Unit Conversion Table

Release Date:

2026-06-18


Unit of length


1 in

=

25.4 mm

1 ft

=

0.3048 m

1 mile

=

1609.3 m

1 micron

=

10-6 m

 

Unit of length

1 liter (L)

=

0.001 m3

1 cu.ft. (cubic foot)

=

0.0283 m3

1 cu.in. (cubic inch)

=

16.39 cm³

1 gal (imp) gallon (imperial)

=

4.546 L (liters)

1 gal (US) gallon (US)

=

3.79 L (liters)

 

Pressure


To
Original unit

millimeter
Mercury column

inch
Mercury column

inch
Water column

rice
Water column

Standard
Atmospheric pressure

psi
pounds per square inch

kilogram/
Square centimeter

Kilopascal
K pa

Ba
bar

1 millimeter of mercury =

1

0.03937

0.5353

0.0136

0.00132

0.01934

0.00136

0.1333

0.0013

1 inch of mercury =

25.4

1

13.6

0.345

0.03342

0.4912

0.03453

3.387

0.0339

1 inch of water column =

1.868

0.07355

1

0.0254

0.00246

0.03612

0.00254

0.249

0.0025

1 meter of water column =

73.538

2.895

39.36

1

0.0968

1.422

0.1

9.801

0.098

1 standard atmosphere =

760

29.92

406.8

10.33

1

14.7

1.033

101.3

1.013

1 psi/(pound per square inch) =

51.71

2.036

27.69

0.703

0.06805

1

0.07031

6.895

0.0689

1 kilogram per square centimeter =

735.6

28.96

393.7

10

0.9678

14.22

1

98.05

0.981

1 kPa (kilopascal) =

7.5

0.2953

4.016

0.102

0.00987

0.1451

0.0102

1

0.01

1 bar =

750

29.53

401.6

10.2

0.987

14.51

1.02

100

1

 

Temperature


°C

℉

K

-70

-94

203

-50

-58

223

-30

-22

243

-10

14

263

0

32

273

20

68

293

40

104

313

60

140

333

80

176

353

100

212

373

120

248

393

140

284

413

160

320

433

180

356

453

200

392

473

220

428

493

240

464

513

260

500

533

280

536

553

300

572

573

1. The relationship between thermodynamic temperature T (K) and Celsius temperature t (°C) is: T (K) = t (°C) + 273.15
2. Temperature (℉ - 32) × 5/9 = ℃

Valve pressure

Class

Class American standard pressure — PN, Chinese national standard pressure

150LB

300LB

400LB

600LB

800LB

900LB

1500LB

2500LB

3500LB

4500LB

Nominal pressure PN

2.0MPa

5.0MPa

6.8MPa

11.0MPa

13.0MPa

15.0MPa

26.0MPa

42.0MPa

56.0MPa

76.0MPa

 

K

“K” Japanese standard pressure — PN, Chinese national standard pressure

10K

20K

30K

45K

65K

110K

140K

180K

250K

320K

Nominal pressure PN

2.0MPa

5.0MPa

6.8MPa

11.0MPa

13.0MPa

15.0MPa

26.0MPa

42.0MPa

56.0MPa

76.0MPa

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