Abbreviations and Letter Symbols
249
- in—inch
- in²—square inch
- in³—cubic inch
- in/h—inch per hour
- inH₂O—conventional inch of water
- inHg—conventional inch of mercury
- in-lb—inch-pound
- in/s—inch per second
- J—joule
- J/K—joule per kelvin
- K—kayser
- K—kelvin (use without degree symbol)
- k—kilo (prefix, 1,000)
- k—thousand (7k=7,000)
- kc—kilocycle; see also kHz (kilohertz), kilocycles per second
- kcal—kilocalory
- keV—kiloelectronvolt
- kG—kilogauss
- kg—kilogram
- kgf—kilogram-force
- kHz—kilohertz (kilocycles per second)
- kL—kiloliter
- klbf—kilopound-force
- km—kilometer
- km²—square kilometer
- km³—cubic kilometer
- km/h—kilometer per hour
- kn—knot (speed)
- kfl—kilohm
- kt—kiloton; carat
- kV—kilovolt
- kVA—kilovoltampere
- kvar—kilovar
- kW—kilowatt
- kWh—kilowatthour
- L—lambert
- L—liter
- lb—pound
- lb ap—apothecary pound
- lb—avdp, avoirdupois pound
- lbf—pound-force
- lbf/ft—pound-force foot
- lbf/ft²—pound-force per square foot
- lbf/ft³—pound-force per cubic foot
- lbf/in²—pound-force per square inch (see psi)
- lb/ft—pound per foot
- lb/ft²—pound per square foot
- lb/ft³—pound per cubic foot
- let—long calcined ton
- ldt—long dry ton
- LF—low frequency
- lin ft—linear foot
- l/m—lines per minute
- lm—lumen
- lm/ft²—lumen per square foot
- lm/m²—lumen per square meter
- lms—lumen second
- lm/W—lumen per watt
- l/s—lines per second
- L/s—liter per second
- lx—lux
- M—mega (prefix, 1 million)
- M—million (3M=3 million)
- m—meter
- m—milli (prefix, one-thousandth)
- Ml—monetary aggregate
- m²—square meter
- m³—cubic meter
- μ—micro (prefix, one-millionth)
- μm—micrometer
- mA—milliampere
- μA—microampere
- MB—megabyte
- mbar—millibar
- μbar—microbar
- Mc—megacycle; see also MHz (megahertz), megacycles per second
- mc—millicycle; see also mHz (millihertz), millicycles per second
- mD—millidarcy
- meq—milliquivalent
- MeV—megaelectronvolts
- mF—millifarad
- μF—microfarad
