How accurate is the carbon footprint calculator?

This tool uses standard algorithms and formulas to ensure accuracy for typical use cases. For critical applications, we recommend verifying results with official methods or professionals.

Is this tool free to use?

Yes! This tool is completely free with no hidden costs, subscriptions, or limitations. Use it as often as you need.

Do I need to create an account?

No account needed. The tool works entirely in your browser without requiring signup or personal information.

Does this work on mobile devices?

Yes, this tool is fully responsive and works on smartphones, tablets, and all desktop browsers.

Absolutely. All processing happens locally in your browser. Your data never leaves your device and is not stored on any server.

Carbon Footprint Calculator

Transportation

Miles Driven Per Year

Vehicle Type

Public Transit Miles/Year

Do You Carpool?

Home Energy

Monthly Electricity (kWh)

Check your utility bill (avg household: 900 kWh)

Monthly Natural Gas (therms)

Check your utility bill (avg household: 40 therms)

Renewable Energy %

Primary Heating Source

Air Travel

Short Flights/Year (<3 hrs)

Long Flights/Year (3+ hrs)

Diet & Lifestyle

Diet Type

Local/Organic Food %

Your Carbon Footprint

0

Tons CO₂ per Year

Total carbon emissions

0%

vs Average Person

US avg: 16 tons/year

Emissions Breakdown

Transportation 0 tons

Home Energy 0 tons

Air Travel 0 tons

Diet & Food 0 tons

Top Reduction Tips

Carbon Offset Options

To offset your 0 tons of CO₂ annually:

Plant approximately 0 trees (absorb ~48 lbs CO₂/year each)
Estimated offset cost: $0 (at $15-20 per ton)
Consider renewable energy credits or carbon offset programs

Understanding Carbon Footprints

What is a Carbon Footprint?

Your carbon footprint is the total amount of greenhouse gases (primarily CO₂) that your activities generate. The average American produces about 16 tons of CO₂ per year, compared to the global average of 4 tons.

Why It Matters

Climate scientists recommend reducing global per capita emissions to 2-3 tons by 2050 to limit global warming to 1.5°C. Understanding your footprint is the first step toward meaningful reduction.

Emission Factors Used

This calculator uses EPA and IPCC standard emission factors: gasoline (19.6 lbs CO₂/gallon), electricity (0.92 lbs CO₂/kWh US average), natural gas (11.7 lbs CO₂/therm), short flights (0.24 tons CO₂ each), long flights (0.86 tons CO₂ each).

Quick Wins for Reduction

The biggest impacts come from: switching to an electric vehicle, improving home insulation, switching to renewable energy, reducing air travel, and shifting toward a plant-based diet. Even small changes in each category can significantly reduce your footprint.

How to Use This Calculator

Enter your annual miles driven and select your vehicle type
Add your monthly electricity and natural gas usage from utility bills
Include any air travel (number of flights per year)
Select your diet type and food sourcing habits
Click "Calculate" to see your total carbon footprint
Review the breakdown to identify your largest emission sources
Use the personalized tips to reduce your environmental impact

🌍 Carbon Footprint Calculator