The milliwatt-hour (mWh) might seem like a small unit of energy, but when you consider the burgeoning demand for portable technology, it plays a vital role in everyday electronics. This unit is commonly used to measure the energy capacity of small batteries, such as those found in smartphones, earbuds, and other miniature devices. Interestingly, even though a single milliwatt-hour is just a thousandth of a watt-hour, the overall efficiency of devices is often improved by optimizing such seemingly tiny units of energy.
For context, when you binge your favorite series on a compact digital device, you can thank the precise calculation of mWh for maximizing battery life without sacrificing performance. As technology advances, the milliwatt-hour will continue to dictate innovations in energy efficiency, making our devices smarter and more sustainable.
A kilocalorie, often referred to simply as a “calorie” in the context of food and nutrition, is a unit of energy that equals 1,000 small calories. It’s the measure used to indicate how much energy food can provide to the body, crucial for fueling daily activities and maintaining body functions. Interestingly, the term kilocalorie has its roots in the Latin “calor” meaning heat, as it was originally tied to measuring energy in terms of heating.
In the world of nutrition, one kilocalorie is the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius. Despite the prevalence of kilocalories in diet and health discussions, they were initially developed for scientific purposes during studies on thermodynamics in the 19th century. So, every time you check the calorie content on a food label, you’re engaging with a concept that has been bridging chemistry, physics, and nutrition for centuries!
Milliwatt-hours | Kilocalories |
---|---|
0
mWh
|
0
kcal
|
1000
mWh
|
0.860421
kcal
|
2000
mWh
|
1.72084
kcal
|
3000
mWh
|
2.58126
kcal
|
4000
mWh
|
3.44168
kcal
|
5000
mWh
|
4.3021
kcal
|
6000
mWh
|
5.16252
kcal
|
7000
mWh
|
6.02294
kcal
|
8000
mWh
|
6.88337
kcal
|
9000
mWh
|
7.74379
kcal
|
10000
mWh
|
8.60421
kcal
|
11000
mWh
|
9.46463
kcal
|
12000
mWh
|
10.32505
kcal
|
13000
mWh
|
11.18547
kcal
|
14000
mWh
|
12.04589
kcal
|
15000
mWh
|
12.90631
kcal
|
16000
mWh
|
13.76673
kcal
|
17000
mWh
|
14.62715
kcal
|
18000
mWh
|
15.48757
kcal
|
19000
mWh
|
16.34799
kcal
|
20000
mWh
|
17.20841
kcal
|
21000
mWh
|
18.06883
kcal
|
22000
mWh
|
18.92925
kcal
|
23000
mWh
|
19.78967
kcal
|
24000
mWh
|
20.6501
kcal
|
25000
mWh
|
21.51052
kcal
|
26000
mWh
|
22.37094
kcal
|
27000
mWh
|
23.23136
kcal
|
28000
mWh
|
24.09178
kcal
|
29000
mWh
|
24.9522
kcal
|
30000
mWh
|
25.81262
kcal
|
31000
mWh
|
26.67304
kcal
|
32000
mWh
|
27.53346
kcal
|
33000
mWh
|
28.39388
kcal
|
34000
mWh
|
29.2543
kcal
|
35000
mWh
|
30.11472
kcal
|
36000
mWh
|
30.97514
kcal
|
37000
mWh
|
31.83556
kcal
|
38000
mWh
|
32.69598
kcal
|
39000
mWh
|
33.55641
kcal
|
40000
mWh
|
34.41683
kcal
|
41000
mWh
|
35.27725
kcal
|
42000
mWh
|
36.13767
kcal
|
43000
mWh
|
36.99809
kcal
|
44000
mWh
|
37.85851
kcal
|
45000
mWh
|
38.71893
kcal
|
46000
mWh
|
39.57935
kcal
|
47000
mWh
|
40.43977
kcal
|
48000
mWh
|
41.30019
kcal
|
49000
mWh
|
42.16061
kcal
|
50000
mWh
|
43.02103
kcal
|
51000
mWh
|
43.88145
kcal
|
52000
mWh
|
44.74187
kcal
|
53000
mWh
|
45.60229
kcal
|
54000
mWh
|
46.46272
kcal
|
55000
mWh
|
47.32314
kcal
|
56000
mWh
|
48.18356
kcal
|
57000
mWh
|
49.04398
kcal
|
58000
mWh
|
49.9044
kcal
|
59000
mWh
|
50.76482
kcal
|
60000
mWh
|
51.62524
kcal
|
61000
mWh
|
52.48566
kcal
|
62000
mWh
|
53.34608
kcal
|
63000
mWh
|
54.2065
kcal
|
64000
mWh
|
55.06692
kcal
|
65000
mWh
|
55.92734
kcal
|
66000
mWh
|
56.78776
kcal
|
67000
mWh
|
57.64818
kcal
|
68000
mWh
|
58.5086
kcal
|
69000
mWh
|
59.36902
kcal
|
70000
mWh
|
60.22945
kcal
|
71000
mWh
|
61.08987
kcal
|
72000
mWh
|
61.95029
kcal
|
73000
mWh
|
62.81071
kcal
|
74000
mWh
|
63.67113
kcal
|
75000
mWh
|
64.53155
kcal
|
76000
mWh
|
65.39197
kcal
|
77000
mWh
|
66.25239
kcal
|
78000
mWh
|
67.11281
kcal
|
79000
mWh
|
67.97323
kcal
|
80000
mWh
|
68.83365
kcal
|
81000
mWh
|
69.69407
kcal
|
82000
mWh
|
70.55449
kcal
|
83000
mWh
|
71.41491
kcal
|
84000
mWh
|
72.27533
kcal
|
85000
mWh
|
73.13576
kcal
|
86000
mWh
|
73.99618
kcal
|
87000
mWh
|
74.8566
kcal
|
88000
mWh
|
75.71702
kcal
|
89000
mWh
|
76.57744
kcal
|
90000
mWh
|
77.43786
kcal
|
91000
mWh
|
78.29828
kcal
|
92000
mWh
|
79.1587
kcal
|
93000
mWh
|
80.01912
kcal
|
94000
mWh
|
80.87954
kcal
|
95000
mWh
|
81.73996
kcal
|
96000
mWh
|
82.60038
kcal
|
97000
mWh
|
83.4608
kcal
|
98000
mWh
|
84.32122
kcal
|
99000
mWh
|
85.18164
kcal
|
100000
mWh
|
86.04207
kcal
|
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