단위환산표(공학)

  단위 환산표 (공학용)                                   



(1) 길 이

 

(2) 면 적

cm

m

in

ft

1

0.01

0.3937

0.03281

100

1

39.37

3.281

2.540

0.0254

1

0.08333

30.48

0.3048

12

1

 

 

cm²

in²

ft²

1

0.0001

0.155

0.001076

1×10⁴

1

1550

10.76

6.452

0.000645

1

0.006944

929.0

0.09290

144

1

 


(3) 체 적

 

(4) 두 량(斗量)

cm³

in³

ft³

1

1E-6

0.06102

0.00003531

1E6

1

61020

35.31

16.39

0.00001639

1

0.0005787

28320

0.02832

1728

1

 

 

gal(UK)

gal(US)

1

220.0

264.2

1000

0.004546

1

1.201

4.546

0.003785

0.8327

1

3.785

0.001

0.2200

0.2642

1

 (注)1gal(US)=231in³,  1ft³=7.48 gal(US)


(5) 질 량

 

(6) 밀 도

kg

t

lb

ton

sh tn

1

0.001

2.20462

0.0009842

0.0011023

1000

1

2204.62

0.9842

1.1023

0.45359

0.00045359

1

0.0004464

0.00055

1016.05

1.01605

2240

1

1.12

907.185

0.907185

2000

0.89286

1

 (注) t:톤, ton: 영국톤(long ton), sh tn :미국톤(short ton)

g/cm³

kg/m³

lb/in³

lb/ft³

1

1000

0.03613

62.43

0.001

1

0.00003613

0.06243

27.68

27680

1

1728

0.01602

16.02

0.0005787

1

 (注) 1g/cm³= 1t/m³

 


(7) 힘

   

N

dyn

kgf

lbf

pdl

1

1E5

0.101972

0.2248

7.233

1E-5

1

1.01972E-6

2.248E-6

7.233E-5

9.80665

9.80665E5

1

2.205

70.93

4.44822

4.44822E5

0.4536

1

32.17

0.138255

1.38255E4

0.01410

0.03108

1

 (注) 1 dyn=1E-5N, 1 pdl(파운달) = 1ft·lb/s²


(8) 압 력

kgf/cm²

bar

Pa

atm

mH₂O

mHg

lbf/in²

1

0.980665

0.980665E5

0.9678

10.000

0.7356

14.22

1.0197

1

1E5

0.9869

10.197

0.7501

14.50

1.0197E-5

1E-5

1

0.9869E-5

1.0197E-4

7.501E-6

1.450E-4

1.0332

1.01325

1.01325E5

1

10.33

0.760

14.70

0.10000

0.09806

9.80665E3

0.09678

1

0.07355

1.422

1.3595

1.3332

1.3332E5

1.3158

13.60

1

19.34

0.07031

0.06895

6.895E3

0.06805

0.7031

0.05171

1

 (注) 1 Pa = 1 N/m², 1 bar= 1E5 Pa, 1lbf/in²= 1 psi, 1 Pa = 7.5 E-3 torr

 (注) 1ksi = 1000psi  (英 ksi : kips per square inch )

 


(9) 응 력

 

(10) 속 도

kgf/cm²

kgf/mm²

Pa

N/mm²

lbf/ft²

1

1E-2

0.980665E5

0.0980665

2048

1E2

1

0.980665E7

9.80665

2.048E5

1.0197E-5

1.0197E-7

1

1E-6

0.02089

10.1972

0.101972

1E6

1

2.089E4

0.0004882

4.882E-6

47.86

4.788E-5

1

 (注) 1 N/mm²= 1MPa

 

m/s

km/h

kn(미터법)

ft/s

mile/h

1

3.6

1.944

3.281

2.237

0.2778

1

0.5400

0.9113

0.6214

0.5144

1.852

1

1.688

1.151

0.3048

1.097

0.5925

1

0.6818

0.4470

1.609

0.8690

1.467

1

  (注) kn : 노트, 미터법 1 노트= 1852 m/h


(11) 점 도

 

cP

P

Pa·s

kgf·s/m²

lbf·s/in²

1

0.01

0.001

0.00010197

1.449E-7

100

1

0.1

0.0101973

1.449E-5

1000

10

1

0.101973

1.449E-4

9806.65

98.0665

9.80665

1

0.001422

6.9E6

6.9E4

6.9E3

7.03E2

1

(注) 1P= 1dyn·s/cm²= 1g/cm·s, 1Pa·s= 1N·s/m², 1cP=1mPa·s, 1lbf·s/in²= 1Reyn =6.9E6cP

 


(12) 동점도

 

 (13) 각속도

cSt

St

m²/s

ft²/s

1

1E-2

1E-6

0.00001076

100

1

1E-4

0.001076

1E6

1E4

1

10.76

92900

929.0

0.09290

1

 (注) 1 St = 1 cm²/s 

 

rpm

rad/s

1

0.1047

9.549

1

 (注) 1 rad=57.296。, rpm= r/min

 


(14) 체적유량

ℓ/s

ℓ/min

m³/s

m³/min

m³/h

ft³/s

1

60

1E-3

0.06

3600

0.03532

0.01666

1

1.66666E-5

1E-3

6E-2

0.00059

1E3

6E4

1

60

3600

35.31

1.66666E1

1E3

1.66666E-2

1

60

0.5885

2.77777E-4

1.66666E1

2.77777E-4

1.66666E-2

1

0.00981

2.832E1

1.69833E3

2.832E-2

1.69833

101.9

1

 


(15) 일,에너지 및 열량

J

kgf·m

kW·h

kcal

ft·lbf

Btu

1

0.10197

2.778E-7

2.389E-4

0.7376

9.480E-4

9.807

1

2.724E-6

2.343E-3

7.233

9.297E-3

3.6E6

3.671E5

1

860.0

2.655E6

3413

4186

426.9

1.163E-3

1

3087

3.968

1.356

0.1383

3.766E-7

3.239E-4

1

1.285E-3

1055

107.6

2.930E-4

0.2520

778.0

1

 (注) 1J=1W·s, 1kgf·m=9.80665J, 1 W·h = 3600 W·s, 1 cal = 4.18605 J


(16) 일 률

kW

kgf·m/s

PS

HP

kcal/s

ft·lbf/s

Btu/s

1

101.97

1.3596

1.3405

0.2389

737.6

0.9480

9.807E-3

1

1.333E-2

1.315E-2

2.343E-3

7.233

9.297E-3

0.7355

75

1

0.9859

0.1757

542.5

0.6973

0.746

76.07

1.0143

1

0.1782

550.2

0.7072

4.186

426.9

5.691

5.611

1

3087

3.968

1.356E-3

0.1383

1.843E-3

1.817E-3

3.239E-4

1

1.285E-3

1.055

107.6

1.434

1.414

0.2520

778.0

1

 (注) W : SI 단위, 1 W=1J/s, 1kgf·m/s=9.80665W, PS:佛마력, HP : 英마력

 


(17) 열전도율

 

(18) 열전도계수

kcal/m·h·℃

Btu/ft·h·℉

W/(m·K)

1

0.6720

1.163

1.488

1

1.731

0.8600

0.5779

1

 (注) W/(m·K) : SI단위, 1 cal(it)=4.1868J

 

 

kcal/m²·h·℃

Btu/ft²·h·℉

J/m²·h·℃

W/(m²·K)

1

0.2048

4187

1.163

4.882

1

2.044E4

5.678

2.389E-4

4.893E-5

1

2.778E-4

0.8598

0.1761

3599

1

 (注) W/(m²·K) :SI단위, 1 cal=4.18605 J


(19) 비 열

   

J/(kg·K)

kcal/(kg·℃)

Btu/(lb·。R)

1

2.38889E-4

2.38889E-4

4.18605E3

1

1

 (注) 1 cal = 4.18605 J