Page 1649 - MiSUMi 2025

1-3. Multiples of 10 of SI Units
Prefix The names and symbols of SI prefixes used to express decimal multiples and submultiples of units are listed in Table 4.
Table 4 SI Prefixes
Multiples Prefix Multiples Prefix Multiples Prefix
of Unit Name Symbol of Unit Name Symbol of Unit Name Symbol
10 18 Exsa E 10 2 Hecto h 10 −9 Nano n
10 15 Peta P 10 1 Deca da 10 −12 Pico p
10 12 Tera T 10 −1 Deci d 10 −15 Femto f
10 9 Giga G 10 −2 Centi c 10 −18 Atto a
10 6 Mega M 10 −3 Milli m
10 3 Kilo k 10 −6 Micro μ
2. Conversion Tables for SI and Conventional Units
(The units enclosed by thick lines are the SI units.)
N dyn kgf Pa·s cP P
1
1
Force 1×10 −5 1×10 5 1.019 72×10 −1 −6 Viscosity 1×10 −3 1×10 3 1×10 −2
1
1.019 72×10
1
1×10
9.806 65 9.806 65×10 5 1 1×10 −1 1×10 2 1
Note) 1P＝1dyn·s/cm 2 ＝1g/cm·s
1Pa·s＝1N·s/m 2 ,1cP＝1mPa·s
Pa or N/m 2 MPa or N/mm 2 kgf/mm 2 kgf/cm 2 m /s cSt St
2
1 1×10 −6 1.019 72×10 −7 1.019 72×10 −5 1 1×10 6 1×10 4
Stress 1×10 6 1 1.019 72×10 −1 1.019 72×10 Kinematic Viscosity 1×10 −6 1 1×10 −2
9.806 65×10 6 9.806 65 1 1×10 2 1×10 −4 1×10 2 1
9.806 65×10 4 9.806 65×10 −2 1×10 −2 1 Note) 1St=1cm /s,1cSt=1mm /s
2
2
Note) 1Pa＝1N/m 2 ,1MPa＝1N/mm 2
mmHg
Pa kPa MPa bar kgf/cm 2 atm mmH2O or
Torr
1 1 ×10 −3 1 ×10 −6 1 ×10 −5 1.019 72 ×10 −5 9.869 23 ×10 −6 1.019 72 ×10 −1 7.500 62 ×10 −3
1 ×10 3 1 1 ×10 −3 1 ×10 −2 1.019 72 ×10 −2 9.869 23 ×10 −3 1.019 72 ×10 2 7.500 62
Pressure 1 1 ×10 6 5 1 1 ×10 3 2 1 1 ×10 −1 1 1 ×10 1.019 72 ×10 9.869 23 −1 1.019 72 ×10 5 4 7.500 62 ×10 3 2

9.869 23 ×10
1.019 72 ×10
×10
7.500 62 ×10
1.019 72
×10
9.806 65 ×10 4 9.806 65 ×10 9.806 65 ×10 −2 9.806 65 ×10 −1 1 9.678 41 ×10 −1 1 ×10 4 7.355 59 ×10 2

1.013 25 ×10 5 1.013 25 ×10 2 1.013 25 ×10 −1 1.013 25 1.033 23 1 1.033 23 ×10 4 7.600 00 ×10 2
9.806 65 9.806 65 ×10 −3 9.806 65 ×10 −6 9.806 65 ×10 −5 1 ×10 −4 9.678 41 ×10 −5 1 7.355 59 ×10 −2

1.333 22 ×10 2 1.333 22 ×10 −1 1.333 22 ×10 −4 1.333 22 ×10 −3 1.359 51 ×10 −3 1.315 79 ×10 −3 1.359 51 ×10 1

Note) 1Pa＝1N/m 2 kWCh kgfCm kcal W/(m·K) kcal/(h·m·˚C)
J
Work, Energy, Heat Quantity 3.600 1 ×10 6 2.777 78×10 －7 1.019 72×10 －1 2.388 89×10 －4 Thermal Conductivity 1.162 79 8.600 0×10 −1
1
5
1
2
8.600 0×10
3.670 98×10
1
2.342 70×10
9.806 65
1
2.724 07×10
－3
－6
2
2
4.186 05×10
1.162 79×10
3
1
1
8.600 0×10
−1
Note) 1J＝1W·s, 1J＝1N·m －3 4.268 58×10 2 kcal/h Coefficient of Heat Transfer W/(m ·K) kcal/(h·m ·˚C)
1.162 79
1
PS
kgfCm/s
W
Power Heat Flow 9.806 65 ×10 2 1.019 72×10 －1 1.359 62 ×10 －3 8.600 0×10 －1 Specific Heat J/(kg·K) 2.388 89×10 −4
1
kcal/(kg·˚C)
1.333 33 ×10
1
8.433 71
－2
cal/(g·˚C)
1
6.325 29×10
7.5
×10
7.355
1
2
1.185 72×10
1.580 95 ×10
1.162 79
－1
Note) 1W＝1J/s, PS: Metric Horsepower －3 1 4.186 05×10 3 1
B-004