A.7. METRIC (SI) CONVERSION FACTORS
533
Table A4: Conversion Factors - Concluded
‘Exact Conversion Value
^Technically density-to-specific weight conversion
Multiply
By
To Obtain
Force/Volume (Specific Weight)
pound-force per cubic inch ..
271.447
kilonewtons per cubic meter
pound-force per cubic foot ..
157.087
... newtons per cubic meter
kilograms per cubic meter
9.806 65
... newtons per cubic meter
Bending Moment or Torque
inch-pounds-force ................
0.112 985 .................... newton meters
foot-pounds-force..................
1.355 82
.................... newton meters
Velocity
feet per second ......................
0.304 8 *
.................meters per second
miles per hour (statute) ....
0.447 04 *
.................meters per second
miles per hour (statute) ....
1.609 344 *
............ kilometers per hour
knots (international) ...........
0.514 444 .................meters per second
knots (international) ...........
1.852 *
............ kilometers per hour
Acceleration
feet per second squared.......
0.304 8 *
. meters per second squared
Volume/Time (Discharge)
cubic feet per second ...........
0.028 317 *
cubic meters per second
cubic yards per year .............
0.764 555
cubic meters per year
Energy or Work
foot-pounds-force..................
1.355 82
.................................... joules
kilowatthours ........................
3.60 *
......................... megajoules
British thermal units (Btu) . 1 055.06
.................................... joules
Power
horsepower .............................
745.700
.................................. watts
Btu per hour .........................
0.293 071
.............................. watts
foot-pound-force per second
1.355 82
............................ watts