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Archive / FAA Aviation Weather Handbook / FAA Aviation Weather Handbook: Appendix F — Units of Measurement

Appendix F — Units of Measurement

Appendix F — Units of Measurement

FAA-H-8083-28B (2026)

Appendix F, Units of Measurement F-1

Appendix F Units of Measurement

°C or C degrees Celsius or Celsius

cm centimeter

dBZ decibels of Z

°F or F degrees Fahrenheit or Fahrenheit

fpm feet per minute

ft foot

g gram

hPa hectopascal

hr hour

in inch

inHg inches of mercury

J joule

J/g joules per gram

J g-1 K-1 joules per gram-Kelvin

J/kg joules per kilogram

K Kelvin

kg kilogram

kg/m kilogram per meter

kg/m3 kilogram per cubic meter

km kilometer

km/h kilometers per hour

kt knot

kW kilowatt

lb pound

m meter

m3 cubic meter

Appendix F, Units of Measurement F-2

mb or mbar millibar

mg/m3 milligrams per cubic meter

MHz megahertz

mi mile

min minutes

mph miles per hour

m/s meters per second

nm nanometer

NM nautical mile

psi pounds per square inch

s or sec second

SM statute mile

W watt

W m-1 K-1 watt per meter-Kelvin

Note: The units of measurement shown above are occasionally listed in uppercase and/or lowercase in

figures, tables, and examples throughout the document.

Original source PDFPublished from pages 510–511 of the recorded source chapter.
Open source PDF ↗