1 US gallon in US customary teaspoons

Conversion

1 US gallon is equivalent to 768 US customary teaspoons.^[1]

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary teaspoon is equal to 0.00130208333333333 times 1 US gallon.

It can also be expressed as: 1 US gallon is equal to $\frac{1}{0.00130208333333333}$ US customary teaspoons.

Approximation

An approximate numerical result would be: one US gallon is about seven hundred and sixty-eight US customary teaspoons, or alternatively, a US customary teaspoon is about zero times one US gallon.

Units involved

This is how the units in this conversion are defined:

Us Gallons

"The US gallon is legally defined as 231 cubic inches, which is exactly 3.785411784 liters.[2][3] A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1⁄128 of a US gallon."

Wikipedia page of US gallons

Us Customary Teaspoons

"In the United States one teaspoon as a unit of culinary measure is 1⁄3 tablespoon, that is, 4.92892159375 ml; it is exactly 1 1⁄3 US fluid drams, 1⁄6 US fl oz, 1⁄48 US cup, and 1⁄768 US liquid gallon and 77⁄256 or 0.30078125 cubic inches. For nutritional labeling on food packages in the US, the teaspoon is defined as precisely 5 ml."

Wikipedia page of US customary teaspoons

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.