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General Data > Mass, density, force and pressure units and equivalents

Mass

Unit Name Symbol SI Equivalent
a.u. of mass (electron rest mass)
m 0 , m e 9.10938x10-31 kg
assay ton
  2.9167x10-2 kg
atomic unit of mass (1H)
u, uma, Da(1H), AMU 1.67353x10-27 kg
atomic unit of mass (12C)
u, uma, Da(12C), AMU 1.66054x10-27 kg
atomic unit of mass (16O)
u, uma, Da(16O), AMU 1.66001x10-27 kg
attogram
ag 1x10-21 kg
avogram
  1.66036x10-24 kg
bag (UK, cement)
  42.6377 kg
carat (metric)
ct. 2x10-4 kg
carat (troy)
ct (troy) 2.05197x10-4 kg
cental
cH, cwt 45.3592 kg
centigram
cg 1x10-5 kg
dalton (atomic unit of mass)
u, uma, Da 1.66054x10-27 kg
decagram
dag 1x10-2 kg
decigram
dg 1x10-4 kg
dram (troy)
dr (troy) 3.88793x10-3 kg
dram or drachm (apothecary)
dr (ap.), dr (apoth.) 3.88793x10-3 kg
dram or drachm (avoirdupois)
dr (av.), dr (avdp) 1.77185x10-3 kg
electron rest mass (a.u. of mass)
m 0, m e 9.10939x10-31 kg
exagram
Eg 1x1015 kg
femtogram
fg 1x10-18 kg
gamma (mass)
g 1x10-9 kg
geepound (slug)
slug 14.5939 kg
gigagram
Gg 1x106 kg
grain (apothecary)
gr (apoth.), gr (ap.) 6.47989x10-5 kg
grain (avoirdupois)
gr (avdp.), gr (av.) 6.47989x10-5 kg
grain (troy)
gr (troy) 6.47989x10-5 kg
gram
g 1x10-3 kg
hectogram
hg 0.1 kg
hundredweight (gross or long)
cH, cwt, lg cwt 50.8023 kg

Density

Unit Name Symbol SI Equivalent
gram per cubic centimeter
g/cm3 1000 kg/m3
gram per cubic meter
g/m3 1x10-3 kg/m3
gram per liter
g/l 1 kg/m3
kilogram per cubic decimeter
kg/dm3 1000 kg/m3
kilogram per cubic meter
kg/m3 1 kg/m3
kilogram per liter
kg/l 1000 kg/m3
ounce (av.) per cubic foot
oz (av.)/ft3 1.00115 kg/m3
ounce (av.) per cubic inch
oz (av.)/in3 1729.99 kg/m3
pound mass per cubic foot
lbm/ft3 16.0185 kg/m3
pound mass per cubic inch
lbm/in3 2.76799x104 kg/m3
pound mass per cubic yard
lbm/yd3 0.593276 kg/m3
pound mass per gallon (UK)
lbm/gal (UK) 99.7763 kg/m3
pound mass per gallon (US, liq.)
lbm/gal (US, liq.) 119.826 kg/m3
slug per cubic foot
slug/ft3 515.379 kg/m3
slug per cubic inch
slug/in3 8.90575x10m5 kg/m3
slug per cubic yard
slug/yd3 19.0881 kg/m3
specific gravity
  1000 kg/m3

Force

Unit Name Symbol SI Equivalent
a.u. of force
a.u. 8.23873x10-8 N
crinal
crinal 0.1 N
dyne
dyn 1x10-5 N
gram force
gf 9.80665x10-3 N
joule per centimeter
J/cm 100 N
kilogram force
kgf, kgp 9.80665 N
kilogram meter per square second
kg-m/s2 1 N
kilopound force (kip force)
kipf 4448.22 N
newton
N 1 N
ounce force (av.)
ozf (av.) 0.278014 N
pound force
lbf (av.), lbf 4.44822 N
pound force foot per inch
lbf-ft/in 53.3786 N
poundal
pdl 0.138255 N
slug foot per square second
slug-ft/s2 4.44822 N
slug force
  143.117 N
square foot inch of mercury (0°C)
ft2-inHg (0 °C) 314.605 N
square foot inch of mercury (15.56°C)
ft2-inHg (15.56 °C) 313.751 N
ton force (long)
  9964.02 N
ton force (metric)
  9806.65 N
ton force (short)
  8896.44 N

Pressure

Unit Name Symbol SI Equivalent
atmosphere (metric)
at 9.80665x104 Pa
atmosphere (standard)
atm 1.01325x103 Pa
bar
bar 1x103 Pa
barad
barad 0.1 Pa
barye
  0.1 Pa
centiHg (0°C)
  1333.22 Pa
centimeter of mercury (0°C)
cmHg (0 °C) 1333.22 Pa
centimeter of water (4°C)
cmH2O 98.0638 Pa
dyne per square centimeter
dyn/cm2 0.1 Pa
foot of water (4°C)
ft H2O 2988.98 Pa
gigapascal
GPa 1x103 Pa
hectopascal
hPa 100 Pa
inch of mercury (0°C)
inHg (0 °C) 3386.38 Pa
inch of mercury (15.56°C)
inHg (15.56 °C) 3377.18 Pa
inch of water (15.56°C)
inH 2O (15.56 °C) 248.845 Pa
inch of water (4°C)
inH 2O (4 °C) 249.082 Pa
kilogram force per square centimeter
kgf/cm2 9.80665x104 Pa
kilogram force per square decimeter
kgf/dm2 980.665 Pa
kilogram force per square meter
kgf/m2 9.80665 Pa
kilogram force per square millimeter
kgf/mm2 9.80665x106 Pa
kilopascal
kPa 1000 Pa
kilopound force per square inch
kip/in2, ksi, KSI 6.89476x106 Pa
megapascal
MPa 1x106 Pa
meter of water (15.56°C)
mH2O, mCE (15.56 °C) 9797.06 Pa
meter of water (4°C)
mH2O, mCE (4 °C) 9806.38 Pa
microbar (barye, barrie)
µbar 0.1 Pa
micron of mercury (millitorr)
µHg (0 °C) 0.133322 Pa
millibar
mbar 100 Pa
millimeter of mercury (0°C)
mmHg, torr, Torr (0 °C) 133.322 Pa
millimeter of water (15.56°C)
mmH2O, mmCE (15.56 °C) 9.79706 Pa