120 US gallons in imperial gallons
Result
The conversion result is: 120 US gallons is equivalent to 99.9209021554787 imperial gallons.[1]
Conversion formula
How to convert 120 US gallons to imperial gallons?
We know (by definition) that: 1 usgallon ≈ 0.832674184628989 imperialgallon.
We can set up a proportion to solve for the number of imperial gallons.
1 usgallon / 120 usgallon ≈ 0.832674184628989 imperialgallon / x imperialgallon
Now, we cross multiply to solve for our unknown x:
x imperialgallon ≈ (120 usgallon / 1 usgallon) * 0.832674184628989 imperialgallon → x imperialgallon ≈ 99.92090215547869 imperialgallon
Conclusion:
120 usgallon ≈ 99.92090215547869 imperialgallon
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial gallon is equal to 0.0100079160458738 times 120 US gallons.
It can also be expressed as: 120 US gallons is equal to 1 / 0.0100079160458738 imperial gallons.
Approximation
An approximate numerical result would be: one hundred and twenty US gallons is about ninety-nine point nine two imperial gallons, or alternatively, a imperial gallon is about zero point zero one times one hundred and twenty US 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.