Length

meter

m

Mass

kilogram

kg

Time

second

s

Temperature

kelvin

K

Electric current

ampere

A

Frequency

hertz

Hz

1/s

Force

newton

N

kg m/s ²

Pressure

pascal

Pa

N/m ²

Energy

joule

J

N m

Power

watt

W

J/s

Electric charge

coulomb

C

A s

Potential

volt

V

J/C

Conductance

siemens

S

A/V

Resistance

ohm

?

V/A

Speed of light in vacuum

c

2.99793 10 ⁸ m/s

Electron charge

q

1.60218 10 ^?19 C

Planck s constant

h

6.6256 10 ^?34 J s

Boltzmann s constant

k _B

1.38054 10 ^?23 J/K

k _B/ q at T = 300 K

0.02586 eV

Electron volt

eV

1.60218 10 ^{? 19} J

Base of natural logarithms

e

2.71828

Pi

?

3.14159

2 ? radians

360

cm

inch

cm 0.3937

km

mile

km 0.6214

inch

cm

inch 2.5400

mile

km

mile 1.6093

eV

J

eV 1.60218 10 ^?19

radian

degree

radian 57.296

C

F

C 1.8 + 32

K

C

K + 273