To
Convert |
To |
Multiply
by |
Length |
inches |
millimeters |
25.4 |
inches |
feet |
0.0833 |
feet |
inches |
12* |
feet |
meters |
0.3048 |
feet |
yards |
0.3333 |
feet |
miles
(U.S. statute) |
0.0001894 |
yards |
yards |
3* |
yards |
miles
(U.S. statute) |
0.0005682 |
miles
(U.S. statute) |
feet |
5280* |
miles
(U.S. statute) |
yards |
1760* |
miles
(U.S. statute) |
meters |
1609 |
miles
(U.S. statute) |
nautical
miles |
0.868 |
meters |
feet |
3.281 |
meters |
yards |
1.094 |
meters |
miles
(U.S. statute) |
0.0006214 |
nautical
miles |
miles
(U.S. statute) |
1.152 |
Area |
square
inches |
square
centimeters |
6.452 |
square
inches |
square
feet |
0.006944 |
square
feet |
square
inches |
144* |
square
feet |
square
meters |
0.09290 |
square
meters |
square
feet |
10.76 |
square
miles |
square
yards |
3,097,600* |
square
yards |
square
feet |
9* |
Volume |
cubic
inches |
cubic
centimeters |
16.39 |
cubic
inches |
cubic
feet |
0.0005787 |
cubic
feet |
cubic
inches |
1728* |
cubic
feet |
cubic
meters |
0.02832 |
cubic
feet |
U.S.
gallons |
7.481 |
cubic
meters |
cubic
feet |
35.31 |
liters |
quarts
(U.S. liquid) |
1.057 |
quarts
(U.S. liquid) |
liters |
0.9463 |
U.S.
gallons |
barrels
(petroleum) |
0.02381 |
U.S.
gallons |
cubic
feet |
0.1337 |
U.S.
gallons |
Imperial
gallons |
0.8327 |
barrels
(petroleum) |
U.S.
gallons |
42* |
Imperial
gallons |
U.S.
gallons |
1.201 |
milliliters |
cubic
centimeters |
1* |
Time |
seconds |
minutes |
0.01667 |
seconds |
hours |
0.0002778 |
seconds |
days |
0.00001157 |
minutes |
seconds |
60* |
minutes |
hours |
0.01667 |
minutes |
days |
0.0006944 |
hours |
seconds |
3600* |
hours |
minutes |
60* |
hours |
days |
0.04167 |
Mass
or Weight |
pounds |
kilograms |
0.4536 |
pounds |
short tons |
0.0005* |
pounds |
long tons |
0.0004464 |
pounds |
metric tons |
0.0004536 |
tons (short) |
pounds |
2000* |
tons (metric) |
pounds |
2205 |
tons (long) |
pounds |
2240* |
kilograms |
pounds |
2.205 |
tonnes (metric
tons) |
kilograms |
1000* |
Energy |
calories |
Btu |
0.003968 |
calories |
joules |
4.187 |
Btu (British
Thermal Units) |
calories |
252.0 |
Btu |
joules |
1055 |
joules |
calories |
0.2388 |
joules |
Btu |
0.0009479 |
Velocity |
feet per second |
meters per
second |
0.3048 |
feet per second |
miles per hour |
0.6818 |
feet per second |
knots |
0.5921 |
meters per
second |
feet per second |
3.281 |
meters per
second |
miles per hour |
2.237 |
miles per hour |
meters per
second |
0.4470 |
miles per hour |
feet per second |
1.467 |
knots |
meters per
second |
0.5148 |
knots |
miles per hour |
1.151 |
knots |
feet per second |
1.689 |
Density |
pounds per
cubic foot |
grams per cubic
centimeter |
0.01602 |
grams per cubic
centimeter |
pounds per
cubic foot |
62.42 |
grams per cubic
centimeter |
kilograms per
cubic meter |
1000* |
kilograms per
cubic meter |
grams per cubic
centimeter |
0.001* |
Pressure |
pounds per
square inch absolute (psia) |
kilonewtons per
square meter (kN/m2) |
6.895 |
psia |
atmospheres |
0.0680 |
psia |
inches of water |
27.67 |
psia |
millimeters of
mercury (torr) |
51.72 |
pounds per
square inch gauge (psig) |
psia |
add 14.70 |
millimeters of
mercury (torr) |
psia |
0.01934 |
millimeters of
mercury (torr) |
kN/m2 |
0.1333 |
inches of water |
psia |
0.03614 |
kilograms per
square centimeter |
millimeters of
mercury (torr) |
735.6 |
inches of water |
kN/m2 |
0.2491 |
kilograms per
square centimeter |
atmospheres |
0.9678 |
atmospheres |
kN/m2 |
101.3 |
kilograms per
square centimeter |
psia |
14.22 |
atmospheres |
psia |
14.70 |
bars |
kN/m2 |
100* |
kilonewtons per
square meter |
psia |
0.1450 |
bars |
atmospheres |
0.9869 |
kilonewtons per
square meter |
atmospheres |
0.009869 |
bars |
kilograms per
square centimeter |
1.020 |
Viscosity |
centipoises |
pounds per foot
per second |
0.0006720 |
pounds per foot
per second |
centipoises |
1488 |
centipoises |
poises |
0.01* |
centipoises |
newton seconds
per square meter |
0.001* |
poises |
grams per
centimeter per second |
1* |
grams per
centimeter per second |
poises |
1* |
newton seconds
per square meter |
centipoises |
1000* |
Thermal
Conductivity |
Btu per hour
per foot per oF |
watts per
meter-Kelvin |
1.731 |
Btu per hour
per foot per oF |
kilocalories
per hour per meter per oC |
1.488 |
watts per
meter-Kelvin |
Btu per hour
per foot per oF |
0.5778 |
kilocalories
per hour per meter per oC |
watts per
meter-Kelvin |
1.163 |
kilocalories
per hour per meter per oC |
Btu per hour
per foot per oF |
0.6720 |
Heat
Capacity |
Btu per pound
per oF |
calories per
gram per oC |
1* |
Btu per pound
per oF |
joules per
kilogram-Kelvin |
4187 |
joules per
kilogram-Kelvin |
Btu per pound
per oF |
0.0002388 |
calories per
gram per oC |
Btu per pound
per oF |
1* |
Concentration
(in water solution) |
parts per
million (ppm) |
milligrams per
liter |
1* |
milligrams per
liter |
ppm |
1* |
milligrams per
cubic meter |
grams per cubic
centimeter |
1 X 10-9 |
grams per cubic
centimeter |
milligrams per
cubic meter |
1 X 109 |
grams per cubic
centimeter |
pounds per
cubic foot |
62.42 |
pounds per
cubic foot |
grams per cubic
centimeter |
0.01602 |
Temperature |
degrees Kelvin
(oK) |
degrees Rankine
(oR) |
1.8* |
degrees Rankine
(oR) |
degrees Kelvin
(oK) |
0.5556 |
degrees
centigrade (oC) |
degrees
Fahrenheit (oF) |
first multiply
by 1.8, then add 32 |
degrees
Fahrenheit (oF) |
degrees
centigrade (oC) |
first subtract
32, then multiply by 0.5556 |
degrees
centigrade (oC) |
degrees Kelvin
(oK) |
add 273.2 |
degrees
Fahrenheit (oF) |
degrees Rankine
(oR) |
add 459.7 |
Flow |
cubic feet per
second |
U.S. gallons
per minute |
448.9 |
U.S. gallons
per minute |
cubic feet per
second |
0.002228 |