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

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.