SI Units Conversion Table
SI UNITS CONVERSION TABLE
(the units added { } is permitted to use)
Kinds of Quantity
(Name of Unit)
Symbol of Unit [Definition]
(a prefix added example)
Units avoid using
(Relation to SI units)
Length
(metre)
m
(km, mm, μm, nm)
Å(=10
-10
m=0.1 nm)
Area
m
2
(cm
2
, mm
2
, μm
2
)
Volume
m
3
(dm
3
, cm
3
, mm
3
)
{L(=10
-3
m
3
=dm
3
)}
mL(=10
-6
m
3
=cm
3
)
Mass
(kilogramme)
kg
(Mg, g, mg, μg)
{t(=10
3
kg=Mg)}
Density
kg/m
3
(Mg/m
3
)
g/cm
3
(=10
3
kg/m
3
=Mg/m
3
)
Time
(second)
s
(Ms, ks, ms, μs)
{min(=60 s)}
{h(=3.6 ks)}
{d(=86.4 ks)}
1-y≒31.556926×10
6
s
(≒365.2422 d)
Frequency
(hertz)
Hz ［s
-1
］
(GHz, MHz, kHz)
Wave Number m
-1
Å
-1
(=10
10
m
-1
)
cm
-1
(=10
2
m
-1
)
Speed m/s
Acceleration m/s
2
Diffusion Coefficient
Kinematic Viscosity
m
2
/s St(=10
-4
m
2
/s=cm
2
/s)
Power
(newton)
N ［kg・m/s
2
］
dyn(=10
-5
N=10 μN)
kgf(=9.80665 N)
Pressure
(pascal)
Pa ［N/m
2
］
(GPa, MPa, mPa)
kgf/mm
2
(=9.80665 MPa)
bar(=10
5
Pa=0.1 MPa)
Torr(≒133.32 Pa)
atm(=101325 Pa)
Surface Tension N/m dyn/cm(=10
-3
N/m=mN/m)
Viscosity Pa・
・・
・s P(=10
-1
Pa・s)
Stress Intensity Factor
MPa・
・・
・m
1/2
kgf/mm
3/2
(=0.31012 MPa・m
1/2
)
N/mm
3/2
(=0.031623 MPa・m
1/2
)
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