Unit Conversion Factors

Note:  En = 10n, e.g., E5=105, E-5=10-5.
 

Force

®

pdl

dyn

N

lbf

kg f

kN

pdl

1

138 30

0.138 3

0.031 1

0.014 1

1.383E-4

dyn

7.233E-5

1

1 E-5

2.24 8E-6

1.02 0E-6

1 E-9

N

7.233

1 E5

1

0.224 8

0.102 0

1 E-3

lbf

32.174

4.448E5

4.448

1

0.453 6

4.448E-3

kgf

70.93

9.807E5

9.807

2.2046

1

9.807E-3

kN

7 233

1 E8

1000

224.8

102.0

1

Power

 

Btu/s

ft lbf/s

Cal/s

hp

kW

kgm/s

Btu/s

1

778.2

0.252

1.415

1.055

107.6

ft lbf/s

1.285E-3

1

3.238E-q

1.818E-3

1.356E-3

0.1383

Cal/s

3.968

3 088

1

5.615

4.186

427

hp

0.706 7

550

0.178 1

1

0.745 7

76.0401

kW

0.948

737.562

0.238 9

1.341 02

1

101.9716

kgm/s

9.294E-3

7.375 6

2.342E-3

1.315E-2 I

9.807E-3 I

1

Moment of Force (torque)

 

pdl ft

lbf in

N m

lbf ft

kgf m

pdl ft

1

0.373 0

0.04214

0.03108

4.297E-3

Ibf in

2.681

1

0.113 0

0.083 33

0.011 52

N m

23.73

8.851

1

0.737 6

0.102 0

lbf ft

32.17

12

1.356

1

0.138 3

kgf m

232.7

86.80

9.807

7.233

1

INm=l07dyncm

Stress

 

dyn/cm2

N/m2

pdl/ft2

lbf/ft2

kPa

lbf/in2

kgf/cm2

N/mm2

hbar

dyn/cm2

1

0.100

0.067 2

2.089E-3

1 E-4

1.450E-5

1.020E-6

1 E-7

1 E-8

N/m2

10

1

0.672 0

0.020 89

1 E-3

1.450E-4

1.020E-5

1 E-6

1 E-7

pdl/ft2

14.88

1.488

1

0.031 08

1.488E-3

2.15 8E-4

1.518E-5

1.488E-6

1.488E-7

Ibf/ft2

478.8

47.88

32.17

1

0.04788

6.944E-3

4.882E-4

4.788E-5

4.788E-6

kPa

1 E4

1 000

672.0

20.89

1

0.145 0

0.010 20

1 E-3

1 E-4

Ibf/in2

6.895E4

6 895

4 633

144

6.895

1

0.070 31

6.895E-3

6.895E-4

kgf/cm2

9.807E5

9.807E4

6.590E4

2 048

98.07

14.22

1

0.098 07

9.807E-3

N/mm2

1 E7

1 E6

6.720E5

2.089E4

1 000

145.0

10.20

1

0.100 0

hbar

1 E8

1 E7

6.720E6

2.089E5

10000

1450

102.0

10

1

  * 1 N/mmz = 1 MN/m2 = I MPa
  1 N/m2 = Pa, I kPa = 10 3 Pa

Second Moment of Area (moment of inertia)

 

mm4

cm4

ins

ft4

m4

mm4

1

1 E-4

2.4025E-6

1.159E-10

1 E-12

cm4

10 000

1

0.024 025

1.159E-6

1 E-8

inq

416 231

41.623

1

4.822 5E-5

4.162 3E-7

ft4

8.631E9

863 097

20 736

1

8.6310E-3

m4

1 E12

1 E8

2.4025E6

115.86

1