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Joules ↔ Watt-Hours Calculator — J, kJ, MJ, Wh & kWh

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Calculated result

2 Wh

7.2 kJ · 0.0072 MJ

2 Wh · 0.002 kWh

Reverse check: 2 Wh × 3,600 = 7,200 J

Show the working
  1. 1. 7,200 J ÷ 3,600 J/Wh = 2 Wh.
  2. 2. 1 Wh is exactly 3,600 J because 1 W = 1 J/s and 1 h = 3,600 s.

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