Conversion for weight and/or mass

Conversions for Weight and/or Mass

Weight Units	Conversion	Abbreviation Meaning
mg	1 mg = 0.001 g	milligram
gr	1 gr = 64.8 mg	grain
kt	1 kt = 0.2 g / 1/24 carat	carat
g	1 g = 1,000 mg	gram
oz	1 oz = 28.35 g	ounce
oz t	1 oz t = 31.103 g / 480 gr	troy ounce, precious weight
ons	1 ons = 100 g	ounce
lb t	1 lb t = 0.37324 kg / 12 oz t	troy pound
lb	1 lb = 454.6 g	pound
pond	1 pound = 500 g / 0.5 kg	pound
kg	1 kg = 1,000 g	kilogram, SI unit
st	1 st = 14 lb / 6.35 kg	stone
t	1 t = 1,000 kg	ton

Pressure Units	Conversion	Abbreviation Meaning
Pa	1 Pa = 1 · 10-5 bar	pascal - 1 Pa = 1 N/m2 = 1 kg/(m·s2)
psf	1 psf = 47.88 Pa	pound per square foot (also lb/sq ft)
hPa	1 hPa = 100 Pa / 1 mbar	hectopascal
torr	1 torr = 133.322 Pa	mmHg or millimeter mercury column
mH2O	1 mH2O = 9806.38 Pa	meter water column, also indicated as mWk, sometimes cmH2O is used, 100 times smaller
psi	1 psi = 6894.76 Pa	pounds per square inch (also lb/sq in)
bar	1 bar = 100,000 Pa / 0.98692 atm / 1 bar = 14.50377 psi	bar
atm	1 atm = 1.01325 bar / 760 torr	atmosphere