| Property |
To convert from the CUSTOMARY
UNIT |
multiply by |
RECOMMENDED FORM |
| Area |
square inches [in2] |
6.4516 |
square centimetres [cm2] |
| square feet [ft2] |
0.092903 |
square meters [m2] |
| Density |
pounds per cubic foot [lb/ft3] |
16.01846 |
kilograms per cubic meter [kg/m3] |
| grams per cubic centimetre [g/cm3] |
1000 |
kilograms per cubic meter [kg/m3] |
| Energy |
foot pounds-force [ft-lbf] |
1.35582 |
joules [J] |
| meter kilograms-force [m-kgf] |
9.80665 |
joules [J] |
| british thermal units, Int. [Btu] |
1.05506 |
kilojoules [kJ] |
| horsepower hours [hp-h] |
2.68452 |
megajoules [MJ] |
| kilowatt hours [kW-h or kWh] |
3.6 |
megajoules [MJ] |
| meter newtons [m-N] |
1 |
joules [J] |
| Force |
pounds-force [lbf] |
4.44822 |
newtons [N] |
| kilograms-force [kgf] |
9.80665 |
newtons [N] |
| Force per unit
length |
grams-force per millimetre [gf/mm] |
9.80665 |
newtons per meter [N/m] |
| pounds-force per inch [lbf/in] |
0.1751268 |
kilonewtons per meter [kN/m] |
| Length |
angstroms [Ă] |
0.1 |
nanometers [nm] |
| microns |
1 |
micrometers [µm] |
| mils [mil or 0.001 in] |
0.0254 |
millimetres [mm] |
| inches [in] |
25.4 |
millimetres [mm] |
| feet [ft] |
0.3048 |
meters [m] |
| miles [mi] |
1.609 |
kilometres [km] |
| Mass |
ounces [oz] |
28.3495 |
grams [g] |
| pounds [lb] |
0.453592 |
kilograms [kg] |
| tons (= 2000 lb) |
0.907185 |
metric tons (tonne) [t] (=1000
kg) |
| Mass per
unit area |
pounds per ream, 17 x 22 Ð 500 |
3.7597 |
grams per square meter [g/m2] |
| pounds per ream, 25 x 38 Ð 500 |
1.4801 |
grams per square meter [g/m2] |
| pounds per ream, 25 x 40 Ð 500 |
1.4061 |
grams per square meter [g/m2] |
| pounds per 1000 square feet
[lb/1000 ft2] |
4.8824 |
grams per square meter [g/m2] |
| pounds per 3000 square feet
[lb/3000 ft2] |
1.6275 |
grams per square meter [g/m2] |
| pounds per ream, 24 x 36 - 500 |
1.6275 |
grams per square meter [g/m2] |
| Mass per unit
length |
milligrams per 100 meters [mg/100m] |
10 |
micrograms per meter [µg/m] |
| milligrams per 100 meters [mg/100m] |
0.01 |
milligrams per meter [mg/m] |
| Power |
foot pounds-force per second
[ft-lbf/s] |
1.35582 |
watts [W] |
| horsepower [hp] = 550 foot pounds-force
per second |
745.7 |
watts [W] |
| horsepower [hp] |
0.7457 |
kilowatts [kW] |
| Pressure, stress,
force per unit area |
pounds-force per square inch [lbf/in2 or psi] |
6.89477 |
kilopascals [kPa] |
| pounds-force per square foot [lbf/ft2] |
47.8803 |
pascals [Pa] |
| inches of water (60¡F) [in H2O] |
0.24884 |
kilopascals [kPa] |
| inches of mercury (60¡F) [in Hg] |
3.37685 |
kilopascals [kPa] |
| millimetres of mercury (0¼C) [mm
Hg] |
0.133322 |
kilopascals [kPa] |
| atmospheres [atm] |
0.101325 |
megapascals [Mpa] |
| newtons per square meter [N/m2] |
1 |
pascals [Pa] |
| bars [bar] |
100 |
kilopascals [kPa] |
| Speed |
feet per second [ft/s] |
0.3048 |
meters per second [m/s] |