Lifestyle · Environment

Carbon Footprint Calculator

Estimate your annual greenhouse-gas footprint from home energy, driving, flying and diet — with a per-category breakdown and practical reduction tips.

Home energy (per month)

Electricity (kWh/month)

Natural gas (therms/month)

Transport

Car miles (per month)

Fuel economy (MPG)

Short flights (per year)

Long flights (per year)

Diet

Red meat (servings/week)

Poultry (servings/week)

Other meals (per week)

Estimated annual footprint

tonnes CO₂-equivalent per year—

Biggest source

—

Trees to offset

—

1 tree ≈ 22 kg CO₂/yr

Global average

4.7

tonnes per person

US average

tonnes per person

How the estimate works

Total = Σ (activity × emission factor)

Typical factors: electricity ≈ 0.39 kg CO₂e per kWh, natural gas ≈ 5.3 kg per therm, gasoline ≈ 8.9 kg per gallon, a short-haul flight ≈ 0.24 kg per mile, a long-haul flight ≈ 0.15 kg per mile, a red-meat serving ≈ 2.5 kg CO₂e. Figures follow EPA-style average grid mixes and are estimates, not personal audits.

🌿 Category breakdown

See exactly which part of your life drives emissions with a live bar chart.

🌳 Offset in trees

Convert your footprint into the number of trees needed to absorb it yearly.

📊 Compare to averages

Benchmark yourself against the global and US per-person averages.

💡 Actionable verdict

Get a short, honest recommendation based on your biggest source.

Measure more, spend smarter

Pair your footprint with a budget or salary check.

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