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Household Electricity Emissions Calculator

Annual CO₂ from your monthly electric bill.

Estimate the annual CO₂ equivalent emissions from your home electricity use, given monthly kWh consumption and the carbon intensity of your local grid (in g CO₂e per kWh).

Marcus Laurent By Marcus Laurent
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

kWh
g CO₂e/kWh

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Annual kg CO₂e = monthly_kwh · 12 · grid_g_per_kwh / 1000.

In depth

Estimate the annual CO₂ equivalent emissions from your home electricity use, given monthly kWh consumption and the carbon intensity of your local grid (in g CO₂e per kWh).