250kWhは何MJですか？
250kWh = 900MJ
900MJなので900MJと言っても差し支えありません — 誤差は0.5%以内です。
逆に250MJは何kWhですか？
250MJ = 69.44kWh
計算式: MJ = kWh × 3.6
kWh → MJ 前後の値
70 kWh252MJ
90 kWh324MJ
110 kWh396MJ
130 kWh468MJ
150 kWh540MJ
170 kWh612MJ
190 kWh684MJ
210 kWh756MJ
230 kWh828MJ
250 kWh900MJ
270 kWh972MJ
290 kWh1,044MJ
310 kWh1,116MJ
330 kWh1,188MJ
350 kWh1,260MJ
370 kWh1,332MJ
390 kWh1,404MJ
410 kWh1,476MJ
430 kWh1,548MJ
450 kWh1,620MJ