HRS §486-102
Two official systems for measuring in Hawaii
Hawaii officially recognizes both the U.S. customary system and the metric system for all measurements. The state follows technical standards for measuring devices and units as set by the National Institute of Standards and Technology, with any changes approved by the board.
everyone
The statute, as written — Systems of measurement
The United States customary system of weights and measures and the metric system of measurement are jointly recognized, and either one or both shall be used for all measurement purposes in the State. The definitions of basic units of measure, the tables of measure and measure equivalents, the specifications, tolerances and other technical requirements for measuring devices, as published by the National Institute of Standards and Technology and adopted, or modified and adopted by the board, together with the measurement standards provided for herein, are recognized and shall govern measurement standards, measuring equipment and measuring transactions in the State.
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