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Carbon Footprint Converter

Convert between carbon emission units and calculate footprint of various activities

Carbon Footprint Converter

Common Conversions:

Conversion Formula:

t CO2e → kg CO2: multiply by 1000.000000

CO₂ vs. CO₂e:

CO₂ (carbon dioxide) refers specifically to carbon dioxide emissions.

CO₂e (carbon dioxide equivalent) encompasses all greenhouse gases converted to the equivalent warming effect of CO₂. This includes methane (CH₄), nitrous oxide (N₂O), and fluorinated gases, which have higher global warming potentials than CO₂.

Carbon Metrics Reference

ConceptDefinitionUnitsExample
Carbon FootprintTotal greenhouse gas emissions caused by an individual, event, organization, service, place or productCO₂eAverage person: ~4.8 tonnes CO₂e/year
Carbon IntensityAmount of carbon emitted per unit of energy or per unit of GDPg CO₂e/kWh or kg CO₂e/$Coal electricity: ~1,000 g CO₂e/kWh
Global Warming Potential (GWP)Measure of how much heat a greenhouse gas traps compared to CO₂CO₂eMethane GWP: 25-28 times CO₂
Carbon BudgetCumulative amount of carbon emissions permitted to limit global warming to a specific temperatureGt CO₂e1.5°C budget: ~400 Gt CO₂ remaining

Common Carbon Emissions

Transportation (per km)

  • Walking/Cycling0 kg CO₂e
  • Electric Vehicle0.053 kg CO₂e
  • Train0.041 kg CO₂e
  • Bus0.105 kg CO₂e
  • Average Car0.19 kg CO₂e
  • Plane (short haul)0.23 kg CO₂e

Food (per kg)

  • Potatoes0.3 kg CO₂e
  • Fruits (avg)0.5 kg CO₂e
  • Rice4.0 kg CO₂e
  • Chicken6.9 kg CO₂e
  • Beef27 kg CO₂e
  • Lamb39.2 kg CO₂e

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Carbon Footprint Visualization

Equivalent Carbon Footprint:
1.00 t CO₂e

Emissions Scale (Logarithmic):

0.01 kg1 kg100 kg10 t1,000 t1 Gt

Equivalent Activities:

📧
Sending 1 email with attachment
0.05 kg CO₂e
× 20,000
📺
Streaming video for 1 hour
0.065 kg CO₂e
× 15,385
📱
Charging smartphone for 1 year
2.6 kg CO₂e
× 385
🍔
Producing 1 hamburger
3 kg CO₂e
× 333
🥩
Producing 1 kg of beef
27 kg CO₂e
× 37
🧀
Producing 1 kg of cheese
13.5 kg CO₂e
× 74
🚗
1 km by car (average gasoline)
0.18 kg CO₂e
× 5,556
🚌
1 km by bus
0.105 kg CO₂e
× 9,524
🚆
1 km by train
0.035 kg CO₂e
× 28,571
✈️
1 km by plane (economy)
0.15 kg CO₂e
× 6,667
📱
New smartphone production
80 kg CO₂e
× 13
💻
New laptop production
300 kg CO₂e
× 3.3
🚙
New car production (mid-size)
5500 kg CO₂e
× 0.18
✈️
London to New York flight (per passenger)
986 kg CO₂e
× 1.0
👤
Average person daily emissions (global)
13 kg CO₂e
× 77
🏠
Average household yearly emissions (US)
48000 kg CO₂e
× 0.02

Conversion Reference:

• 1 kg CO₂ = 0.273 kg C
• 1 kg C = 3.67 kg CO₂
• 1 t = 1,000 kg
• 1 Mt = 1,000,000 t
• 1 Gt = 1,000 Mt
• CO₂e includes all greenhouse gases

Carbon Offsetting:

Carbon offsetting involves funding projects that reduce or remove carbon emissions to compensate for emissions produced elsewhere. Common approaches include:

  • • Renewable energy investments (wind, solar, hydro)
  • • Forest conservation and reforestation
  • • Carbon capture and storage technologies
  • • Methane capture from landfills or agricultural operations
  • • Energy efficiency improvements

While offsetting can help mitigate climate impact, the most effective approach is to first reduce emissions as much as possible.

Carbon Footprint Reduction Tips

🏠 At Home

  • • Switch to renewable energy providers
  • • Improve home insulation and energy efficiency
  • • Use energy-efficient appliances and lighting
  • • Reduce, reuse, and recycle waste
  • • Conserve water (especially hot water)

🚂 Transportation

  • • Walk, cycle, or use public transport
  • • Consider an electric or hybrid vehicle
  • • Carpool when possible
  • • Avoid unnecessary air travel

🍽️ Food Choices

  • • Reduce meat consumption, especially beef
  • • Choose local, seasonal produce
  • • Minimize food waste
  • • Opt for products with minimal packaging

Mobile tip: Swipe left or right on the unit dropdown to quickly change units, or use the arrow buttons

About the Carbon Footprint Converter

Convert between carbon emission units and calculate footprint of various activities All conversions run instantly in your browser and nothing you enter is sent to a server.

Common Conversion Formulas

FromToFormula
CO₂ Emissionskg CO₂ to Metric Tons CO₂Metric Tons = kg CO₂ / 1,000
Carbon Dioxide (CO₂)Carbon (C)CO₂ = C × 3.67
Driving EmissionsDistance (miles), Fuel Efficiency (mpg)kg CO₂ = (Distance / MPG) × 8.887
Electricity EmissionsEnergy (kWh), Grid Factor (kg CO₂/kWh)kg CO₂ = kWh × Grid Factor

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