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7 CFR § 51.714Chapter I

Metric conversion table

Primary source

Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.

Full Text

Inches Millimeters (mm) 1⁄4 equals 6.4 5⁄16 equals 7.9 3⁄8 equals 9.5 1⁄2 equals 12.7 5⁄8 equals 15.9 3⁄4 equals 19.1 7⁄8 equals 22.2 1 equals 25.4 11⁄4 equals 31.8 23⁄16 equals 55.6 24⁄16 equals 57.2 27⁄16 equals 61.9 28⁄16 equals 63.5 29⁄16 equals 65.1 211⁄16 equals 68.3 212⁄16 equals 69.9 215⁄16 equals 74.6 31⁄16 equals 77.8 33⁄16 equals 81 35⁄16 equals 84.1 37⁄16 equals 87.3 39⁄16 equals 90.5 313⁄16 equals 96.8

eCFR data current as of: November 6, 2026

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.