Calculator Inputs
Enter activity data for the chosen reporting period. You can also edit emission factors to match a region, supplier, or internal sustainability framework.
Example data table
This example uses the default monthly values included in the form.
| Item | Example value | Output |
|---|---|---|
| Electricity | 1,200 kWh with 15% renewable share | 428.40 kg CO₂e |
| Natural gas | 80 therms | 424.00 kg CO₂e |
| Gasoline | 150 L | 346.50 kg CO₂e |
| Diesel | 60 L | 160.80 kg CO₂e |
| LPG | 25 L | 37.75 kg CO₂e |
| Flights | 900 km | 135.00 kg CO₂e |
| Waste | 320 kg with 30% diversion | 127.68 kg CO₂e |
| Water | 45 m³ | 15.30 kg CO₂e |
| Gross total | All sources combined | 1,675.43 kg CO₂e |
| Net total | After 150 kg CO₂e offsets | 1,525.43 kg CO₂e |
| Annualized net | Monthly total × 12 | 18,305.16 kg CO₂e |
Formula used
Electricity kWh × Grid factor × (1 − Renewable share ÷ 100)
Activity amount × Source-specific emission factor
Waste kg × Waste factor × (1 − Recycling rate ÷ 100)
Gross emissions − Verified offsets
Net period footprint × Period multiplier
How to use this calculator
Choose the reporting period first. Enter your activity data for energy, transport, waste, water, and fuels. Keep all values in the displayed units for consistent results.
Review or replace the emission factors if you use region-specific, supplier-specific, or audited internal data. This makes the estimate better aligned with your reporting boundary.
Add offsets only after gross emissions are calculated. Use employees, production units, and floor area if you want intensity metrics for benchmarking.
Press the calculate button. The page will show totals, category shares, intensity indicators, a reduction target scenario, a breakdown table, and a Plotly graph above the form.
FAQs
1. What does this estimator measure?
It estimates carbon dioxide equivalent emissions from electricity, fuels, flights, waste, and water. The tool combines activity data with editable factors, then reports gross, net, annualized, and intensity-based results.
2. Why are emission factors editable?
Emission factors vary by country, grid mix, fuel quality, and reporting method. Editable fields let you adapt the calculator to local regulations, supplier data, or internal sustainability assumptions.
3. Does renewable power lower the electricity result?
Yes. The calculator reduces electricity emissions by the renewable share percentage you enter. This gives a simple adjusted estimate for mixed electricity sourcing.
4. How is recycling reflected?
The waste result is reduced by the recycling or diversion rate. Higher diversion lowers waste-related emissions in this simplified estimator.
5. What is the difference between gross and net footprint?
Gross footprint is the total from all activity sources before offsets. Net footprint is the remaining emissions after verified offsets are applied, capped so they never exceed gross emissions.
6. When should I use intensity metrics?
Use intensity metrics when you want fair comparisons across sites, teams, or time periods. Per employee, per unit, and per area figures often reveal efficiency changes better than totals alone.
7. Is this enough for formal reporting?
It is best for planning, screening, and internal analysis. Formal disclosures usually need boundary definitions, auditable factor sources, data controls, and methodology notes beyond a quick calculator.
8. Can I export the result?
Yes. After calculation, use the CSV or PDF buttons above the form. They export the current result summary and source breakdown for quick sharing or documentation.