Here you can find links to various guides, tools and other organisations that are focused on carbon footprint. Product carbon footprint standard:

ISO 14067

To view ISO 14067 status, please click here

WRI/WBCSD GHG Protocol Product Standard

To view the the new WRI/WBCSD GHG Protocol Product Standard please click here

Publicly Available Specification 2050

Download the PAS2050 from the BSI website

Product carbon footprint scheme:

UK

The U.S

Canada

EU

Japan

Korea

Thailand

Australia

Product carbon footprint tool:

Umberto for carbon footprint

Footprint Expert