Example:
15 kW*h = 51182.124497 Btu (IT), Btu
1 kW*h = 3412.141633 Btu (IT), Btu | 1 Btu (IT), Btu = 0.000293 kW*h
Conversion Steps:
15 × (3600000 / 1055.05585262) = 51182.124496919