Kilowatt-hours to yottawatt-hours equation
To convert kilowatt-hours to yottawatt-hours:
Multiply the number of kilowatt-hours by 1.0000000000000001e-21
About kilowatt-hours
One kilowatt-hour is equal to a thousand watt-hours
About yottawatt-hours
One yottawatt-hour is equal to a septillion watt-hours