Carbon Footprint Calculator 🌍

⚙️ Electricity grid emission factor — select your region

⚡ Electricity

Monthly electricity consumption 150 kWh/mo

Grid emission factor varies by region — select above

💡 World average household: ~150–300 kWh/month

🔥 Heating

Natural gas 50 m³/mo

CH₄ + 2O₂ → CO₂ + 2H₂O · Factor: 2.204 kg CO₂/m³ (global, IPCC)

Coal / solid fuel boiler 0 kg/mo

C + O₂ → CO₂ · Factor: 2.42 kg CO₂/kg (bituminous coal, IPCC)

🚗 Transport

Car (petrol/diesel) 100 km/wk

2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O · World avg car: 0.21 kg CO₂/km (IEA)

Bus / coach 20 km/wk

Per passenger: 0.089 kg CO₂/km (Eurostat avg)

Metro / train (electric) 20 km/wk

Electric traction (grid-adjusted): 0.041 kg CO₂/km per passenger

Flights (total per year) 0 km/yr

Including radiative forcing multiplier ×2: 0.255 kg CO₂-eq/km (IPCC)

🥗 Diet

Type of diet

Livestock: CH₄ enteric fermentation + CO₂ from land use, transport & processing (Oxford/Poore 2018)

Your annual carbon footprint

—

CO₂-equivalent per year

⚡ Electricity

🔥 Heating

🚗 Transport

🥗 Diet

🌍 World average

4,700 kg

📍 Region avg

—

🌿 Paris 2050 target

2,000 kg

🌳 To offset your footprint, you would need to plant

—

1 tree absorbs ~22 kg CO₂/year (mature broadleaf, IPCC)

📖 Key chemical reactions

Natural gas combustion:CH₄ + 2O₂ → CO₂ + 2H₂O

Coal / carbon combustion:C + O₂ → CO₂

Petrol combustion:2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

Photosynthesis (CO₂ removal):6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

Livestock methane (enteric):CH₄ · GWP×28 = 28 kg CO₂-eq / kg CH₄