Chapter 4 Mathematics for Plumbers
99
Figure 4-28. Comparing common liquid measures.
(Copyright by Polymetric Services, Inc., Tarzana, CA
91356)
LITER
Common Liquid Conversions
Gallon Quarts Pints Cups Ounces Liters
1 8 0.237
1 2 16 0.473
1 2 4 32 0.946
1 4 8 16 128 3.785
Examples:
To convert gallons to liters
multiply gallons by 3.785
6 gal. = ______ liters = 6 × 3.785 = 22.71 liters
To convert quarts to liters
multiply quarts by 0.946
3 qt. = ______ liters = 3 × 0.946 = 2.838 liters
DECI LITER
ONE
ONE GALLON
ONE
PINT
OUNCE
8 oz
CUP
ONE
QUART
Figure 4-29. Kelvin, Celsius, and Fahrenheit temper-
ature measurement and conversion factors.
0
373.15 100 212
310.15 37 98.6
273.15 0 32
233.15 40 –40
0 –273.15 –459.67
Fahrenheit
Celsius
Kelvin
Water boils
Body temp.
Water
freezes
Absolute zero
To convert from degrees
Celsius to degrees Kelvin,
add 273.15.
Example:
68°C = –––––– °K
68 + 273.15 = 341.15°K
To convert from degrees
Kelvin to degrees Celsius,
subtract 273.15.
Example:
351°K = ______°C
351 – 273.15 = 77.85°C
To convert from degrees
Fahrenheit to degrees
Celsius, subtract 32 and
multiply by 5∕9.
Example:
200°F = ______°C
(200 – 32) × 5∕9 = 93.33°C
To convert from degrees
Celsius to degrees
Fahrenheit, multiply by 9∕5
and add 32.
Example:
75°C = ______°F
(9∕5 × 75) + 32 = 167°F