Important Dates

  • October 17, 2019 - First FRN Published inviting public comment on deprecation of the U.S. survey foot after 2022.
  • December 2, 2019 - Comment period deadline. Submit all comments electronically by this date.
  • June 30, 2020 - Final Rule - A second FRN will formally announce the change will be published before this date and will describe the details and the change process.
  • December 31, 2022 - The U.S. survey foot will be deemed obsolete and superseded by the foot (formerly known as the international foot) equal to 0.304 8 meter exactly for all applications.


For information on standards development and maintenance of the U.S. survey foot, please contact:
For technical and historical information on usage of the foot, please contact: