conversions

conversions

CONVERSIONS TABLE

Some handy conversions for common measurements used by spa and hot tub owners. 
Numbers are close approximations.

 
U.S. to Metric

Capacity
1/5 teaspoon = 1 millilitre
1 teaspoon = 5 ml
1 tablespoon = 15 ml
1/5 cup = 50 ml
1 cup = 240 ml
2 cups (1 pint) = 470 ml
4 cups (1 quart) = .95 litre
4 quarts (1 gal.) = 3.8 litres

Weight
1 fluid oz. = 30 millilitres
1 fluid oz. = 28 grams
1 pound = 454 grams

Metric to U.S.

Capacity
1 millilitre = 1/5 teaspoon
5 ml = 1 teaspoon
15 ml = 1 tablespoon
34 ml = 1 fluid oz.
100 ml = 3.4 fluid oz.
240 ml = 1 cup
1 litre = 34 fluid oz
1 litre = 4.2 cups
1 litre = 2.1 pints
1 litre = 1.06 quarts
1 litre = .26 gallon

Weight
1 gram = .035 ounce
100 grams = 3.5 ounces
500 grams = 1.10 pounds
1 kilogram = 2.205 pounds
1 kilogram = 35 oz.

Household Measurement Equivalents

16 tablespoons = 1 cup
12 tablespoons = 3/4 cup
10 tablespoons + 2 teaspoons = 2/3 cup
8 tablespoons = 1/2 cup
6 tablespoons = 3/8 cup
5 tablespoons + 1 teaspoon = 1/3 cup
4 tablespoons = 1/4 cup
2 tablespoons = 1/8 cup
2 tablespoons + 2 teaspoons = 1/6 cup
1 tablespoon = 1/16 cup
2 cups = 1 pint
2 pints = 1 quart
4 quarts = 1 gallon
1 gallon = 231 cubic inches
1 gallon water = 8.34 pounds
3 teaspoons = 1 tablespoon
48 teaspoons = 1 cup
1 teaspoon = 1/6 ounce
6 teaspoons = 1 ounce
1 tablespoon = 1/2 ounce
2 tablespoons = 1 ounce

 

Water Weight (rounded)

 

Pounds

Grams

Kilograms

Cubic cm.

0.0022

1

0.001

Cubic inch

0.036

16.4

0.016

Litre

2.2

1000

1

Gallon

8.35

3785

3.8

Cubic foot

62.4

28317

28.3

Electrical
amps x volts = watts
volts = amps x resistance (in ohms)
1000 watts = 1 kilowatt
1 kilowatt hour (kWh) = 1000 watts used in 1 hour

Parts per Million/Milligrams per Litre
1 ppm = 1 mg/L (in water)