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Generator Load Calculator

Calculate a generator's actual load from its rated size and load percentage (Load = Size × (Load % ÷ 100)).

Formula

Load = Size × (Load % ÷ 100)

Load
Actual load, in kilowatts
Size
Generator's rated size, in kilowatts
Load %
Percentage of rated capacity in use

What this calculator does

Calculates the actual load a generator is carrying from its rated size and load percentage.

Use cases

  • Check whether a generator is running within its optimal load range
  • Estimate actual load from a percentage reading on a generator display
  • Compare loading across generators of different rated sizes