Track Scope 1, 2, and 3 impacts easily. Adjust factors, units, and operational boundaries fast. Export results, spot hotspots, and prioritize practical actions now.
Provide what you know, leave the rest at zero. Edit factors if you have verified values.
Sample inputs and typical outputs for demonstration. Replace with your own measured data.
| Scenario | Electricity (kWh) | Diesel (L) | Flights (pkm) | Waste (kg) | Total (tCO2e, location-based) |
|---|---|---|---|---|---|
| Mid-size office | 180,000 | 2,400 | 95,000 | 12,000 | ~140 |
| Light manufacturing | 520,000 | 18,000 | 55,000 | 42,000 | ~600 |
| Logistics hub | 340,000 | 45,000 | 25,000 | 20,000 | ~1,000 |
Note: This tool estimates CO2e using user-provided factors. Standards may require additional gases, categories, and boundary rules.
For formal reporting, align categories and boundaries with your chosen framework and assurance requirements.
Start by defining organizational boundaries for owned sites, leased assets, and joint ventures. In many inventories, Scope 2 is 25–55% of location-based totals for service firms, while heavy industry often shows Scope 1 dominance. Use this calculator to enter fuel, refrigerant loss, and process emissions, then validate each activity with meter totals and procurement records. Document any exclusions, and reconcile totals with energy bills to prevent gaps quickly.
Data maturity improves results more than perfect factors. Track electricity in kWh, liquid fuels in liters, and travel in passenger‑kilometers with a documented conversion log. If monthly data is available, sum it to the reporting year and compare variance to prior years. A practical control is a ±10% tolerance check against utility invoices and fleet card statements.
The tool reports location-based electricity using the grid factor and market-based electricity using a renewable share. If renewable share increases from 0% to 60%, the market-based Scope 2 electricity term drops by 60% when the renewable factor is set to zero. Record supplier instruments separately so the same kWh is not double counted across sites.
After calculation, review the top contributors table. Typical hotspots include diesel for generators, high‑GWP refrigerant leakage, and spend-based purchasing. Create an abatement list with an annual tCO2e reduction estimate, capital cost, and implementation months. Prioritize options with low cost per tCO2e and short lead times, then re-run scenarios to quantify residual emissions.
Absolute totals support disclosure, but intensity supports performance tracking during growth. Use tCO2e per employee for office-heavy operations, tCO2e per million USD revenue for multi-entity groups, and tCO2e per square meter for real estate portfolios. Set a baseline year and aim for consistent reductions, such as 3–7% per year, while monitoring structural changes.
Export CSV for audit trails and maintain factor sources in a controlled register. Keep a change log for boundary updates, factor revisions, and category additions. For assurance, retain evidence for each major line item: invoices, meter downloads, travel reports, and waste tickets. The calculator’s breakdown helps reviewers trace totals back to activity and confirm arithmetic integrity.
It covers combustion of natural gas, diesel, gasoline, and LPG, plus refrigerant leakage using your selected GWP and any direct process emissions you enter in tCO2e.
Scope 2 is shown two ways: location-based using the grid factor, and market-based using your renewable electricity share and renewable factor, plus purchased heat/steam.
Use location-based for tracking system decarbonization and consistency across regions. Use market-based when you have credible supplier instruments and want targets aligned to procurement choices.
Spending proxies average supply chains and price variability. They are useful for screening hotspots, but supplier-specific product footprints or activity data usually improves accuracy and makes reductions measurable.
Yes. Enter leaked mass in kilograms and replace the default GWP with the refrigerant’s GWP you use. If you have leak rate, multiply it by total charge to estimate leaked mass.
Exports include the full breakdown table, scope totals, and both location- and market-based results. Use CSV for audits and analysis, and PDF for summaries and sharing with stakeholders.
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.