The calorie, commonly associated with food energy, originally measured heat in physics. One calorie is the amount of heat needed to raise the temperature of 1 gram of water by 1 degree Celsius. Despite what food packaging might suggest, when we count calories, we are typically referring to kilocalories, which equals 1,000 of these small calories. This means that when you see a snack label stating it’s 100 calories, it’s actually 100 kilocalories, or 100,000 calories in scientific terms!

Interestingly, the calorie became a popular unit due to its early use in nutrition studies and its role in determining food’s energy content. This is crucial, as it helps in planning and maintaining balanced diets and understanding energy expenditure for health and fitness.

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The watt-hour (Wh) is a unit of energy that measures the amount of electricity consumed or generated over time. It is the energy equivalent to one watt of power consumed for one hour. While electricity bills commonly display kilowatt-hours (kWh), understanding watt-hours can give you clearer insights into the energy efficiency of your household. For instance, a 60-watt incandescent light bulb running for one hour uses 60 watt-hours of electricity, while an energy-efficient LED bulb might only use around 10 watt-hours for the same illumination.

Interestingly, the concept of the watt-hour helps in comprehending renewable energy systems. Solar panels, for example, are rated in watts, but their output over time is often expressed in watt-hours or kilowatt-hours. Knowing this can help you assess how much energy your solar array could generate or your battery storage can hold, emphasizing the real value of alternative energy sources.

Calories

Watt-hours

0 cal

0 Wh

10 cal

0.0116222 Wh

20 cal

0.0232444 Wh

30 cal

0.0348667 Wh

40 cal

0.0464889 Wh

50 cal

0.0581111 Wh

60 cal

0.0697333 Wh

70 cal

0.0813556 Wh

80 cal

0.0929778 Wh

90 cal

0.1046 Wh

100 cal

0.116222 Wh

110 cal

0.127844 Wh

120 cal

0.139467 Wh

130 cal

0.151089 Wh

140 cal

0.162711 Wh

150 cal

0.174333 Wh

160 cal

0.185956 Wh

170 cal

0.197578 Wh

180 cal

0.2092 Wh

190 cal

0.220822 Wh

200 cal

0.232444 Wh

210 cal

0.244067 Wh

220 cal

0.255689 Wh

230 cal

0.267311 Wh

240 cal

0.278933 Wh

250 cal

0.290556 Wh

260 cal

0.302178 Wh

270 cal

0.3138 Wh

280 cal

0.325422 Wh

290 cal

0.337044 Wh

300 cal

0.348667 Wh

310 cal

0.360289 Wh

320 cal

0.371911 Wh

330 cal

0.383533 Wh

340 cal

0.395156 Wh

350 cal

0.406778 Wh

360 cal

0.4184 Wh

370 cal

0.430022 Wh

380 cal

0.441644 Wh

390 cal

0.453267 Wh

400 cal

0.464889 Wh

410 cal

0.476511 Wh

420 cal

0.488133 Wh

430 cal

0.499756 Wh

440 cal

0.511378 Wh

450 cal

0.523 Wh

460 cal

0.534622 Wh

470 cal

0.546244 Wh

480 cal

0.557867 Wh

490 cal

0.569489 Wh

500 cal

0.581111 Wh

510 cal

0.592733 Wh

520 cal

0.604356 Wh

530 cal

0.615978 Wh

540 cal

0.6276 Wh

550 cal

0.639222 Wh

560 cal

0.650844 Wh

570 cal

0.662467 Wh

580 cal

0.674089 Wh

590 cal

0.685711 Wh

600 cal

0.697333 Wh

610 cal

0.708956 Wh

620 cal

0.720578 Wh

630 cal

0.7322 Wh

640 cal

0.743822 Wh

650 cal

0.755444 Wh

660 cal

0.767067 Wh

670 cal

0.778689 Wh

680 cal

0.790311 Wh

690 cal

0.801933 Wh

700 cal

0.813556 Wh

710 cal

0.825178 Wh

720 cal

0.8368 Wh

730 cal

0.848422 Wh

740 cal

0.860044 Wh

750 cal

0.871667 Wh

760 cal

0.883289 Wh

770 cal

0.894911 Wh

780 cal

0.906533 Wh

790 cal

0.918156 Wh

800 cal

0.929778 Wh

810 cal

0.9414 Wh

820 cal

0.953022 Wh

830 cal

0.964644 Wh

840 cal

0.976267 Wh

850 cal

0.987889 Wh

860 cal

0.999511 Wh

870 cal

1.01113 Wh

880 cal

1.02276 Wh

890 cal

1.03438 Wh

900 cal

1.046 Wh

910 cal

1.05762 Wh

920 cal

1.06924 Wh

930 cal

1.08087 Wh

940 cal

1.09249 Wh

950 cal

1.10411 Wh

960 cal

1.11573 Wh

970 cal

1.12736 Wh

980 cal

1.13898 Wh

990 cal

1.1506 Wh

1000 cal

1.16222 Wh

Conversion

Calories to Watt-seconds

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Calories to Watt-minutes

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Calories to Milliwatt-hours

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Calories to Kilowatt-hours

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Calories to Megawatt-hours

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Calories to Gigawatt-hours

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Calories to Joules

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Calories to Kilojoules

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Calories to Megajoules

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Calories to Gigajoules

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Calories to Kilocalories

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Calories to Watt-hours Conversion

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> Calories to Watt-hours Conversion Table

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:: Energy Units

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:: Energy Units

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