490 US gallons in imperial gallons
Conversion
490 US gallons is equivalent to 408.010350468205 imperial gallons.[1]
Conversion formula
How to convert 490 US gallons to imperial gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of imperial gallons.
Now, we cross multiply to solve for our unknown :
Conclusion:
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial gallon is equal to 0.00245091821531603 times 490 US gallons.
It can also be expressed as: 490 US gallons is equal to imperial gallons.
Approximation
An approximate numerical result would be: four hundred and ninety US gallons is about four hundred and eight point zero zero imperial gallons, or alternatively, a imperial gallon is about zero times four hundred and ninety 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.