Carbon Footprint Calculator
Calculate your total annual CO2e from home energy, travel, diet, and shopping. Compare to the UK and world average, and get a personalised reduction plan ranked by impact.
Transportation
Home Energy
Diet & Shopping
Detailed Category Breakdown
| Category | kg CO2e/yr | Tonnes CO2e | % of Total |
|---|---|---|---|
| Transportation | 6,144 | 6.144 | 37.9% |
| Home Energy | 7,349 | 7.349 | 45.4% |
| Diet | 2,500 | 2.500 | 15.4% |
| Shopping | 542 | 0.542 | 3.3% |
| TOTAL | 16,204 | 16.204 | 100% |
Scenario Comparison
| Scenario | Annual CO2e (kg) | Tonnes | Change vs Current | vs US Avg |
|---|---|---|---|---|
| ★ Current Habits | 16,204 | 16.20 | — | 101% |
| -1 Long Flight/Year | 16,204 | 16.20 | — | 101% |
| Switch to Electric Car | 14,270 | 14.27 | -1,934 kg | 89% |
| Adopt Vegetarian Diet | 15,420 | 15.42 | -784 kg | 96% |
Prioritized Reduction Actions
How to Use the Carbon Footprint Calculator
- 1
Enter home energy data
Input your monthly electricity and gas bills or annual consumption figures. Approximate values work fine.
- 2
Add transport details
Enter your annual car mileage and fuel type, plus the number of flights you take each year and typical distances.
- 3
Describe your diet and shopping
Select how often you eat meat and your approximate level of consumer goods purchases.
- 4
View results and reduction plan
See your total CO2e broken down by category, compare it to the UK average, and review a ranked list of the changes with the biggest impact.
Key Features
8-Category Breakdown
Covers home energy, car travel, flights, diet, and shopping for a complete picture of your personal emissions.
Global Benchmarks
Instantly compare your footprint to the UK average (10t CO2e/year) and the global average (7t CO2e/year).
Reduction Plan
Get a personalised action plan ranked by impact so you focus on the changes that move the needle most.
Pro Tips
Use your actual energy bills for the most accurate result. Monthly averages from the past 12 months work better than seasonal estimates.
The diet category often surprises people - switching from daily meat to a few times a week can save over 0.5 tonnes CO2e per year.
Run the calculator twice - once for your current lifestyle and once with planned changes - to quantify the impact before committing.
Privacy Note
All calculations run entirely in your browser — no data is sent to any server. Your inputs are never logged, stored, or shared. This tool is completely free with no account or registration required.
Frequently Asked Questions
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