Carbon Footprint Calculator

Calculate your organization's emissions across Scope 1, 2, and 3. GHG Protocol methodology with transparent emission factors.

GHG Protocol Aligned 8/15 Scope 3 Categories

Emission Factor Sources

Scope 1 — Stationary & Mobile Combustion

Diesel2.68 kg CO₂/L (IPCC 2006, DEFRA 2024)

Gasoline2.31 kg CO₂/L (IPCC 2006, EPA 2024)

Natural Gas2.00 kg CO₂/kg (IPCC 2006)

Propane1.51 kg CO₂/kg (IPCC 2006)

Coal2.86 kg CO₂/kg (IPCC 2006)

Heating Oil2.52 kg CO₂/L (EPA 2024)

LPG1.51 kg CO₂/kg (DEFRA 2024)

Biodiesel2.52 kg CO₂/L (biogenic CO₂ reported separately)

Scope 2 — Electricity (Location-Based)

EU Average0.40 kg CO₂/kWh (IEA 2023)

Germany0.38 kg CO₂/kWh (IEA 2023)

France0.05 kg CO₂/kWh (IEA 2023, nuclear)

UK0.38 kg CO₂/kWh (DEFRA 2024)

US Average0.42 kg CO₂/kWh (EPA eGRID 2023)

China0.57 kg CO₂/kWh (IEA 2023)

India0.71 kg CO₂/kWh (IEA 2023)

Market-based method available below. Location-based uses grid-average factors. Market-based uses supplier-specific or residual mix factors.

Scope 3 — Coverage (8/15 Categories)

Cat 1: Purchased Goods & ServicesSpend-based EEIO (EXIOBASE)

Cat 2: Capital GoodsSpend-based EEIO (EXIOBASE)

Cat 4: Upstream TransportWeight-distance (GLEC/ISO 14083)

Cat 5: Waste GeneratedDisposal method (EPA WARM)

Cat 6: Business TravelDistance by mode (DEFRA 2024)

Cat 7: Employee CommutingDistance by mode (DEFRA 2024)

⚠️ 7 categories remaining (Fuel-related, Leased assets, Downstream transport, Processing, Use of products, End-of-life, Franchises, Investments).

Methodology Notes

Calculations follow GHG Protocol Corporate Standard (2015)
CO₂ equivalents use GWP-100 from IPCC AR6
Scope 2: Location-based method shown. Market-based optional.
Biogenic CO₂ from biomass reported separately
Results are estimates. For regulatory submissions, engage a qualified verifier.

Scope 1: Direct Emissions

Emissions from sources owned or controlled by your organization. Includes stationary combustion, mobile combustion, and fugitive emissions.

Stationary Combustion

Fuel Type

Quantity

Unit

Mobile Combustion (Fleet)

Vehicle Type

Distance (km)

Fuel Efficiency (L/100km)

Fugitive Emissions (Optional)

Refrigerant Type

Quantity Leaked (kg)

Refrigerant GWP: R-22=1810, R-410A=2088, R-134a=1430, R-32=675 (IPCC AR6)

Scope 3: Value Chain Emissions

Emissions from your value chain — typically 70-90% of total footprint. GHG Protocol identifies 15 categories. This calculator covers 8 categories.

Category 1: Purchased Goods & Services

GHG Protocol Corporate Value Chain Standard, Chapter 5. Typically 20-50% of Scope 3.

Annual Spend (€)

Primary Sector

Method: Spend-based using EEIO factors (EXIOBASE). Uncertainty: High (±50%).

Item	Qty	Unit	Factor (kg CO₂/unit)	Transport km

Method: Activity-based using supplier-specific or LCA database factors. Uncertainty: Low-Medium (±20%).

Formula: Emissions = Σ(Quantity × Unit Factor) + Σ(Transport Distance × Transport Factor)

Reference: GHG Protocol Scope 3 Standard, Chapter 5, p.61 (spend-based), p.65 (supplier-specific)

Category 4: Upstream Transportation & Distribution

GHG Protocol Corporate Value Chain Standard, Chapter 8. GLEC Framework / ISO 14083 aligned. Typically 5-15% of Scope 3.

Total Weight (kg)

Average Distance (km)

Transport Mode

Method: Weight-distance using GLEC Framework factors. Uncertainty: Medium (±30%).

Origin	Destination	Weight (kg)	Mode	Distance (km)	Reefer

Method: Shipment-level calculation. Reefer adds ~15% to factor. Uncertainty: Low-Medium (±20%).

Formula: Emissions = Σ(Weight (t) × Distance (km) × Mode Factor × Reefer Multiplier)

Reference: GHG Protocol Scope 3 Standard, Chapter 8. GLEC Framework v3.0. ISO 14083:2023.

Category 5: Waste Generated in Operations

GHG Protocol Corporate Value Chain Standard, Chapter 9. EPA WARM model. Typically 1-3% of Scope 3.

Total Waste (kg)

Primary Disposal Method

Method: Waste quantity × disposal method factor. Recycling shows as negative (credit). Uncertainty: Medium (±30%).

Waste Type	Quantity (kg)	Disposal Method

Method: Waste-type-specific factors from EPA WARM. Uncertainty: Low-Medium (±25%).

Formula: Emissions = Σ(Waste Quantity × Disposal Method Factor)

Reference: GHG Protocol Scope 3 Standard, Chapter 9. EPA WARM v16. DEFRA 2024 Waste Factors.

Total Carbon Footprint

0 tCO2e

Scope 1: 0 | Scope 2: 0 | Scope 3: 0

⚠️ Disclaimer: This calculator provides estimates for educational purposes. Results should be verified by a qualified carbon accounting professional before use in regulatory submissions or financial decisions. Emission factors are sourced from IPCC, EPA, DEFRA, and IEA — see factor panel for details.