Watt hour

\[\begin{aligned} y[Joule] &= 3600x[Watt\ hour] \\ y[Kilojoule] &= 3.6x \\ y[gram\text{-}calorie] &= 860.421x \\ y[Kilocalorie] &= 0.860421x \\ y[Kilowatt\ hour] &= 0.001x \\ y[Electronvolt] &= 2.247 \times 10^{22}x \\ y[British\ thermal\ unit] &= 3.41214x \\ y[US\ therm] &= 3.413 \times 10^{-5}x \\ y[foot\ pound] &= 2655.22x \end{aligned}\]