How many J is 5 Wh?
5 Wh = 18,000 J
It is 18,000 J, so saying 18,000 J is fine — rounding is within 0.5%.
And how many Wh is 5 J?
5 J = 0 Wh
Formula: J = Wh × 3,600
Wh to J around this value
0.5 Wh1,800J
1 Wh3,600J
1.5 Wh5,400J
2 Wh7,200J
2.5 Wh9,000J
3 Wh10,800J
3.5 Wh12,600J
4 Wh14,400J
4.5 Wh16,200J
5 Wh18,000J
5.5 Wh19,800J
6 Wh21,600J
6.5 Wh23,400J
7 Wh25,200J
7.5 Wh27,000J
8 Wh28,800J
8.5 Wh30,600J
9 Wh32,400J
9.5 Wh34,200J
10 Wh36,000J