How it works
Fill in the 4 fields above and Carbon Footprint Calculator calculates the result instantly, recalculating as you change any value. The math runs locally in your browser — nothing is sent to a server.
Examples
- Electricity 900 kWh/mo, Natural gas 40 therms/mo, Driving 150 mi/week → Annual footprint: 12.4 tonnes CO₂
Frequently asked questions
How do I use the Carbon Footprint Calculator?
Enter your values in the 4 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
Is my data private?
Yes. The Carbon Footprint Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Carbon Footprint Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on environment and the rest of the platform, you can use it as often as you like.
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