Calories to Watts (cal → W)
Formula
1 cal = 4.184 WConversion Table
| cal | W |
|---|---|
| 0 | 0 |
| 1.0000 | 4.1840 |
| 2.0000 | 8.3680 |
| 3.0000 | 12.552 |
| 4.0000 | 16.736 |
| 5.0000 | 20.920 |
| 6.0000 | 25.104 |
| 7.0000 | 29.288 |
| 8.0000 | 33.472 |
| 9.0000 | 37.656 |
| 10.000 | 41.840 |
| 11.000 | 46.024 |
| 12.000 | 50.208 |
| 13.000 | 54.392 |
| 14.000 | 58.576 |
| 15.000 | 62.760 |
| 16.000 | 66.944 |
| 17.000 | 71.128 |
| 18.000 | 75.312 |
| 19.000 | 79.496 |
| cal | W |
|---|---|
| 20.000 | 83.680 |
| 21.000 | 87.864 |
| 22.000 | 92.048 |
| 23.000 | 96.232 |
| 24.000 | 100.42 |
| 25.000 | 104.60 |
| 26.000 | 108.78 |
| 27.000 | 112.97 |
| 28.000 | 117.15 |
| 29.000 | 121.34 |
| 30.000 | 125.52 |
| 31.000 | 129.70 |
| 32.000 | 133.89 |
| 33.000 | 138.07 |
| 34.000 | 142.26 |
| 35.000 | 146.44 |
| 36.000 | 150.62 |
| 37.000 | 154.81 |
| 38.000 | 158.99 |
| 39.000 | 163.18 |
| cal | W |
|---|---|
| 40.000 | 167.36 |
| 41.000 | 171.54 |
| 42.000 | 175.73 |
| 43.000 | 179.91 |
| 44.000 | 184.10 |
| 45.000 | 188.28 |
| 46.000 | 192.46 |
| 47.000 | 196.65 |
| 48.000 | 200.83 |
| 49.000 | 205.02 |
| 50.000 | 209.20 |
| 51.000 | 213.38 |
| 52.000 | 217.57 |
| 53.000 | 221.75 |
| 54.000 | 225.94 |
| 55.000 | 230.12 |
| 56.000 | 234.30 |
| 57.000 | 238.49 |
| 58.000 | 242.67 |
| 59.000 | 246.86 |
| cal | W |
|---|---|
| 60.000 | 251.04 |
| 61.000 | 255.22 |
| 62.000 | 259.41 |
| 63.000 | 263.59 |
| 64.000 | 267.78 |
| 65.000 | 271.96 |
| 66.000 | 276.14 |
| 67.000 | 280.33 |
| 68.000 | 284.51 |
| 69.000 | 288.70 |
| 70.000 | 292.88 |
| 71.000 | 297.06 |
| 72.000 | 301.25 |
| 73.000 | 305.43 |
| 74.000 | 309.62 |
| 75.000 | 313.80 |
| 76.000 | 317.98 |
| 77.000 | 322.17 |
| 78.000 | 326.35 |
| 79.000 | 330.54 |
Calories to Watts Conversion
Converting Calories (cal) to Watts (W) is a common energy and power conversion. 1 cal equals 4.184 W. For example, 100 cal is equal to 418.4 W.
Quick Mental Math: Calories to Watts
If 0.239 calories is released in 1 second, it is about 1 watt.
Why is converting Calories to Watts tricky?
calories to watts mixes energy with power, so the missing time step is the trap: the same energy gives different power over 1 second and 1 hour.
Quick Reference Values
1 cal = 4.184 W. 5 cal = 20.92 W. 10 cal = 41.84 W. 25 cal = 104.6 W. 50 cal = 209.2 W. 100 cal = 418.4 W.
What is Calories?
Calories (cal) is a unit of energy and power. The calorie (cal) is defined as exactly 4.184 joules. It quantifies the energy needed to raise the temperature of one gram of water by 1°C under standard conditions. The calorie is widely used in chemistry and nutrition to express energy content [bipm-si-brochure]. The calorie was introduced in the early 19th century by Nicolas Clément and standardized internationally in the 20th century. It was adopted for practical energy measurement in chemistry and food science before the joule became the SI unit [bipm-si-brochure]. Calories remain common in food labeling, nutrition, and chemistry worldwide. The dietary Calorie (kcal) is prevalent in the US, Europe, and many countries while scientific contexts prefer the joule [bipm-si-brochure].
What is Watts?
Watts (W) is a unit of energy and power. The watt (W) is the SI unit of power, defined as one joule per second (1 W = 1 J/s). It measures the rate of energy transfer or conversion. The watt is named after James Watt and standardized by the BIPM according to the International System of Units [bipm-si-brochure]. Named after engineer James Watt in the late 19th century, the watt was adopted officially by the CIPM and BIPM to quantify mechanical and electrical power consistently. It became part of the SI base units in 1960 [bipm-si-brochure]. Watts measure power output and consumption in electrical, mechanical, and thermal systems globally. It is used across industries, including electronics, automotive, and power generation, following ISO and NIST standards [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: calorie, cal, calory, calo, watt, wat, wats, wattss. All of these refer to the Calories to Watts conversion.