English to SI Conversion Chart

G R A N T

P R I D E C O

ENGLISH TO SI CONVERSION CHART Values may be converted from English units to SI units, and vice versa, using the table below. To convert a value from English units to SI units, locate the appropriate English unit in column 2 of the table, and multiply the value by the factor in column 3 to obtain the equivalent desired SI units listed in column 4. Similarly, to convert a value from SI units to English units, locate the appropriate SI unit in column 4, and multiply the value by the factor in column 5 to obtain the equivalent desired English unit listed in column 6.

English



Quantity

Factor SI Unit

English to SI

Factor

English

Unit SI to English

Unit



Length

yards

9.144 E-01

meters

1.093613 E+00

yards





feet

3.048 E-01

meters

3.280840 E+00

feet





feet

3.048 E+01

centimeters

3.280840 E-02

feet





inches

2.54 E+01

millimeters

3.937008 E-02

inches





inches

2.54 E +00

centimeters

3.937008 E-01

inches



Area

sq feet

9.290304 E-02

sq meters

1.076391 E+01

sq feet





sq feet

9.290304 E+02

sq centimeters

1.076391 E-03

sq feet





sq inches

6.4516 E+02

sq millimeters

1.550003 E-03

sq inches





sq inches

6.4516 E+00

sq centimeters

1.550003 E-01

sq inches



Volume

barrels

1.589873 E-01

cu meters

6.289811 E+00

barrels





cu feet

2.831685 E-02

cu meters

3.531466 E+01

cu feet





cu feet

2.831685 E+01

liters

3.531466 E+01

cu feet





UK gallons

4.546092 E-03

cu meters

2.199692 E+02

UK gallons





UK gallons

4.546092 E+00

liters

2.199692 E-01

UK gallons





US gallons

3.785412 E-03

cu meters

2.641720 E+02

US gallons





US gallons

3.785412 E+00

liters

2.641720 E-01

US gallons





cu inches

1.638706 E+01

cu centimeters

6.102376 E-02

cu inches



Volume/length

US gal/ft

1.241933 E-02

cu meters/meter

8.051964 E+01

US gal/ft



Mass

UK ton(lg)

1.016047 E+00

megagrams

9.842064 E-01

UK ton (lg)





UK ton (sht)

9.071847 E-01

megagrams

1.102311 E+00

US ton (sht)





UK ton

5.080235 E+01

kilograms

1.968413 E-02

UK ton





lbm

kilograms



Temperature

Fahrenheit

4.535924 E-01 (oF-32)/1.8

Celsius

2.204622 E+00 (oC)(1.8)+32

fahrenheit



Pressure

lbf/sq inch

6.894757 E-03

megapascals

1.450377 E+02

lbf/sq inch





lbf/sq inch

6.894757 E+00

kilopascals

1.450377 E-01

lbf/sq inch





lbf/sq inch

6.894757 E-02

bar

1.450377 E+01

lbf/sq inch





lbf/sq foot

4.788025 E-02

kilopascals

2.088543 E+01

lbf/sq foot



Pressure Drop

lbf/sq in/ft

2.262059 E+01

kilopascals/meter

4.420751 E-02

lbf/sq in/ft

lbm





lbf/sq in/100ft

2.262059 E-01

kilopascals/meter

4.420751 E+00

lbf/sq in/100ft



Density

lbm/US gallon

1.198264 E+02

kilograms/cu meter

8.345406 E-03

lbm US gallon





lbm/UK gallon

9.977633 E+01

kilograms/cu meter

1.002242 E-02

lbm UK gallon





lbm/cu ft

1.601846 E+01

kilograms/cu meter

6.242797 E-02

lbm/cu ft foot-pounds



Energy

foot-pounds

1.355818 E+00

joules

7.375621 E-01



Angular velocity

rev/min

1.047198 E-01

radians/second

9.549292 E+00

rev/min



Force

pounds force

4.448222 E+00

newtons

2.248089 E-01

pounds force



Torque

foot-pounds

1.355818 E+00

newton-meters

7.3756 E-01

foot-pounds



Moment section

inches

4.162314 E+01

centimeters

2.402510 E-02

inches

Section modulus

cu inches

1.628706 E+01

cu centimeters

6.139844 E-02

cu inches



Stress

lbf/sq inch

6.894757 E-03

megapascals

1.450377 E+02

lbf/sq inch



Mass/length

lbm/foot

1.488164 E+00

kilograms/meter

6.719689 E-01

lbm/foot

While every effort has been made to insure the accuracy of the tables herein, this material is presented as a reference guide only. The technical information contained herein should not be construed as a recommendation. Grant Prideco cannot assume responsibility for the results obtained through the use of this material. No expressed or implied warranty is intended.

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© Grant Prideco. All rights reserved. December 2003