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 단위환산표


Si단위 접두어

배수

접두어

기호

배수

접두어

기호

배수

접두어

기호

10의18승

엑사(exa)

E

10의3승

킬로(kilo)

k

10의-6승

마이크로(micro)

μ

10의15승

페타(peta)

P

10의자승

헥토(hecto)

h

10의-9승

나노(nano)

n

10의12승

테라(tera)

T

10

데가(deka)

da

10의-12승

피코(pico)

p

10의9승

기가(giga)

G

10의-1승

데시(deci)

d

10의-15승

펨토(fermto)

f

10의6승

메가(mega)

M

10의-2승

센티(centi)

c

10의-18승

아토(atto)

a

 

 

 

10의-3승

밀리(milli)

m

 

 

 

million

 백만

 (ppm)

billion

백만2=1조

(ppb)

 trillion

 백만3=100만조=백경

 (ppt)

길이 단위 

단 위

㎝

m

in

ft

yd

    miles  

尺

間

町

里

㎝

1

0.01

0.3937

0.0328

0.0109

-

   0.033

0.0055

0.00009

-

m

100

 1

39.37

3.2808

1.0936

0.00062

      3.3

   0.55

0.00917

  0.00025

in

2.54

0.0254

1

0.0883

0.0278

-

0.0838

0.0140

 0.0002

-

ft

30.48

0.3048

 12

1

0.3333

0.00019

  1.0058

0.1676

 0.0028

-

yd

91.438

0.9144

  36

 3

1

0.00059

  3.0175

0.5029

 0.0083

  0.0002

miles

160930

1609.3

63360

5280

 1760

1

  5310.8

885.12

 14.752

  0.4098

1 尺

   30.303

0.303

11.93

0.9942

0.3314

0.0002

1

0.1667

0.0028

0.00008

1 間

  181.818

1.818

71.582

5.965

1.9884

0.0011

6

1

0.0167

0.0005

1 町

   10909

109.091

4294.9

357.91

119.304

0.0678

360

60

1

0.0278

1 里

  392727

3927.27

154619

12885

4295

2.4403

12960

2160

36

1

무게 단위 

단      위

㎎

g

㎏

ton

oz

lb

㎎

1

0.001

0.000001

1.0e-9

0.000035

2.204e-6

g

1000

1

0.001

0.000001

0.03527

0.0022

kg

1000000

1000

1

0.001

35.273

2.20459

ton

1.0e9

1000000

1000

1

35273

220459

oz

28349.5

28.3495

0.02835

0.000028

1

0.0625

lb

453592

453.592

0.45359

0.00045

16

1

 무게(질량)

단  위

g

kg

ton

그레인

온스

lb

돈

근

관

g

1

0.001

0.000001

15.432

0.03527

0.0022

0.26666

0.00166

0.000266

kg

1000

1

0.001

15432

33.273

2.20459

266.666

1.6666

0.26666

ton

1000000

1000

1

-

35273

2204.59

266666

1666.6

266.666

그레인

0.06479

0.00006

-

1

0.00228

0.00014

0.01728

0.00108

0.000017

온스

28.3495

0.02835

0.000028

437.4

1

0.06525

7.56

0.0473

0.00756

lb

453.592

0.45359

0.00045

7000

16

1

120.96

0.756

0.12096

돈

3.75

0.00375

0.000004

57.872

0.1323

0.00827

1

0.00625

0.001

근

600

0.6

0.0006

9259.556

21.1647

1.32279

160

1

0.16

관

3750

3.75

0.00375

57872

132.28

8.2672

1000

6.25

1

넓이 단위 

단      위

㎠

㎡

ft2

in2

ha

평

㎠

1

0.0001

0.155

0.001076

2.2e-14

0.00003

㎡

10000

1

1550

10.764

0.0001

0.3025

in2

6.4516

0.00064

1

0.006944

6.45e-8

0.000195

ft2

929.030

0.092903

144

1

0.000009

0.028109

ha

1.0e8

10000.

1.55e7

107639

1

3025.6

평

33051.2

3.3058

5122.95

35.576

33051

1

부피(체적) 단위 

단      위

㎤

㎥

ℓ

in³

ft³

gal(미)

㎤

1

0.0000001

0.001

0.06102

0.00003

0.16368

㎥

1000000

1

1000

61027

35.3165

0.00026

ℓ

1000

0.001

1

61.027

0.03531

264.186

in³

16.387

0.000016

0.01638

1

0.00057

0.26418

ft³

28316.8

0.02831

28.3169

1728

1

0.00432

gal(미)

3785.43

0.00378

3.78543

231

 

7.48051

 밀도

 단  위

g/m³

g/ℓ

kg/m³

lb/in³

lb/ft³

Ib/gal

g/m³

1

 

1000

0.03613

62.43

 

g/ℓ

0.001

1

1

0.000036

0.062422

0.008345

kg/m³

0.001

1

1

0.00003613

0.06243

0.008345

lb/in³

27.68

27682.6

27680

1

1728

231.015

lb/ft³

0.01602

16.02

16.02

0.0005787

1

0.13369

Ib/gal

0.11983

119.83

119.83

0.004329

7.48003

1

. 힘

 단  위

N

dyn

kgf

lbf

pdl

N

1

1E5

0.101972

0.2248

7.233

dyn

1E-5

1

1.01972E-6

2.248E-6

7.233E-5

kgf

9.80665

9.80665E5

1

2.205

70.93

lbf

4.44822

4.44822E5

0.4536

1

32.17

pdl

0.138255

1.38255E4

0.01410

0.03108

1

 단  위

hp

kgf.m/s

W(J.s)

kW

kcal/s

BTU/s

hp

1

76.3

745.7

0.7457

0.1782

0.7073

kgf.m/s

13.15e-3

1

9.807

9.807e-3

2.344e-3

9.296e-3

W(J.s)

1.342e-3

0.102

1

0.001

2.3884e-4

9.484e-4

kW

1.341

102

1000

1

0.239

0.9484

kcal/s

5.614

426.9

4187

4.187

1

3.968

BTU/s

1.415

107.6

1055

1.055

0.252

1

압력1

단      위

atm

bar

㎜Hg(torr)

㎜H2O

psi(lb/ft2)

kgf/㎠

Pa

atm

1

1,01325

760

10332.2

14.6956

1.03323

101325

bar

0.986923

1

750.06

10197.1

14.504

1.01972

100000

㎜Hg(torr)

0.001316

0.001333

1

13.595

0.01934

0.00136

0.01333

㎜H2O

0.000097

0.000098

0.073556

1

0.001422

0.0001

9.80669

psi(lb/ft2)

0.068046

0.068948

51.715

703.066

1

0.070307

6894.757

kgf/㎠

0.967841

0.980665

735.559

10000

14.2233

1

98066.5

Pa

0.00001

0.00001

0.007502

0.101971

0.000145

0.000011

1

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

압력2

 단  위

kPa

bar

psi

kgf/cm²

mmH₂O

in H₂O

ft H₂O

mmHg

in Hg

torr

kPa

1

0.01

0.14504

0.01020

101.972

4.01463

0.33455

7.50064

0.29530

7.50064

bar

100

1

14.5038

1.01972

10197.2

401.463

33.4552

750.064

29.5300

750.064

psi

6.89476

0.06895

1

0.07031

703.070

27.6799

2.30666

51.7151

2.03602

51.7151

kgf/cm²

98.0665

0.98067

14.2233

1

10000

393.701

32.8084

735.561

28.9590

735.561

mmH₂O

0.00981

0.00010

0.00142

0.00010

1

0.03937

0.00328

0.07356

0.00290

0.07356

in H₂O

0.24909

0.00249

0.03613

0.00254

25.4

1

0.08333

1.86833

0.07356

1.86833

ft H₂O

2.98907

0.02989

0.43353

0.03048

304.800

12.000

1

22.4199

0.88267

22.4199

mmHg

0.13332

0.00133

0.01934

0.00136

13.5951

0.53524

0.04460

1

0.03937

1

in Hg

3.38639

0.03386

0.49115

0.03453

345.316

13.5951

1.13202

25.4001

1

25.4001

torr

0.13332

0.00133

0.01934

0.00136

13.5951

0.53524

0.04460

1

0.03937

1

. 응력

 단  위

kgf/cm²

kgf/mm²

Pa

N/mm²

lbf/ft²

kgf/cm²

1

1E-2

0.980665E5

0.0980665

2048

kgf/mm²

1E2

1

0.980665E7

9.80665

2.048E5

Pa

1.0197E-5

1.0197E-7

1

1E-6

0.02089

N/mm²

10.1972

0.101972

1E6

1

2.089E4

lbf/ft²

0.0004882

4.882E-6

47.86

4.788E-5

1

 (참고) 1 N/mm²= 1MPa

속도

  단  위

m/s

km/h

in/s

ft/s

mile/h

knots

m/s

1

3.6

39.37

3.281

2.237

1.944

km/hr

0.2778

1

10.936

0.9113

0.6214

0.5400

in/s

0.0254

0.0914

1

0.833

0.0568

0.0494

ft/s

0.3048

1.097

12

1

0.6818

0.0293

mile/h

0.4470

1.6093

17.6

1.4667

1

0.8690

knots

0.5144

1.852

20.254

1.6878

1.1508

1

 (참고) knots : 노트, 미터법/ 1 노트= 1852 m/h 

각도

  단  위

deg

s

min

radians

quad

cycles

deg

1

3600

60

0.017453

0.011111

0.002778

s

0.000278

1

0.016667

4.848e-6

3.086e-6

7.716e-7

min

0.016667

60

1

2.909e-4

1.852e-4

4.63e-5

radians

57.2958

206264

343.75

1

0.63662

0.159155

quad

90

324000

5400

1.5708

1

0.25

cycles

360

12296000

21600

6.28319

4

1

각속도

 단  위

rpm

rad/s

rpm

1

0.1047

rad/s

9.549

1

 (참고) 1 rad=57.296。, rpm= r/min

가속도

  단  위

㎝/s²

m/s²

in/s²

ft/s²

gal

g

㎝/s²

1

0.01

0.393701

0.032808

1

0.00102

m/s²

100

1

39.3701

3.28084

100

0.101971

in/s²

2.54

0.0254

1

0.083333

2.54

0.00259

ft/s²

30.48

0.3048

12

1

30.48

0.031081

gal

1

0.01

0.393701

0.032808

1

0.00102

g

980.665

9.80665

386.089

32.1741

980.665

1

점도

 단  위

cP

P

Pa·s

kgf·s/m²

lbf·s/in²

cP

1

0.01

0.001

0.00010197

1.449E-7

P(g/㎝.s)

100

1

0.1

0.0101973

1.449E-5

Pa·s

1000

10

1

0.101973

1.449E-4

kgf·s/m²

9806.65

98.0665

9.80665

1

0.001422

lbf·s/in²

6.9E6

6.9E4

6.9E3

7.03E2

1

 단  위

cP

P(g/㎝.s)

gmf.s/㎠

lbf·s/in²

mPa-s

N.s/m²

cP

1

0.01

0.02e-7

1.45E-7

1

0.001

P(g/㎝.s)

100

1

1.02e-6

1.45E-5

100

0.1

gmf.s/㎠

98039.2

980.392

1

0.014219

98039.2

98.0392

lbf·s/in²

6894757

68947.57

70.3265

1

6894757

6894.76

mPa-s

1

0.01

1.02e-7

1.45e-7

1

0.001

N.s/m²

1000

10

0.0102

1.45e-4

1000

1

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

동점도

 단  위

cSt

St

㎠/s

m²/hr

in²/s

ft²/s

cSt

1

0.01

0.01

0.0036

0.00155

1.076e-5

St

100

1

1

0.36

0.155039

0.001076

㎠/s

100

1

1

0.36

0.155039

0.001076

m²/hr

277.778

2.77778

2.77778

1

0.430663

0.00299

in²/s

645

6.45

6.45

2.322

1

0.006943

ft²/s

92903

929.03

929.03

334.451

144.036

1

(참고) 1 St = 1 cm²/s  

체적 유량

 단  위

ℓ/s

ℓ/min

m³/s

m³/min

m³/h

ft³/s

ℓ/s

1

60

1E-3

0.06

3600

0.03532

ℓ/min

0.01666

1

1.66666E-5

1E-3

6E-2

0.00059

m³/s

1E3

6E4

1

60

3600

35.31

m³/min

1.66666E1

1E3

1.66666E-2

1

60

0.5885

m³/h

2.77777E-4

1.66666E1

2.77777E-4

1.66666E-2

1

0.00981

ft³/s

2.832E1

1.69833E3

2.832E-2

1.69833

101.9

1

일, 에너지 및 열량

 단  위

J

kgf·m

kW·h

kcal

ft·lbf

Btu

J(N.m)

1

0.10197

2.778E-7

2.389E-4

0.7376

9.480E-4

kgf·m

9.807

1

2.724E-6

2.343E-3

7.233

9.297E-3

kW·h

3.6E6

3.671E5

1

860.0

2.655E6

3413

kcal

4186

426.9

1.163E-3

1

3087

3.968

ft·lbf

1.356

0.1383

3.766E-7

3.239E-4

1

1.285E-3

Btu

1055

107.6

2.930E-4

0.2520

778.0

1

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

일률

 단  위

kW

kgf·m/s

PS

HP

kcal/s

ft·lbf/s

Btu/s

kW

1

101.97

1.3596

1.3405

0.2389

737.6

0.9480

kgf·m/s

9.807E-3

1

1.333E-2

1.315E-2

2.343E-3

7.233

9.297E-3

PS

0.7355

75

1

0.9859

0.1757

542.5

0.6973

HP

0.746

76.07

1.0143

1

0.1782

550.2

0.7072

kcal/s

4.186

426.9

5.691

5.611

1

3087

3.968

ft·lbf/s

1.356E-3

0.1383

1.843E-3

1.817E-3

3.239E-4

1

1.285E-3

Btu/s

1.055

107.6

1.434

1.414

0.2520

778.0

1

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

조도

 단  위

lux

foot-candle

lumen/ft²

lumen/m²

phot

lux

1

0.092903

0.92903

1

0.0001

foot-candle

10.76391

1

1

10.76391

0.001076

lumen/ft²

10.76391

1

1

10.76391

0.001076

lumen/m²

1

0.092903

0.92903

1

0.0001

phot

10000

929.03

929.03

10000

1

휘도

 단  위

candela/in²

candela/m²

foot-lambert

lambert

stilb

candela/in²

1

1550.003

452.389

0.486948

0.155

candela/m²

0.000645

1

0.000188

0.000314

0.0001

foot-lambert

0.00221

3.42626

1

0.001076

0.000343

lambert

2.05361

3183.1

929.03

1

0.31831

stilb

6.4516

10000

2918.63

3.1415915

1

농도

 단  위

%

ug/ℓ

mg/ℓ

g/ℓ

ppm

ppb

%

1

1e8

10000

10

10000

1e8

ug/ℓ

1e-7

1

0.001

0.000001

0.001

1

mg/ℓ

0.0001

1000

1

0.001

1

1000

g/ℓ

0.1

1e7

0.001

0.000001

0.001

1e7

ppm

0.0001

1000

1

0.001

1

1000

ppb

1e-7

1

0.001

0.000001

0.001

1

열전도율

 단  위

kcal/m·h·℃

Btu/ft·h·℉

W/(m·K)

kcal/m·h·℃

1

0.6720

1.163

Btu/ft·h·℉

1.488

1

1.731

W/(m·K)

0.8600

0.5779

1

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

열전도계수

 단  위

kcal/m²·h·℃

Btu/ft²·h·℉

J/m²·h·℃

W/(m²·K)

kcal/m²·h·℃

1

0.2048

4187

1.163

Btu/ft²·h·℉

4.882

1

2.044E4

5.678

J/m²·h·℃

2.389E-4

4.893E-5

1

2.778E-4

W/(m²·K)

0.8598

0.1761

3599

1

(참고) W/(m²·K) : SI단위, 1 cal=4.18605 J

열온도단위환산표

℉→℃:5/9x(℉-32)

℃→Kelvin:℃+273.15

℃→℉:(9/5x℃)+32

℉→Rankine:℉+459.67

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