This is the carbon footprint calculator about the gas, energy including electricity, the vehicle, and home appliance in Japan.

Which is large for 100km of the railway and 100 hours of iMac 24inch?

The kind of the energy etc. that can be calculated is as follows.

【 utility gas 】
National average
Tokyo Gas Co., Ltd. (general)
Tokyo Gas Co., Ltd. (Gunma and Yamanashi)
Osaka Gas Co., Ltd.
Toho Gas Co., Ltd.
Saibu Gas Co., Ltd.

【 electric power 】
Hokkaido Electric Power Co., Inc.
Tohoku Electric Power Co., Inc.
Tokyo Electric Power Company
Hokuriku Electric Power Company
Chubu Electric Power Co., Inc.
Kansai Electric Power Company
Chugoku Electric Power Co., Inc.
Shikoku Electric Power Co., Inc.
Kyushu Electric Power Co., Inc.
Okinawa Electric Power Company,
Incorporated all power supply average
Thermal power average

【 LPG and others 】
LPG
Propane
Butane

【 liquid fuel 】
Gasoline
Kerosene
light oil
grade A crude oil
Bunker C

【 drainage 】
Water supply
Drainage

【 vehicle 】
Railway Bus Airplane Private passenger car

【 consumer electronic 】
Television (liquid crystal types)
Refrigerator (200-500L)
Air conditioner (2.0-5.0kW: Air-conditioning)
Fluorescent lamp
Electric toilet seat
Desktop PC (iMac 21.5inch etc.)
Noteook PC (MacBookPro 13inch etc.)

Moreover, the source of the unit requirement can be confirmed with webVIew.

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Please check out!
http://www.youtube.com/watch?v=wSxhc7Z90EA
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In the inquiry, even the following are
SHLConsulting
http://d.hatena.ne.jp/SHL/
co2calculator1110@gmail.com