4300
Catalog
Appendix
U17
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
SI Prefixes
Prefix
SI
Symbol
Multiplication
Factor
tera
T
10
12
giga
G
10
9
mega
M
10
6
kilo
k
10
3
hecto
h
10
2
deka
da
10
1
deci
d
10
-1
centi
c
10
-2
milli
m
10
-3
micro
m
10
-6
nano
n
10
-9
pico
p
10
-12
femto
f
10
-15
atto
a
10
-18
Table  U21 — Derived Units
Table U23 — Supplementary Units
Metric Conversions
Table U22 — Basic Units
Table U20 — SI Prefixes
Basic Units
Quantity
Unit
SI Symbol
Length
Meter
m
Mass
Kilogram kg
Time
Second
s
Electric Current
Ampere
A
Thermodynamic
Temperature
Kelvin
K
Amount of
Substance
Mole
mol
Luminous
Intensity
Candela
cd
Supplementary Units
Quantity
Unit
SI Symbol
Plane Angle Radian
rad
Solid Angle Sterodian
sr
Derived Units
Quantity
Unit
SI
Symbol
Formula
Acceleration
Meter per Second Squared
—
m/s
2
Angular Velocity
Radian per Second
—
rad/s
Area
Square Meter
—
m
2
Density
Kilogram per Cubic Meter
—
kg/m
3
Electric Resistance Ohm
W
V/A
Energy & Work
Joule
J
N.m
Force
Newton
N
kg.m/s
2
Frequency
Hertz
Hz
cycles/s
Power
Watt
W
J/s
Pressure & Stress
Pascal
Pa
N/m
2
Quantity of Heat
Joule
J
N.m
Specific Heat
Joule per Kilogram-Kelvin
—
J/kg.K
Thermal Conductivity Watt per Meter-Kelvin
—
W/m.K
Velocity
Meter per second
—
m/s
Viscosity, Dynamic
Pascal Second
—
Pa.s
Viscosity, Kinematic Square Meter per Second
—
m
2
/
s
Voltage
Volt
V
W/A
Volume
Cubic Meter
—
m
3
Dimensions and pressures for reference only, subject to change.