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Calculator for Scope 1 and Scope 2 Greenhouse Gas Emissions of a Corporation

You can create an account or log in to store your inputs and calculation results. You can also proceed as guest but your inputs and the calculation results will not be saved.
Location of business operations Please indicate your location of business operations. You can select more than 1 location.

This calculator is developed by The Hong Kong University of Science and Technology (HKUST) in partnership with the CASG which aims to assist corporates to assess or report their Scopes 1 and 2 greenhouse gas (GHG) emissions based on the levels of actual activities.

Please note that this calculator only covers the most common sources of GHG emissions, there may be other sources of GHG emissions based on the operations and activities of a corporation. Please refer to User Guide for details of the methodology, coverage and data used.

HKUST and the CASG aim to provide you with a free GHG emission calculator with clearly disclosed methodology. However, under no circumstances shall HKUST and the CASG be liable for any direct, indirect, special or consequential losses or damages that is claimed to have resulted from the use of this calculator, its data or its methodology, or from the conduct of any user. Please also read the disclaimer of this website.

Please note that the emission factors used in this calculator are sourced from references that may not be applicable to all geographic locations. The user is encouraged to use more suitable emission factors when they are available.

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