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1992-09-09
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** File: MathUnit.hlp
** Index: 7
** Content:Math Units and Physical constants
***** Units for a system of measures *****
as used internationally
Quantity Measured Unit Abbreviation
Length meter m
Mass kilogram kg
Time second s
Electric current ampere A
Temperature degree Kelvin K
Luminous intensity candela cd
Amount of substance mole mol
***** Recommended decimal multiples *****
and submultiples
Multiples
and submultiples Prefixes Symbols
1.0E+18 exa E
1.0E+15 pecta P
1.0E+12 tera T
1.0E+9 giga G
1.0E+6 mega M
1.0E+3 kilo k
1.0E+2 hecto h
1.0E+1 deca da
1.0E-1 deci d
1.0E-2 centi c
1.0E-3 milli m
1.0E-6 micro µ
1.0E-9 nano n
1.0E-12 pico p
1.0E-15 femto f
1.0E-18 atto a
*** Tables of Measure and Weight Units ***
the Metric System
Ratio to the
Name Abbreviation primary unit
LENGTH
millimicron mµ 1.0E-9
micron µ 1.0E-6
centimillimeter cmm 1.0E-5
decimillimeter dmm 1.0E-4
millimeter mm 1.0E-3
centimeter cm 1.0E-2
decimeter dm 1.0E-1
meter m primary unit
decameter dam 10
hectometer hm 100
kilometer km 1000
AREA
square meter sq. m. primary unit
are a 100
hectare ha 1.0E+4
square kilometer sq. km. 1.0E+6
WEIGHT & MASS
milligram mg 1.0E-6
centigram cg 1.0E-5
decigram dg 1.0E-4
gram g 1.0E-3
decagram dag 1.0E-2
hectogram hg 1.0E-1
kilogram kg primary unit
quintal q 100
metric ton MT (or t) 1000
CAPACITY
microliter µl 1.0E-6
milliliter ml 1.0E-3
centiliter cl 1.0E-2
deciliter dl 1.0E-1
liter l primary unit
deciliter dal 10
hectoliter hl 100
kiloliter kl 1000
** Conversion factors: English to Metric **
To obtain Multiply By
Metric English Conversion Factor
microns mils 25.4
centimeters inches 2.54
meters feet 0.3048
meters yards 0.9144
kilometers miles 1.609344
grams ounces 28.34952313
kilograms pounds 0.45359237
liters gallons 3.785411784
milliliters fluid ounces 29.57352956
example: 1 inch = 2.54 centimeters