Joule

\[\begin{aligned} y[Kilojoule] &= 0.001x[Joule] \\ y[gram\text{-}calorie] &= 0.239006x \\ y[Kilocalorie] &= 0.000239006x \\ y[Watt\ hour] &= 0.000277778x \\ y[Kilowatt\ hour] &= 2.7778 \times 10^{-7}x \\ y[Electronvolt] &= 6.242 \times 10^{18}x \\ y[British\ thermal\ unit] &= 0.000947817x \\ y[US\ therm] &= 9.4804 \times 10^{-9}x \\ y[foot\ pound] &= 0.737562x \end{aligned}\]