627 imperial gallons in US gallons
Result
The conversion result is: 627 imperial gallons is equivalent to 752.995603291544 US gallons.[1]
Conversion formula
How to convert 627 imperial gallons to US gallons?
We know (by definition) that: 1 imperialgallon ≈ 1.20094992550486 usgallon.
We can set up a proportion to solve for the number of US gallons.
1 imperialgallon / 627 imperialgallon ≈ 1.20094992550486 usgallon / x usgallon
Now, we cross multiply to solve for our unknown x:
x usgallon ≈ (627 imperialgallon / 1 imperialgallon) * 1.20094992550486 usgallon → x usgallon ≈ 752.9956032915471 usgallon
Conclusion:
627 imperialgallon ≈ 752.9956032915471 usgallon

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US gallon is equal to 0.00132802900259807 times 627 imperial gallons.
It can also be expressed as: 627 imperial gallons is equal to 1 / 0.00132802900259807 US gallons.
Approximation
An approximate numerical result would be: six hundred and twenty-seven imperial gallons is about seven hundred and fifty-three US gallons, or alternatively, a US gallon is about zero times six hundred and twenty-seven 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.