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Metric/English Conversion Factors - (TxDOT)

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Metric/English Conversion Factors

Application

Metric Symbol

To Convert From

To

Multiply Metric Unit by Factor

Tech Corres

Comptr Appl

Metric Unit

English Unit
Length mm   milimeter inch 0.03937
m M meter foot 3.28084
m M meter yard 1.09361
km KM kilometer mile (international) 0.62137
Area mm2   square milimeters square inch 0.00155
m2 M2 square meters square foot 10.76422
m2 M2 square meters square yard 1.19599
ha HA hectare (10,000 m2) acre 2.47105
km2   square kilometers square mile (U.S. statute) 0.38610
Volume mL   mililiter (1 mm3) ounce (U.S. fluid) 0.03381
L L liter (mm3) quart (U.S. liquid) 1.05669
L L liter (mm3) gallon (U.S. liquid) 0.26417
kL KL 1,000 liter 1,000 gallon 0.26417
m3 M3 cubic meter cubic foot 35.31466
m3 M3 cubic meter cubic yard 1.30795
m3 M3 cubic meter acre-foot 0.00081
Discharge L/min   liter per minute gallon per minute 0.26417
m3/s   cubic meter per sec cubic foot per sec 35.31466
Force per unit
area, pressure, stress		 kPa   kilopascal pound-force per square inch 0.14504
Pa   pascal pound-force per square foot 0.02089
MPa   megapascal kip per square inch 0.14504
kPa   kilopascal kip per square foot 0.02089
Volume per unit
time		 m3.h M3H cubic meter hour cubic yard hour 1.30800
Force N   newton pound-force 0.22481
kN   kilonewton kip (1,000 lbf) 0.22481
Gravitational
Constant		 m/s2   9.8066 meters per second squared 32.174 feet per second squared N/A
Mass g   gram ounce 0.03527
kg KG kilogram pound 2.20462
Mg MG megagram ton (2,000 lbs) 1.10231
Mass density kg/m3   kilogram per cubic meter pound per cubic foot 0.06243
kg/m3   kilogram per cubic meter pound per cubic yard 1.68556
Mg/m3   megagram per cubic meter ton per cubic yard 0.84278
Rate of
application		 L/m2   liter per square meter gallon per square foot 0.02431
L/m2   liter per square meter gallon per square yard 0.22088
L/ha   liter per hectare gallon per acre 0.10691
Temperature °C   degree Celsius Fahrenheit (Tc x 1.8) +32
Torque N.m   newton meter pound-force inch 8.85075
N.m   newton meter pound-force foot 0.73756
kN.m KNM kilonewton meter pound-force foot 737.56212
Velocity m/s   meter per second feet per second 3.28084
km/h   kilometer per hour miles per hour 0.62137
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Updated October 08, 2003
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