Free Calculation Factors

License for general use. Calculation factors download includes:

  • 2018 national yields, world yields, and yield factors for all countries by land type
  • Equivalence factors for all land types

The data download will require you to agree with basic usage terms, as indicated in the click-through process.

For more extensive data requests or any questions about the license terms, please contact

License Details

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Should you have any questions about this license, or if you would like to use more complete data sets, please contact us.

To receive a download link, please complete the following form. All fields on this form with an asterisk (*) are needed to submit.