Measure operational emissions across key business activities quickly. Adjust factors, document sources, and compare scenarios. Export results, set targets, and report with confidence today.
Start by defining organizational boundaries using an equity share or control approach, then set operational boundaries across Scope 1, Scope 2, and relevant Scope 3 categories. Materiality is driven by spend, activity volume, and stakeholder expectations. This calculator helps you consolidate high-signal sources quickly, so you can prioritize hotspots like on-site fuel, electricity, and business travel while documenting exclusions and improving coverage over time.
Keep source documents aligned to each input line item: utility bills for electricity, fuel invoices for combustion, and travel reports for passenger-kilometers. Track reporting period, site, and data owner for each dataset. When factors change, record factor name, year, and region. Consistent versioning improves comparability across quarters and speeds assurance checks without forcing you to rebuild your inventory structure.
Factors should match your activity unit and geography. For electricity, prefer supplier-specific disclosure or grid-average values for the same year. For fuels, select factors that already include upstream and non-CO2 components if your method requires it. This tool multiplies activity by factors, so unit mismatches are the most common error. Convert inputs before calculation and apply the same unit conventions across sites.
Totals are useful, but decisions usually come from the breakdown. Compare scopes to identify where interventions will have the highest marginal impact. Scope 2 often responds to efficiency and renewable procurement, while Scope 1 may require equipment upgrades or refrigerant management. Use scenario runs to estimate savings from reduced kWh, lower travel, or fleet fuel switching, then translate reductions into annual targets.
Exported tables support disclosures, internal dashboards, and supplier engagement. Attach assumptions, factors, and calculation notes to your CSV or PDF outputs to preserve audit trails. For month-over-month operations, reuse the same factor set and update activities only. Over time, expand Scope 3 coverage by adding purchased goods, capital goods, and upstream transport, keeping the same calculation logic and documentation discipline.
Link emissions to cost centers and invoice codes so changes trace to decisions. Pair results with metering plans and maintenance schedules to sustain savings. Ask suppliers for factors and transport distances to replace generic estimates. Shared ownership across finance, facilities, and procurement keeps the inventory current each month and improves assurance readiness consistently.
Use the same period as your financial or sustainability reporting, such as monthly, quarterly, or annual. Keep the period consistent across scopes so comparisons and intensity tracking remain meaningful.
No. The defaults are placeholders to demonstrate calculations. Replace them with verified factors from your utility disclosure, national inventories, or a recognized methodology that matches your boundary choices.
If your method allows market-based accounting, you can apply supplier-specific factors or instruments-backed values. For location-based reporting, use the grid-average factor for the region and year.
Refrigerants have high climate impact. The calculator multiplies leaked mass by a 100-year GWP to express the result as CO2-equivalent, supporting consistent aggregation with other sources.
Yes. Use the same structure: activity data multiplied by an appropriate factor. Many teams add purchased goods, capital goods, commuting, and upstream transport as data maturity improves.
Exports work well for audit trails, internal reviews, and sharing assumptions. Attach factor sources, unit conversions, and notes about missing data so reviewers can reproduce your inventory reliably.
| Scope | Activity | Value | Unit | Factor | Factor Unit | Emissions (kgCO2e) |
|---|---|---|---|---|---|---|
| Scope 1 | Natural gas | 12,000 | kWh | 0.1840 | kg/kWh | 2,208.00 |
| Scope 1 | Diesel | 800 | L | 2.6800 | kg/L | 2,144.00 |
| Scope 2 | Electricity | 25,000 | kWh | 0.5500 | kg/kWh | 13,750.00 |
| Scope 3 | Flights | 18,000 | passenger-km | 0.1500 | kg/pkm | 2,700.00 |
| Example total (kgCO2e) | 20,802.00 | |||||
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.