There is no formula that I know of to convert KWH to amps.

If you have access to the peak demand you might be able to do something like dividing the peak demand by 240 volts (for single phase residential service) & getting an answer. If you have 3 phase, divide by the line to line voltage & multiply by .58. This would only apply to well balanced 3 phase services.

Tom

Few things are harder to put up with than the annoyance of a good example.