Carbon Footprint Calculator

Putting a single annual number on the emissions tied to how you drive, power your home, fly, and eat makes an abstract problem concrete. That figure points you toward the habits where change actually moves the needle, which matters more as the world pushes to hit 2026 climate targets. Set against the projected 2026 US average, your own total stops being a number in isolation and becomes something you can judge.

The estimate adds up emissions from four sources. Driving multiplies your annual miles by a gasoline emissions factor of roughly 8.89 kg CO2e per gallon for 2026, assuming 25 MPG average fuel efficiency. Home electricity takes your annual kWh and multiplies it by the projected 2026 US grid intensity of about 0.38 kg CO2e/kWh. Air travel scales with distance flown and aircraft type, while diet draws on average emissions factors for food categories such as meat, dairy, and plant-based options, weighted by how often you report eating each.

No tool of this kind delivers a precise audit; real measurement depends on variables this model leaves out. Two factors people routinely underrate are frequent short flights and heavy red-meat consumption, both of which carry more weight than they appear to. Honest inputs produce the truest reflection, and a high total is a starting line rather than a verdict, since each adjustment you make pulls the number down.