Units of measure
Description 
Unit of measure

Equivalencies


Symbol for formulas

Symbol

Name


Length 
The

m

Metro


Area 
In

M2


Volume 
V

M3

1 m3 = 1000 dm3 1 dm3 = 1 l 

Plane angle 
a, b, g

rad

radian

1° = p/180rad 1 ' = 1°/60 1 ' 1 ' = '/60 
Time 
t

s

According to


Frequency 
f

Hz

Hertz

1 Hz = 1/s 
Speed of rotation 
n

1/min


Speed 
v

m/s

1 Km/h = 1/3.6 m/s  
Angular velocity 
w

rad/s


Acceleration 
in

m/s2


Angular acceleration 
in

rad/s2


Massa 
m

Kg

kg


Density 
r

Kg/m3


Strength 
F

N

Newton

1N = 1 Kg * 1 m/s2 
9.81 N = 1kp  
Pressure 
p

PA = N/m2

Pascal

104 * 9.81 N/m2 = 1kp/cm2 
Effort 
s

N/mm2

9.81 N/mm2 = 1kp/mm2  
Job 
W

J = Nm

Joules

9.81 Nm = 1 kpm 
Energy 
W

4187 J = 1 kcal  
Heat replica watches 
Q

1 kWh = 3.6 x 106 J  
Couple 
M

NM

9.81 Nm = 1 kpm 1 Nm = 0102 kpm 

Power 
P

W = J/s = Nm/s

Watts

1 HP = 735.5 W fake breitling 
Moment of inertia 
J

kg m2

9.81 kg m2 = 1 kpms2 Pd2 = 4 J 

Dynamic viscosity 
h

PA * s

Poise

101 Pa * s = 1 P 
Kinematic viscosity 
n

M2/s

Stokes

104 m2/s = 1 St 
Current 
The

In

Ampere

1 A = 1 W/V = 1 V/W 
Tension 
U

V

Volts

1 V = 1 W/A 
Resistance 
R

W

Ohm

1 W = 1 V/A = 1/S 
Conductivity 
G

S

Siemens

1s = 1/W 
Capacity 
C

F

Faraday

1F = 1 C/V 
Upload 
Q

C

Coulomb

1 C = 1 A * s 
Inductance 
L

H

Henry

1:00 = 1 Vs/A 
Magnetic induction 
B

T

Tesla

1 T = 1 Wb/m2 
Magnetic force 
H

A/m


Magnetic flux 
f

WB

Weber

1 Wb = 1 V * s 
Difference of temperature 
T
J 
K
° C 
Kelvin

0 K =273.15° C 