1. SI Units
Conversions

2. Figure 6. SI base units.
Quantity
Base Unit
Symbol
Length
meter m
Mass
kilogram kg
Time
second s
electric current
ampere a
temperature
kelvin K
Amount
mole
mol
luminous intensity
candela cd

3. Figure 7. Metric prefixes.
Symbol
Meaning: "Multiply by…"
kilo- k
1,000
hecto- h
100
deka- da 10
deci- d
0.1
centi- c
0.01
milli- m
0.001

4. Figure 8. Converting from English/U.S. customary units to metric units.
Quantity
English/U.S. Customary Unit "To convert from…"
Metric Unit "…to…"
Conversion Factor "…multiply by…"
Length
inch (in)
centimeter (cm)
2.54 cm/in
feet (ft)
meter (m)
0.31 m/ft
mile (mi)
kilometer (km)
1.61 km/mi
mass/weight
ounce (oz)
gram (g)
28.35 g/oz
pound (lb)
kilogram (kg)
0.45 kg/lb
Volume
fluid ounce (fl oz)
milliliter (mL)
29.57 mL/fl oz
gallon (gal)
liter (L)
3.79 L/gal

5. Temperature Conversions
Celsius to Fahrenheit:  
(9/5 x C) + 32 = F
Fahrenheit to Celsius:
(F - 32) x 5/9 = C
Celsius to Kelvin:
C = K