, fuel cards, fleet logs, maintenance records, booking platforms, waste manifests, water invoices, and procurement reports. Default values are useful for testing scenarios, but formal reporting should use measured data whenever possible. The calculator’s category fields expose missing inputs early, helping finance, facilities, and sustainability teams validate units, remove duplicates, and document assumptions before executive review and assurance testing clearly.
Emission factors usually create the largest differences between similar organizations. This calculator supports custom factors for every activity input, helping users align with national grids, supplier disclosures, and approved factor libraries. Electricity is modeled with location-based and market-based methods, so renewable procurement effects remain visible and transparent. Good governance means recording factor sources, unit bases, publication years, and approvers, then reviewing updates annually under a controlled change process internally.
Totals are useful for target setting, while intensity metrics reveal operational efficiency. The calculator reports market-based totals and intensity values per employee, revenue unit, floor area, and production unit. These indicators show whether emission growth comes from business expansion or declining efficiency. If totals rise while intensity improves, growth may be the driver. If both worsen, teams should review energy use, travel behavior, refrigerant management, and purchasing patterns quickly and systematically consistently.
The ranked breakdown table is designed for action planning. High-impact categories usually deserve priority because they deliver larger reductions per project effort. Common interventions include renewable electricity contracts, equipment retrofits, leak detection programs, travel approval controls, route optimization, and supplier engagement for carbon-intensive purchases. After each review, export the summary to CSV or PDF and compare periods using the same method to track progress, verify savings, and support disclosure narratives quarterly.
Use both when possible. Location-based shows average grid intensity, while market-based reflects contractual electricity choices. Present both internally, then follow your reporting framework for the primary disclosed figure.
You can, but it is less precise than supplier or product data. Start with spend-based factors for coverage, then replace material categories with supplier-specific or activity-based values as data quality improves.
Review factors at least annually and whenever a major methodology update occurs. Keep a change log showing source, version, publication year, and approval date so results remain traceable.
Market-based accounting reflects contractual procurement choices, such as certificates or supplier agreements. Location-based accounting still uses the grid average factor for your region, even if you buy renewable power.
Enter zero only for truly absent activity. For unknown values, estimate with a documented method, flag the assumption, and replace it later. Transparent estimates are better than hidden gaps.
Track intensity alongside total emissions. Totals show absolute climate impact, while intensity reveals operational efficiency. Reviewing both helps leaders avoid misleading conclusions during growth, consolidation, or output changes.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.