Convert kilojoules to watt-hours (kJ to Wh)

1 kJ = 0.277777777778 Wh. Kilojoule (kJ), Watt-hour (Wh). The exact factor, the formula and every value from 1 to 10,000.

=

How to convert kilojoules to watt-hours

Multiply the value in kJ by 0.277777777778: the result is in Wh.

Wh = kJ × 0.277777777778The other way round, 1 Wh = 3.6 kJ.

Where these two units are used

The kilojoule is compulsory on European food labels, where the kilocalorie may appear beside it but never in its place. The watt-hour measures battery capacity, and it is what airlines read: above 100 watt-hours, a lithium battery boards the cabin only with prior approval. A district heating network bills in gigajoules in Denmark and in megawatt-hours in Germany for the same heat delivered: 1 watt-hour is 3.6 kilojoules, and the choice of unit rests on the country, not on physics.

Conversion table, kilojoules to watt-hours

1 kJ0.2778 Wh
2 kJ0.5556 Wh
5 kJ1.3889 Wh
10 kJ2.7778 Wh
20 kJ5.5556 Wh
50 kJ13.8889 Wh
100 kJ27.7778 Wh
500 kJ138.8889 Wh
1,000 kJ277.7778 Wh
Show every value
  • 1 kJ = 0.2778 Wh
  • 2 kJ = 0.5556 Wh
  • 3 kJ = 0.8333 Wh
  • 4 kJ = 1.1111 Wh
  • 5 kJ = 1.3889 Wh
  • 6 kJ = 1.6667 Wh
  • 7 kJ = 1.9444 Wh
  • 8 kJ = 2.2222 Wh
  • 9 kJ = 2.5 Wh
  • 10 kJ = 2.7778 Wh
  • 11 kJ = 3.0556 Wh
  • 12 kJ = 3.3333 Wh
  • 13 kJ = 3.6111 Wh
  • 14 kJ = 3.8889 Wh
  • 15 kJ = 4.1667 Wh
  • 16 kJ = 4.4444 Wh
  • 17 kJ = 4.7222 Wh
  • 18 kJ = 5 Wh
  • 19 kJ = 5.2778 Wh
  • 20 kJ = 5.5556 Wh
  • 21 kJ = 5.8333 Wh
  • 22 kJ = 6.1111 Wh
  • 23 kJ = 6.3889 Wh
  • 24 kJ = 6.6667 Wh
  • 25 kJ = 6.9444 Wh
  • 26 kJ = 7.2222 Wh
  • 27 kJ = 7.5 Wh
  • 28 kJ = 7.7778 Wh
  • 29 kJ = 8.0556 Wh
  • 30 kJ = 8.3333 Wh
  • 31 kJ = 8.6111 Wh
  • 32 kJ = 8.8889 Wh
  • 33 kJ = 9.1667 Wh
  • 34 kJ = 9.4444 Wh
  • 35 kJ = 9.7222 Wh
  • 36 kJ = 10 Wh
  • 37 kJ = 10.2778 Wh
  • 38 kJ = 10.5556 Wh
  • 39 kJ = 10.8333 Wh
  • 40 kJ = 11.1111 Wh
  • 41 kJ = 11.3889 Wh
  • 42 kJ = 11.6667 Wh
  • 43 kJ = 11.9444 Wh
  • 44 kJ = 12.2222 Wh
  • 45 kJ = 12.5 Wh
  • 46 kJ = 12.7778 Wh
  • 47 kJ = 13.0556 Wh
  • 48 kJ = 13.3333 Wh
  • 49 kJ = 13.6111 Wh
  • 50 kJ = 13.8889 Wh
  • 51 kJ = 14.1667 Wh
  • 52 kJ = 14.4444 Wh
  • 53 kJ = 14.7222 Wh
  • 54 kJ = 15 Wh
  • 55 kJ = 15.2778 Wh
  • 56 kJ = 15.5556 Wh
  • 57 kJ = 15.8333 Wh
  • 58 kJ = 16.1111 Wh
  • 59 kJ = 16.3889 Wh
  • 60 kJ = 16.6667 Wh
  • 61 kJ = 16.9444 Wh
  • 62 kJ = 17.2222 Wh
  • 63 kJ = 17.5 Wh
  • 64 kJ = 17.7778 Wh
  • 65 kJ = 18.0556 Wh
  • 66 kJ = 18.3333 Wh
  • 67 kJ = 18.6111 Wh
  • 68 kJ = 18.8889 Wh
  • 69 kJ = 19.1667 Wh
  • 70 kJ = 19.4444 Wh
  • 71 kJ = 19.7222 Wh
  • 72 kJ = 20 Wh
  • 73 kJ = 20.2778 Wh
  • 74 kJ = 20.5556 Wh
  • 75 kJ = 20.8333 Wh
  • 76 kJ = 21.1111 Wh
  • 77 kJ = 21.3889 Wh
  • 78 kJ = 21.6667 Wh
  • 79 kJ = 21.9444 Wh
  • 80 kJ = 22.2222 Wh
  • 81 kJ = 22.5 Wh
  • 82 kJ = 22.7778 Wh
  • 83 kJ = 23.0556 Wh
  • 84 kJ = 23.3333 Wh
  • 85 kJ = 23.6111 Wh
  • 86 kJ = 23.8889 Wh
  • 87 kJ = 24.1667 Wh
  • 88 kJ = 24.4444 Wh
  • 89 kJ = 24.7222 Wh
  • 90 kJ = 25 Wh
  • 91 kJ = 25.2778 Wh
  • 92 kJ = 25.5556 Wh
  • 93 kJ = 25.8333 Wh
  • 94 kJ = 26.1111 Wh
  • 95 kJ = 26.3889 Wh
  • 96 kJ = 26.6667 Wh
  • 97 kJ = 26.9444 Wh
  • 98 kJ = 27.2222 Wh
  • 99 kJ = 27.5 Wh
  • 100 kJ = 27.7778 Wh
  • 101 kJ = 28.0556 Wh
  • 102 kJ = 28.3333 Wh
  • 103 kJ = 28.6111 Wh
  • 104 kJ = 28.8889 Wh
  • 105 kJ = 29.1667 Wh
  • 106 kJ = 29.4444 Wh
  • 107 kJ = 29.7222 Wh
  • 108 kJ = 30 Wh
  • 109 kJ = 30.2778 Wh
  • 110 kJ = 30.5556 Wh
  • 111 kJ = 30.8333 Wh
  • 112 kJ = 31.1111 Wh
  • 113 kJ = 31.3889 Wh
  • 114 kJ = 31.6667 Wh
  • 115 kJ = 31.9444 Wh
  • 116 kJ = 32.2222 Wh
  • 117 kJ = 32.5 Wh
  • 118 kJ = 32.7778 Wh
  • 119 kJ = 33.0556 Wh
  • 120 kJ = 33.3333 Wh
  • 121 kJ = 33.6111 Wh
  • 122 kJ = 33.8889 Wh
  • 123 kJ = 34.1667 Wh
  • 124 kJ = 34.4444 Wh
  • 125 kJ = 34.7222 Wh
  • 126 kJ = 35 Wh
  • 127 kJ = 35.2778 Wh
  • 128 kJ = 35.5556 Wh
  • 129 kJ = 35.8333 Wh
  • 130 kJ = 36.1111 Wh
  • 131 kJ = 36.3889 Wh
  • 132 kJ = 36.6667 Wh
  • 133 kJ = 36.9444 Wh
  • 134 kJ = 37.2222 Wh
  • 135 kJ = 37.5 Wh
  • 136 kJ = 37.7778 Wh
  • 137 kJ = 38.0556 Wh
  • 138 kJ = 38.3333 Wh
  • 139 kJ = 38.6111 Wh
  • 140 kJ = 38.8889 Wh
  • 141 kJ = 39.1667 Wh
  • 142 kJ = 39.4444 Wh
  • 143 kJ = 39.7222 Wh
  • 144 kJ = 40 Wh
  • 145 kJ = 40.2778 Wh
  • 146 kJ = 40.5556 Wh
  • 147 kJ = 40.8333 Wh
  • 148 kJ = 41.1111 Wh
  • 149 kJ = 41.3889 Wh
  • 150 kJ = 41.6667 Wh
  • 151 kJ = 41.9444 Wh
  • 152 kJ = 42.2222 Wh
  • 153 kJ = 42.5 Wh
  • 154 kJ = 42.7778 Wh
  • 155 kJ = 43.0556 Wh
  • 156 kJ = 43.3333 Wh
  • 157 kJ = 43.6111 Wh
  • 158 kJ = 43.8889 Wh
  • 159 kJ = 44.1667 Wh
  • 160 kJ = 44.4444 Wh
  • 161 kJ = 44.7222 Wh
  • 162 kJ = 45 Wh
  • 163 kJ = 45.2778 Wh
  • 164 kJ = 45.5556 Wh
  • 165 kJ = 45.8333 Wh
  • 166 kJ = 46.1111 Wh
  • 167 kJ = 46.3889 Wh
  • 168 kJ = 46.6667 Wh
  • 169 kJ = 46.9444 Wh
  • 170 kJ = 47.2222 Wh
  • 171 kJ = 47.5 Wh
  • 172 kJ = 47.7778 Wh
  • 173 kJ = 48.0556 Wh
  • 174 kJ = 48.3333 Wh
  • 175 kJ = 48.6111 Wh
  • 176 kJ = 48.8889 Wh
  • 177 kJ = 49.1667 Wh
  • 178 kJ = 49.4444 Wh
  • 179 kJ = 49.7222 Wh
  • 180 kJ = 50 Wh
  • 181 kJ = 50.2778 Wh
  • 182 kJ = 50.5556 Wh
  • 183 kJ = 50.8333 Wh
  • 184 kJ = 51.1111 Wh
  • 185 kJ = 51.3889 Wh
  • 186 kJ = 51.6667 Wh
  • 187 kJ = 51.9444 Wh
  • 188 kJ = 52.2222 Wh
  • 189 kJ = 52.5 Wh
  • 190 kJ = 52.7778 Wh
  • 191 kJ = 53.0556 Wh
  • 192 kJ = 53.3333 Wh
  • 193 kJ = 53.6111 Wh
  • 194 kJ = 53.8889 Wh
  • 195 kJ = 54.1667 Wh
  • 196 kJ = 54.4444 Wh
  • 197 kJ = 54.7222 Wh
  • 198 kJ = 55 Wh
  • 199 kJ = 55.2778 Wh
  • 200 kJ = 55.5556 Wh
  • 205 kJ = 56.9444 Wh
  • 210 kJ = 58.3333 Wh
  • 215 kJ = 59.7222 Wh
  • 220 kJ = 61.1111 Wh
  • 225 kJ = 62.5 Wh
  • 230 kJ = 63.8889 Wh
  • 235 kJ = 65.2778 Wh
  • 240 kJ = 66.6667 Wh
  • 245 kJ = 68.0556 Wh
  • 250 kJ = 69.4444 Wh
  • 255 kJ = 70.8333 Wh
  • 260 kJ = 72.2222 Wh
  • 265 kJ = 73.6111 Wh
  • 270 kJ = 75 Wh
  • 275 kJ = 76.3889 Wh
  • 280 kJ = 77.7778 Wh
  • 285 kJ = 79.1667 Wh
  • 290 kJ = 80.5556 Wh
  • 295 kJ = 81.9444 Wh
  • 300 kJ = 83.3333 Wh
  • 305 kJ = 84.7222 Wh
  • 310 kJ = 86.1111 Wh
  • 315 kJ = 87.5 Wh
  • 320 kJ = 88.8889 Wh
  • 325 kJ = 90.2778 Wh
  • 330 kJ = 91.6667 Wh
  • 335 kJ = 93.0556 Wh
  • 340 kJ = 94.4444 Wh
  • 345 kJ = 95.8333 Wh
  • 350 kJ = 97.2222 Wh
  • 355 kJ = 98.6111 Wh
  • 360 kJ = 100 Wh
  • 365 kJ = 101.3889 Wh
  • 370 kJ = 102.7778 Wh
  • 375 kJ = 104.1667 Wh
  • 380 kJ = 105.5556 Wh
  • 385 kJ = 106.9444 Wh
  • 390 kJ = 108.3333 Wh
  • 395 kJ = 109.7222 Wh
  • 400 kJ = 111.1111 Wh
  • 405 kJ = 112.5 Wh
  • 410 kJ = 113.8889 Wh
  • 415 kJ = 115.2778 Wh
  • 420 kJ = 116.6667 Wh
  • 425 kJ = 118.0556 Wh
  • 430 kJ = 119.4444 Wh
  • 435 kJ = 120.8333 Wh
  • 440 kJ = 122.2222 Wh
  • 445 kJ = 123.6111 Wh
  • 450 kJ = 125 Wh
  • 455 kJ = 126.3889 Wh
  • 460 kJ = 127.7778 Wh
  • 465 kJ = 129.1667 Wh
  • 470 kJ = 130.5556 Wh
  • 475 kJ = 131.9444 Wh
  • 480 kJ = 133.3333 Wh
  • 485 kJ = 134.7222 Wh
  • 490 kJ = 136.1111 Wh
  • 495 kJ = 137.5 Wh
  • 500 kJ = 138.8889 Wh
  • 510 kJ = 141.6667 Wh
  • 520 kJ = 144.4444 Wh
  • 530 kJ = 147.2222 Wh
  • 540 kJ = 150 Wh
  • 550 kJ = 152.7778 Wh
  • 560 kJ = 155.5556 Wh
  • 570 kJ = 158.3333 Wh
  • 580 kJ = 161.1111 Wh
  • 590 kJ = 163.8889 Wh
  • 600 kJ = 166.6667 Wh
  • 610 kJ = 169.4444 Wh
  • 620 kJ = 172.2222 Wh
  • 630 kJ = 175 Wh
  • 640 kJ = 177.7778 Wh
  • 650 kJ = 180.5556 Wh
  • 660 kJ = 183.3333 Wh
  • 670 kJ = 186.1111 Wh
  • 680 kJ = 188.8889 Wh
  • 690 kJ = 191.6667 Wh
  • 700 kJ = 194.4444 Wh
  • 710 kJ = 197.2222 Wh
  • 720 kJ = 200 Wh
  • 730 kJ = 202.7778 Wh
  • 740 kJ = 205.5556 Wh
  • 750 kJ = 208.3333 Wh
  • 760 kJ = 211.1111 Wh
  • 770 kJ = 213.8889 Wh
  • 780 kJ = 216.6667 Wh
  • 790 kJ = 219.4444 Wh
  • 800 kJ = 222.2222 Wh
  • 810 kJ = 225 Wh
  • 820 kJ = 227.7778 Wh
  • 830 kJ = 230.5556 Wh
  • 840 kJ = 233.3333 Wh
  • 850 kJ = 236.1111 Wh
  • 860 kJ = 238.8889 Wh
  • 870 kJ = 241.6667 Wh
  • 880 kJ = 244.4444 Wh
  • 890 kJ = 247.2222 Wh
  • 900 kJ = 250 Wh
  • 910 kJ = 252.7778 Wh
  • 920 kJ = 255.5556 Wh
  • 930 kJ = 258.3333 Wh
  • 940 kJ = 261.1111 Wh
  • 950 kJ = 263.8889 Wh
  • 960 kJ = 266.6667 Wh
  • 970 kJ = 269.4444 Wh
  • 980 kJ = 272.2222 Wh
  • 990 kJ = 275 Wh
  • 1,000 kJ = 277.7778 Wh
  • 1,025 kJ = 284.7222 Wh
  • 1,050 kJ = 291.6667 Wh
  • 1,075 kJ = 298.6111 Wh
  • 1,100 kJ = 305.5556 Wh
  • 1,125 kJ = 312.5 Wh
  • 1,150 kJ = 319.4444 Wh
  • 1,175 kJ = 326.3889 Wh
  • 1,200 kJ = 333.3333 Wh
  • 1,225 kJ = 340.2778 Wh
  • 1,250 kJ = 347.2222 Wh
  • 1,275 kJ = 354.1667 Wh
  • 1,300 kJ = 361.1111 Wh
  • 1,325 kJ = 368.0556 Wh
  • 1,350 kJ = 375 Wh
  • 1,375 kJ = 381.9444 Wh
  • 1,400 kJ = 388.8889 Wh
  • 1,425 kJ = 395.8333 Wh
  • 1,450 kJ = 402.7778 Wh
  • 1,475 kJ = 409.7222 Wh
  • 1,500 kJ = 416.6667 Wh
  • 1,525 kJ = 423.6111 Wh
  • 1,550 kJ = 430.5556 Wh
  • 1,575 kJ = 437.5 Wh
  • 1,600 kJ = 444.4444 Wh
  • 1,625 kJ = 451.3889 Wh
  • 1,650 kJ = 458.3333 Wh
  • 1,675 kJ = 465.2778 Wh
  • 1,700 kJ = 472.2222 Wh
  • 1,725 kJ = 479.1667 Wh
  • 1,750 kJ = 486.1111 Wh
  • 1,775 kJ = 493.0556 Wh
  • 1,800 kJ = 500 Wh
  • 1,825 kJ = 506.9444 Wh
  • 1,850 kJ = 513.8889 Wh
  • 1,875 kJ = 520.8333 Wh
  • 1,900 kJ = 527.7778 Wh
  • 1,925 kJ = 534.7222 Wh
  • 1,950 kJ = 541.6667 Wh
  • 1,975 kJ = 548.6111 Wh
  • 2,000 kJ = 555.5556 Wh
  • 2,050 kJ = 569.4444 Wh
  • 2,100 kJ = 583.3333 Wh
  • 2,150 kJ = 597.2222 Wh
  • 2,200 kJ = 611.1111 Wh
  • 2,250 kJ = 625 Wh
  • 2,300 kJ = 638.8889 Wh
  • 2,350 kJ = 652.7778 Wh
  • 2,400 kJ = 666.6667 Wh
  • 2,450 kJ = 680.5556 Wh
  • 2,500 kJ = 694.4444 Wh
  • 2,550 kJ = 708.3333 Wh
  • 2,600 kJ = 722.2222 Wh
  • 2,650 kJ = 736.1111 Wh
  • 2,700 kJ = 750 Wh
  • 2,750 kJ = 763.8889 Wh
  • 2,800 kJ = 777.7778 Wh
  • 2,850 kJ = 791.6667 Wh
  • 2,900 kJ = 805.5556 Wh
  • 2,950 kJ = 819.4444 Wh
  • 3,000 kJ = 833.3333 Wh
  • 3,050 kJ = 847.2222 Wh
  • 3,100 kJ = 861.1111 Wh
  • 3,150 kJ = 875 Wh
  • 3,200 kJ = 888.8889 Wh
  • 3,250 kJ = 902.7778 Wh
  • 3,300 kJ = 916.6667 Wh
  • 3,350 kJ = 930.5556 Wh
  • 3,400 kJ = 944.4444 Wh
  • 3,450 kJ = 958.3333 Wh
  • 3,500 kJ = 972.2222 Wh
  • 3,550 kJ = 986.1111 Wh
  • 3,600 kJ = 1,000 Wh
  • 3,650 kJ = 1,013.8889 Wh
  • 3,700 kJ = 1,027.7778 Wh
  • 3,750 kJ = 1,041.6667 Wh
  • 3,800 kJ = 1,055.5556 Wh
  • 3,850 kJ = 1,069.4444 Wh
  • 3,900 kJ = 1,083.3333 Wh
  • 3,950 kJ = 1,097.2222 Wh
  • 4,000 kJ = 1,111.1111 Wh
  • 4,050 kJ = 1,125 Wh
  • 4,100 kJ = 1,138.8889 Wh
  • 4,150 kJ = 1,152.7778 Wh
  • 4,200 kJ = 1,166.6667 Wh
  • 4,250 kJ = 1,180.5556 Wh
  • 4,300 kJ = 1,194.4444 Wh
  • 4,350 kJ = 1,208.3333 Wh
  • 4,400 kJ = 1,222.2222 Wh
  • 4,450 kJ = 1,236.1111 Wh
  • 4,500 kJ = 1,250 Wh
  • 4,550 kJ = 1,263.8889 Wh
  • 4,600 kJ = 1,277.7778 Wh
  • 4,650 kJ = 1,291.6667 Wh
  • 4,700 kJ = 1,305.5556 Wh
  • 4,750 kJ = 1,319.4444 Wh
  • 4,800 kJ = 1,333.3333 Wh
  • 4,850 kJ = 1,347.2222 Wh
  • 4,900 kJ = 1,361.1111 Wh
  • 4,950 kJ = 1,375 Wh
  • 5,000 kJ = 1,388.8889 Wh
  • 5,100 kJ = 1,416.6667 Wh
  • 5,200 kJ = 1,444.4444 Wh
  • 5,300 kJ = 1,472.2222 Wh
  • 5,400 kJ = 1,500 Wh
  • 5,500 kJ = 1,527.7778 Wh
  • 5,600 kJ = 1,555.5556 Wh
  • 5,700 kJ = 1,583.3333 Wh
  • 5,800 kJ = 1,611.1111 Wh
  • 5,900 kJ = 1,638.8889 Wh
  • 6,000 kJ = 1,666.6667 Wh
  • 6,100 kJ = 1,694.4444 Wh
  • 6,200 kJ = 1,722.2222 Wh
  • 6,300 kJ = 1,750 Wh
  • 6,400 kJ = 1,777.7778 Wh
  • 6,500 kJ = 1,805.5556 Wh
  • 6,600 kJ = 1,833.3333 Wh
  • 6,700 kJ = 1,861.1111 Wh
  • 6,800 kJ = 1,888.8889 Wh
  • 6,900 kJ = 1,916.6667 Wh
  • 7,000 kJ = 1,944.4444 Wh
  • 7,100 kJ = 1,972.2222 Wh
  • 7,200 kJ = 2,000 Wh
  • 7,300 kJ = 2,027.7778 Wh
  • 7,400 kJ = 2,055.5556 Wh
  • 7,500 kJ = 2,083.3333 Wh
  • 7,600 kJ = 2,111.1111 Wh
  • 7,700 kJ = 2,138.8889 Wh
  • 7,800 kJ = 2,166.6667 Wh
  • 7,900 kJ = 2,194.4444 Wh
  • 8,000 kJ = 2,222.2222 Wh
  • 8,100 kJ = 2,250 Wh
  • 8,200 kJ = 2,277.7778 Wh
  • 8,300 kJ = 2,305.5556 Wh
  • 8,400 kJ = 2,333.3333 Wh
  • 8,500 kJ = 2,361.1111 Wh
  • 8,600 kJ = 2,388.8889 Wh
  • 8,700 kJ = 2,416.6667 Wh
  • 8,800 kJ = 2,444.4444 Wh
  • 8,900 kJ = 2,472.2222 Wh
  • 9,000 kJ = 2,500 Wh
  • 9,100 kJ = 2,527.7778 Wh
  • 9,200 kJ = 2,555.5556 Wh
  • 9,300 kJ = 2,583.3333 Wh
  • 9,400 kJ = 2,611.1111 Wh
  • 9,500 kJ = 2,638.8889 Wh
  • 9,600 kJ = 2,666.6667 Wh
  • 9,700 kJ = 2,694.4444 Wh
  • 9,800 kJ = 2,722.2222 Wh
  • 9,900 kJ = 2,750 Wh
  • 10,000 kJ = 2,777.7778 Wh

Factors from the SI brochure (BIPM) and from NIST Special Publication 811. Methodology & sources.

Related conversions

Watt-hours to kilojoules Energy kilocalories to kilojoules (kcal to kJ) kJ to kcal kilojoules to kilowatt-hours (kJ to kWh) kilowatt-hours to kilojoules (kWh to kJ) Kilowatt-hours to joules Kilowatt-hours to kilocalories Kilowatt-hours to watt-hours