Measure enterprise emissions across scopes with reliable factors. Export reports and benchmark hotspots for action, compliance, and strategy.
| Category | Activity | Example value | Unit |
|---|---|---|---|
| Scope 1 | Diesel | 12,000 | L |
| Scope 1 | Natural gas | 90,000 | kWh |
| Scope 2 | Electricity | 650,000 | kWh |
| Scope 3 | Air travel | 120,000 | km |
| Scope 3 | Commuting | 220,000 | km |
| Scope 3 | Purchased goods | 2,500,000 | USD |
A robust enterprise inventory starts by defining organizational control, operational boundaries, and a clear reporting period. Track monthly activity for fuels, electricity, travel, and waste, then roll up to quarterly and annual totals. Consistent boundaries reduce year‑to‑year noise and support credible disclosures. Many teams also tag each record with site and department, enabling internal benchmarking.
Scope 1 includes direct combustion and fugitive emissions. Convert fuel volume to energy and apply an emission factor, then add refrigerant leakage using mass‑based factors. For example, diesel often ranges near 2.6–2.8 kg CO2e per liter, while natural gas factors are typically expressed per kWh or per cubic meter. Record meter readings, purchase invoices, and maintenance logs. If fuel data is captured in gallons, convert to liters, and document assumptions.
Scope 2 can be calculated using location‑based and market‑based methods. Location‑based uses grid average factors (kg CO2e per kWh). Market‑based adjusts for supplier contracts and energy attribute certificates. Many grids vary widely, from below 0.1 to above 0.8 kg CO2e/kWh, so selecting the correct regional factor materially changes totals. For multi‑country operations, keep one factor per location and year, and update when utilities publish revisions.
Scope 3 often dominates total footprint. High‑leverage categories include business travel, employee commuting, waste, upstream transportation, and purchased goods. Spend‑based screening helps identify hotspots quickly, then activity‑based data improves accuracy. For air travel, short‑haul flights usually have higher emissions per kilometer than long‑haul due to takeoff and landing intensity. Waste factors differ by treatment route; landfill, recycling, and composting can vary by several multiples, so capturing disposal method improves insight.
Once totals are stable, derive intensity KPIs such as tCO2e per employee, per square meter, or per revenue unit. Use baselines to set reduction targets, evaluate abatement projects, and track progress. Pair emissions with cost and risk metrics to prioritize actions like efficiency upgrades, electrification, fleet optimization, and supplier engagement. A practical governance rhythm is monthly data checks, quarterly management review, and an annual assurance‑ready package with factor sources and change logs.
Activity inputs use practical units like kWh, liters, kilometers, tonnes, and USD. Emissions are calculated in kg CO2e, then converted to tCO2e for scope totals and reporting outputs.
Yes. Replace the grid factor with a market-based factor that reflects supplier contracts and certificates for the reporting year. Keep documentation so factor changes are transparent and auditable.
Value-chain emissions can include travel, logistics, waste, and upstream purchased goods, which often exceed on-site fuel and electricity. Screening Scope 3 helps identify supplier and procurement hotspots.
Start with spend-based estimates for missing categories, then migrate to activity-based data from invoices, logistics partners, and travel systems. Maintain factor sources and assumptions, and review anomalies monthly.
No. Defaults are placeholders to help users begin. Replace them with factors from your approved library, national inventories, or supplier-specific documentation aligned to your reporting year and boundary.
After you submit, the app stores the latest results in the current browser session. Download buttons export those stored totals and the line-item breakdown, so you can share outputs without re-entering data.
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.