Carbon Footprint Calculator
Estimate your greenhouse gas emissions from electricity consumption, fuel use, vehicle travel, and flights — all in one place. Results are based on globally recognised emission factors from the IPCC and IEA.
Electricity
Coal, natural gas, oil, solar, and wind — enter kWh consumed per source.
Fuel Consumption
Gasoline, diesel, propane, or coal — enter litres or kg consumed.
Vehicle Travel
Car or motorcycle — enter fuel type, fuel efficiency, and distance.
Flights
Short-haul or long-haul — enter distance in km for each flight.
Add your activities.
Get your total CO₂ in seconds.
Enter as many sources as you need across all four categories. The calculator adds them up and shows your total CO₂ equivalent emissions in kilograms — broken down by category so you can see exactly where your emissions come from.
Carbon Footprint Calculator
Calculate emissions from electricity, fuel, transportation, and flights
Electricity Consumption
Fuel Consumption
Vehicle Emissions
Flight Emissions
Total CO2 Emissions: 0.00 kg
How to Use This Calculator
Select a category and add your sources
The calculator covers four emission categories. Work through each one that applies to you — you can add multiple sources within each category using the Add Source button.
Click "Calculate Total Emissions"
Once you have entered all your sources, click the calculate button. The result shows your total CO₂ equivalent emissions in kilograms, broken down by category so you can see at a glance which activities contribute most.
Review and refine
Use the Remove button to delete any entry and adjust your inputs. You can run the calculator multiple times — for example, comparing your current situation with a scenario where you switch from coal to solar electricity, or replace a car journey with a flight.
Use the result for reporting or planning
The CO₂ figure produced is suitable for use in preliminary sustainability assessments, ESG reporting inputs, building energy audits, and project carbon estimates. For formal carbon accounting, the figure should be verified against country-specific emission factors.
Emission Factors Used in This Calculator
All emission factors are sourced from internationally recognised references including the Intergovernmental Panel on Climate Change (IPCC) and the International Energy Agency (IEA). These are the same factors used in professional carbon accounting and sustainability reporting.
| Source | Emission Factor | Unit | Notes |
|---|---|---|---|
| Coal (electricity) | 0.90 kg CO₂ | per kWh | Highest emission electricity source |
| Oil (electricity) | 0.82 kg CO₂ | per kWh | Oil-fired power generation |
| Natural gas | 0.50 kg CO₂ | per kWh | Cleaner than coal but still fossil fuel |
| Solar PV | 0.04 kg CO₂ | per kWh | Lifecycle emissions including manufacture |
| Wind | 0.02 kg CO₂ | per kWh | Lowest lifecycle emission source |
| Gasoline (fuel) | 2.31 kg CO₂ | per litre | Direct combustion emissions |
| Diesel (fuel) | 2.68 kg CO₂ | per litre | Higher carbon content than gasoline |
| Propane (fuel) | 1.51 kg CO₂ | per litre | LPG combustion |
| Coal (fuel) | 2.42 kg CO₂ | per kg | Direct combustion of solid coal |
| Short-haul flight | 0.25 kg CO₂ | per km | Includes radiative forcing multiplier |
| Long-haul flight | 0.18 kg CO₂ | per km | Lower per-km at cruising altitude |
Key Terms Explained Simply
Carbon Footprint
The total amount of greenhouse gases — primarily CO₂ and methane — produced directly and indirectly by a person, organisation, facility, or activity. Expressed in kilograms or tonnes of CO₂ equivalent (CO₂e).
CO₂ Equivalent (CO₂e)
A standard unit for measuring carbon footprints that accounts for all greenhouse gases, not just CO₂. Methane and nitrous oxide are more potent than CO₂ and are converted to their CO₂ equivalent using global warming potential (GWP) factors.
Emission Factor
The quantity of CO₂ produced per unit of an activity — for example, per kWh of electricity consumed or per litre of fuel burned. Emission factors are established through scientific measurement and updated by international bodies such as the IPCC and IEA.
Scope 1, 2 and 3 Emissions
Scope 1 covers direct emissions from owned sources (fuel combustion, vehicles). Scope 2 covers indirect emissions from purchased electricity. Scope 3 covers all other indirect emissions in the value chain, including business travel and supply chain. This calculator covers Scope 1 and 2 primarily.
Radiative Forcing
The additional warming effect of aircraft emissions at high altitude beyond the CO₂ itself — including the formation of contrails and cirrus clouds. The short-haul flight factor in this calculator includes a standard radiative forcing multiplier to account for this effect.
Lifecycle Emissions
The total emissions associated with a source across its entire life — including manufacture, operation, and disposal. Solar and wind emission factors are lifecycle figures, which is why they are much lower than fossil fuels even though their manufacture requires energy.
How Does Your Result Compare?
Once you have your total, these global benchmark figures help you put it in context:
What to Do With Your Result
Identify your largest sources
The category breakdown shows where your emissions come from. Focus reduction efforts on the largest contributors first — typically electricity consumption and vehicle travel.
Switch to cleaner energy sources
Replacing coal electricity with solar or wind reduces the emission factor by over 95%. Run the calculator again with a cleaner energy source to see the impact immediately.
Use for ESG or audit reporting
The result provides a preliminary estimate suitable for inclusion in sustainability reports, energy audit documentation, and early-stage ESG assessments.
Track changes over time
Run the calculator regularly — quarterly or annually — to track whether your emissions are reducing as you implement energy efficiency measures or switch to renewable sources.
Important Disclaimer
This calculator provides an estimate of CO₂ equivalent emissions based on the values entered and the emission factors listed above. Results are intended for informational, planning, and preliminary reporting purposes only.
Emission factors vary by country and grid. The electricity emission factors used here are global averages. Your actual grid emission factor may be significantly different depending on your country's energy mix — for example, a country with a high proportion of hydroelectric power will have a much lower grid emission factor than one relying heavily on coal.
Vehicle emissions depend on actual fuel consumption. The vehicle calculation uses fuel efficiency and distance. Actual fuel consumption varies with driving style, road conditions, vehicle age, and load.
For formal carbon accounting, verified reporting under GHG Protocol, ISO 14064, or other standards, always use country-specific and activity-specific emission factors verified by a qualified environmental professional.
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