1. The International System of Units - SI
Metrics
The International System of Units - SI

2. Commonly used units/symbols
What are the units used to measure
Mass
Distance
Volume
Time
Temperature
What are their symbols?

3. Fahrenheit Water freezes/thaws at 32° Water vaporizes at 212°
“Absolute Zero” is -459°

4. Celsius Water freezes/thaws at 0° Water vaporizes at 100°
“Absolute Zero” is -273°

5. Kelvin Water freezes/thaws at 273 Water vaporizes at 373
“Absolute Zero” is 0

6. Temperature Conversions
To convert ˚C to ˚F :
˚C x 9/5, = ˚F
To convert ˚F to ˚C :
˚F – 32, x 5/9 = ˚C

7. Common prefixes
What are the common prefixes we use in metrics?

8. yotta Y zetta Z exa E peta P tera T giga G mega M kilo k hecto h deca
Metric Prefix Table
Prefix
Symbol
Multiplier
Exponential
yotta Y
1,000,000,000,000,000,000,000,000
1024
zetta Z
1,000,000,000,000,000,000,000
1021
exa E
1,000,000,000,000,000,000
1018
peta P
1,000,000,000,000,000
1015
tera T
1,000,000,000,000
1012
giga G
1,000,000,000
109
mega M
1,000,000
106
kilo k
1,000
103
hecto h
100
102
deca da 10
101 1
deci d
0.1
10¯1
centi c
0.01
10¯2
milli m
0.001
10¯3
micro
10¯6
nano n
10¯9
pico p
10¯12
femto f
10¯15
atto a
10¯18
zepto z
10¯21
yocto y
10¯24

9. Unit
Divisions
SI Equivalent
1 inch (in)
25.4 mm
1 foot (ft)
12 in m
1 yard (yd)
3 ft m
1 mile (mi)
5,280 ft or 1,760 yd km
Survey
1 link (li)
33⁄50 ft m
1 foot (survey)
1200⁄3937 m m
1 rod (rd)
25 li m
1 chain (ch)
4 rd m
1 furlong (fg)
10 ch m
1 mile (survey)
80 ch km

10. Liquid volume Unit Divisions SI Equivalent 1 minim (min)mL
1 US fluid dram (fl dr)
60 min mL
1 US fluid ounce (fl oz)
8 fl dr mL
1 US gill (gi)
4 fl oz mL
1 US cup (cp) or (c)
2 gi or 8 fl oz mL
1 (liquid) US pint (pt)
2 cups or 4 gi or 16 fl oz mL
1 (liquid) quart (qt)
2 pt or 32 fl oz mL
1 (liquid) US gallon (US gal)
4 qt or 128 fl oz or 231 cu in L
1 beer barrel (bbl)
31 gal L
1 oil barrel (bbl)
42 gal L
1 hogshead
63 gal L

11. Avoirdupois weight
Unit
Divisions
SI Equivalent
1 grain (gr)
1⁄7000 lb mg
1 dram (dr)
27+11⁄32 gr g
1 ounce (oz)
16 dr g
1 pound (lb)
16 oz g
1 hundredweight (cwt)
100 lb kg
1 (short) ton
20 cwt kg

12. Is there an English unit for mass?
The slug. It is a mass that accelerates by 1 ft/s² when a force of one pound-force (lbf) is exerted on it. Therefore a slug has a mass of  pound-mass or  kg.

13. Is there an SI unit for weight?
The Newton. It is equal to the amount of force required to give a mass of one kilogram an acceleration of one meter per second squared.

14. Can you convert units? KHD(U)DCM
King Henry Died while Drinking Chocolate Milk
Kilo x 1000
Hecto x 100
Deca x 10
(unit) g, m, L
Deci x .1
Centi x .01
Milli x .001