Teaspoons to Ounces [water]
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1 teaspoon (tsp) = 0.173862593 ounce (oz). Teaspoon (tsp) is a unit of Volume used in Cooking system. Ounce (oz) is a unit of Weight used in Standard system. Please note this is volume to weight conversion, this conversion is valid only for pure water at temperature 4 °C.
US oz = 2 US tbsp = 28.349523125 g
US fl oz = 29.5735295625 ml (milliliters) = 29.5735295625 g (grams) of pure water at temperature 4 °C.
US cup = 8 fl oz = 236.5882365 ml (milliliters) = 236.5882365 g (grams) of pure water at temperature 4 °C.

Teaspoons: A Unit of Volume

Teaspoons are a unit of volume that are used to measure small amounts of liquids, such as water, milk, oil, vinegar, etc. They are also used to measure some dry ingredients, such as sugar, salt, baking powder, etc. They are different from tablespoons, which are a larger unit of volume. Teaspoons are also different from fluid ounces, which are a larger unit of volume. Teaspoons are also different from barrel of oil equivalent (BOE), which is a unit of energy based on the approximate energy released by burning one barrel of crude oil.

How to Convert Teaspoons

To convert teaspoons to other units of volume, one can use the following formulas:

• To convert teaspoons to milliliters: multiply by 5
• To convert teaspoons to fluid ounces: multiply by 0.1667
• To convert teaspoons to cups: multiply by 0.0208
• To convert teaspoons to gallons (US): multiply by 0.001302
• To convert teaspoons to gallons (UK): multiply by 0.0014
• To convert teaspoons to BOE: divide by 15950

Definition of the Ounce

The ounce is defined differently in different systems of measurement. The most common ounce is the international avoirdupois ounce, which is equal to 28.349523125 grams or 437.5 grains. This is the ounce that is used for most purposes, such as measuring food, postal items, fabric, paper and boxing gloves. The avoirdupois ounce is one-sixteenth of an avoirdupois pound, which is defined as 7000 grains.

Another ounce is the international troy ounce, which is equal to 31.1034768 grams or 480 grains. This is the ounce that is used for measuring precious metals and gems, such as gold, silver, platinum and diamonds. The troy ounce is one-twelfth of a troy pound, which is defined as 5760 grains.

A third ounce is the apothecaries’ ounce, which is also equal to 480 grains, but it is divided into eight drams instead of twelve pennyweights like the troy ounce. The apothecaries’ ounce is used for measuring medicines and drugs.

There are also other historical or regional ounces that have different values, such as the Spanish ounce, the French ounce, the Portuguese ounce, the Roman/Italian ounce, the Dutch metric ounce and the Chinese metric ounce.

How to Convert Ounces

Ounces can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert ounces to other units of weight in the US customary system and the SI system:

• To convert ounces to pounds, divide by 16. For example, 32 oz = 32/16 = 2 lb.
• To convert ounces to tons (short), divide by 32000. For example, 64000 oz = 64000/32000 = 2 tons.
• To convert ounces to grams, multiply by 28.349523125. For example, 4 oz = 4 x 28.349523125 = 113.3980925 g.
• To convert ounces to kilograms, multiply by 0.028349523125. For example, 8 oz = 8 x 0.028349523125 = 0.226796185 kg.
• To convert ounces to milligrams, multiply by 28349.523125. For example, 2 oz = 2 x 28349.523125 = 56699.04625 mg.
• To convert ounces to micrograms, multiply by 28349523.125. For example, 1 oz = 1 x 28349523.125 = 28349523.125 µg.