640 US customary teaspoons in imperial gallons

Conversion

640 US customary teaspoons is equivalent to 0.693895153857491 imperial gallons.^[1]

Conversion formula
How to convert 640 US customary teaspoons to imperial gallons?

We know (by definition) that: $1 usteaspoon \approx 0.00108421117790233 imperialgallon$

We can set up a proportion to solve for the number of imperial gallons.

\frac{1 usteaspoon}{640 usteaspoon} \approx \frac{0.00108421117790233 imperialgallon}{x imperialgallon}

Now, we cross multiply to solve for our unknown $x$ :

x imperialgallon \approx \frac{640 usteaspoon}{1 usteaspoon} * 0.00108421117790233 imperialgallon \to x imperialgallon \approx 0.6938951538574912 imperialgallon

Conclusion: $640 usteaspoon \approx 0.6938951538574912 imperialgallon$

640 US customary teaspoons is equivalent to 0.693895153857491 imperial gallons

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 1.44113991060583 times 640 US customary teaspoons.

It can also be expressed as: 640 US customary teaspoons is equal to $\frac{1}{1.44113991060583}$ imperial gallons.

Approximation

An approximate numerical result would be: six hundred and forty US customary teaspoons is about zero point six nine imperial gallons, or alternatively, a imperial gallon is about one point four three times six hundred and forty US customary teaspoons.

Units involved

This is how the units in this conversion are defined:

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

Imperial Gallons

"The imperial (UK) gallon, now defined as exactly 4.54609 litres (about 277.42 cubic inches), is used in some Commonwealth countries and was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). The imperial fluid ounce is defined as 1⁄160 of an imperial gallon; there are four quarts in a gallon, two pints in a quart, and 20 Imperial fluid ounces in an imperial pint."

Wikipedia page of imperial gallons

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.

Conversion

Conversion formula How to convert 640 US customary teaspoons to imperial gallons?

Conversion in the opposite direction

Approximation

Conversion formula
How to convert 640 US customary teaspoons to imperial gallons?