Employee Commuting Emission Factors

27 emission factors held in the GreenCalculus MasterBrain, drawn from 1 named source, listed with its publisher and licence under Sources below. Values are read live from the data layer on every page build, so nothing here is re-typed and nothing can drift from the figures the calculators use. They span 3 units of measurement — 16 of them in kg CO2e per km — which is why the spread below is reported per unit and never blended. The count includes 3 homeworking factors, a family too small to warrant a page of its own and published nowhere else.

Where these factors are used

Employee Commuting and Homeworking Emissions sets out how factors in this group are applied, and Scope 3 Cat 7 Employee Commuting & Work-From-Home Calculator and Office Carbon Footprint Calculator draw on them directly. Each value below names the upstream source it came from.

What this group contains

Figures are computed per unit and never blended: a median across different units would be arithmetically valid and physically meaningless.

What has changed

Change history is reconstructed from every released edition of the data layer, v2025.13 to v2026.107. A factor absent from this table has held the same value throughout. A change shown as a dash moved off zero, where a percentage has no meaning.

Sources, citation & machine access

Cite the upstream publisher for the values themselves. The reference below credits this compilation and, more usefully, pins the edition you read.

GreenCalculus. (2026). Employee Commuting Emission Factors (MasterBrain v2026.284). Numbers Publishing Pte. Ltd. https://greencalculus.com/factors/employee-commuting-emission-factors/

Cite this factor group

Values change between editions. Quoting the MasterBrain version is what lets a reader resolve the exact number you used. See the change record above for factors in this group that have moved.

For a reference manager, in BibTeX then RIS:

@misc{greencalculus_commuting_2026,
  author       = {{GreenCalculus}},
  title        = {Employee Commuting Emission Factors},
  year         = {2026},
  howpublished = {GreenCalculus},
  publisher    = {Numbers Publishing Pte. Ltd.},
  note         = {MasterBrain v2026.284},
  url          = {https://greencalculus.com/factors/employee-commuting-emission-factors/}
}

TY  - DATA
AU  - GreenCalculus
TI  - Employee Commuting Emission Factors
PY  - 2026
DB  - GreenCalculus
PB  - Numbers Publishing Pte. Ltd.
ET  - MasterBrain v2026.284
UR  - https://greencalculus.com/factors/employee-commuting-emission-factors/
ER  - 

The factors on this page come from 2 sections of the open API, one address each. No key, no signup:

https://greencalculus.com/wp-json/greencalculus/v1/factors/commuting

https://greencalculus.com/wp-json/greencalculus/v1/factors/homeworking

curl -s "https://greencalculus.com/wp-json/greencalculus/v1/factors/commuting?limit=500"

import requests
base = "https://greencalculus.com/wp-json/greencalculus/v1/factors/"
rows = []
for section in ["commuting", "homeworking"]:
    rows += requests.get(base + section, params={"limit": 500}).json()["factors"]
print(len(rows), "rows across", 2, "sections")

Or the same rows as a spreadsheet, with every factor's source, the edition it last changed in, and its own link:

https://greencalculus.com/wp-json/greencalculus/v1/factors-export?page=employee-commuting-emission-factors

Download this table as CSV

Both responses carry an X-GC-Version header, so a consumer can detect a new edition without diffing the payload. The CSV filename carries the edition too, so two downloads months apart do not collide.

All factors

Last changed names the data-layer edition in which a factor last took a new value, reconstructed from every released edition since v2025.13. A dash means the value has not moved since tracking began, which is the answer to "is the figure I used last year still current?".

Common questions