Electricity CO₂ emissions calc (kWh→kg-CO₂ conversion)

Presets and sharing

Example preset

Quick check

Pick a preset. Check the units. Run once.

Then change one value and run again.

Compare the two results before you export.

Use official factors when you publish numbers.

Inputs

amount of electricity

emission factor

Coefficient presets are examples (not official values).

Emissions (target)

Results

Estimated emissions

—

kg-CO₂: —
t-CO₂: —
Electric energy (Wh): —
Electric energy (kWh): —
Electric energy (MWh): —
Emission factor (kg-CO₂/kWh): —
Emission factor (g-CO₂/kWh): —
Formula used: —
Input recap: —

Relationship graph (approximate)

It is a straight line from electric energy (kWh) → emissions (kg) when the emission coefficient is fixed.

Assumptions & limits

Depending on the emission factor assumption (kg CO₂/kWh), the results will vary greatly even with the same amount of electricity.
Coefficient presets are example values for learning and UI confirmation. Official values/latest values are not guaranteed.
This tool is for approximate purposes only. Use official calculation methods for regulatory, reporting, and compliance applications.

FAQ

What is the emission factor?

This is a guideline for the amount of CO₂ emitted when using 1kWh of electricity. It varies depending on the power source composition and calculation method (location-based / market-based, etc.).

What is the difference between LCA-based and operational-based?

The LCA-based approach includes the entire life cycle of fuel extraction, transportation, power generation equipment, etc., while the operational-based approach focuses on direct emissions during power generation. Since the coefficients used differ depending on the purpose, the results will vary even with the same kWh.

Are the preset numbers official?

No. Coefficient presets are example values. For institutional purposes and public reporting, please use the official values specified by the supplier or the institution.

Can it also be used for CO₂e (CO₂ conversion)?

Similar calculations are possible by using CO₂e as the coefficient. Please interpret the display label according to the purpose of use.

Which emission factor should I start with?

Use the factor required by your supplier, regulator, or reporting method. For scenario checks, start with a clear example factor, then change energy use or the factor one at a time.

How to use Electricity CO₂ emissions calculation effectively

Choose the right factor

Start with the emission factor required by your supplier, regulator, or reporting method. Use location-based and market-based factors consistently; do not mix them in the same comparison.

Keep units explicit

Enter energy in Wh, kWh, or MWh and choose whether the factor is kg CO₂/kWh or g CO₂/kWh. The calculator converts units before multiplying, so a unit mismatch is easier to spot.

Compare scenarios

Run one baseline, then change only energy use, the factor, or the target emissions. The reverse modes estimate allowable energy use or the required factor for a target.

Reporting caution

Treat preset factors as examples. For reports, use the published factor for the electricity plan, region, inventory year, and CO₂ or CO₂e boundary you need.