Exponential Numbers
In the Joule Converter, if a number is greater than 10⁹ or less than 10^-6 , the figure will be shown as an exponential number. For example,

1e-6 = 1 x 10^-6 = 0.000001
1e-9 = 1 x 10^-9 = 0.000000001
1e-12 = 1 x 10^-12 = 0.000000000001