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.
The megawatt-hour (MWh) is a unit of energy that measures electricity production, consumption, or energy flow over time. It is commonly used to bill large-scale electricity consumers, such as factories or entire cities. To put it into perspective, one megawatt-hour can power about 330 homes for an hour or a single home for 330 hours! In the realm of renewable energy, just one megawatt-hour of wind energy can offset over 1,100 pounds of carbon dioxide emissions—a significant environmental benefit.
Moreover, the world’s energy needs are so vast that in 2022, global electricity consumption soared to over 26,000 terawatt-hours (TWh), where one terawatt-hour equates to one million megawatt-hours. This highlights how crucial units like the MWh are in understanding and managing our energy use and impact.
Milliwatt-hours | Megawatt-hours |
---|---|
0
mWh
|
0
MWh
|
1000
mWh
|
0.000001
MWh
|
2000
mWh
|
0.000002
MWh
|
3000
mWh
|
0.000003
MWh
|
4000
mWh
|
0.000004
MWh
|
5000
mWh
|
0.000005
MWh
|
6000
mWh
|
0.000006
MWh
|
7000
mWh
|
0.000007
MWh
|
8000
mWh
|
0.000008
MWh
|
9000
mWh
|
0.000009
MWh
|
10000
mWh
|
0.00001
MWh
|
11000
mWh
|
0.000011
MWh
|
12000
mWh
|
0.000012
MWh
|
13000
mWh
|
0.000013
MWh
|
14000
mWh
|
0.000014
MWh
|
15000
mWh
|
0.000015
MWh
|
16000
mWh
|
0.000016
MWh
|
17000
mWh
|
0.000017
MWh
|
18000
mWh
|
0.000018
MWh
|
19000
mWh
|
0.000019
MWh
|
20000
mWh
|
0.00002
MWh
|
21000
mWh
|
0.000021
MWh
|
22000
mWh
|
0.000022
MWh
|
23000
mWh
|
0.000023
MWh
|
24000
mWh
|
0.000024
MWh
|
25000
mWh
|
0.000025
MWh
|
26000
mWh
|
0.000026
MWh
|
27000
mWh
|
0.000027
MWh
|
28000
mWh
|
0.000028
MWh
|
29000
mWh
|
0.000029
MWh
|
30000
mWh
|
0.00003
MWh
|
31000
mWh
|
0.000031
MWh
|
32000
mWh
|
0.000032
MWh
|
33000
mWh
|
0.000033
MWh
|
34000
mWh
|
0.000034
MWh
|
35000
mWh
|
0.000035
MWh
|
36000
mWh
|
0.000036
MWh
|
37000
mWh
|
0.000037
MWh
|
38000
mWh
|
0.000038
MWh
|
39000
mWh
|
0.000039
MWh
|
40000
mWh
|
0.00004
MWh
|
41000
mWh
|
0.000041
MWh
|
42000
mWh
|
0.000042
MWh
|
43000
mWh
|
0.000043
MWh
|
44000
mWh
|
0.000044
MWh
|
45000
mWh
|
0.000045
MWh
|
46000
mWh
|
0.000046
MWh
|
47000
mWh
|
0.000047
MWh
|
48000
mWh
|
0.000048
MWh
|
49000
mWh
|
0.000049
MWh
|
50000
mWh
|
0.00005
MWh
|
51000
mWh
|
0.000051
MWh
|
52000
mWh
|
0.000052
MWh
|
53000
mWh
|
0.000053
MWh
|
54000
mWh
|
0.000054
MWh
|
55000
mWh
|
0.000055
MWh
|
56000
mWh
|
0.000056
MWh
|
57000
mWh
|
0.000057
MWh
|
58000
mWh
|
0.000058
MWh
|
59000
mWh
|
0.000059
MWh
|
60000
mWh
|
0.00006
MWh
|
61000
mWh
|
0.000061
MWh
|
62000
mWh
|
0.000062
MWh
|
63000
mWh
|
0.000063
MWh
|
64000
mWh
|
0.000064
MWh
|
65000
mWh
|
0.000065
MWh
|
66000
mWh
|
0.000066
MWh
|
67000
mWh
|
0.000067
MWh
|
68000
mWh
|
0.000068
MWh
|
69000
mWh
|
0.000069
MWh
|
70000
mWh
|
0.00007
MWh
|
71000
mWh
|
0.000071
MWh
|
72000
mWh
|
0.000072
MWh
|
73000
mWh
|
0.000073
MWh
|
74000
mWh
|
0.000074
MWh
|
75000
mWh
|
0.000075
MWh
|
76000
mWh
|
0.000076
MWh
|
77000
mWh
|
0.000077
MWh
|
78000
mWh
|
0.000078
MWh
|
79000
mWh
|
0.000079
MWh
|
80000
mWh
|
0.00008
MWh
|
81000
mWh
|
0.000081
MWh
|
82000
mWh
|
0.000082
MWh
|
83000
mWh
|
0.000083
MWh
|
84000
mWh
|
0.000084
MWh
|
85000
mWh
|
0.000085
MWh
|
86000
mWh
|
0.000086
MWh
|
87000
mWh
|
0.000087
MWh
|
88000
mWh
|
0.000088
MWh
|
89000
mWh
|
0.000089
MWh
|
90000
mWh
|
0.00009
MWh
|
91000
mWh
|
0.000091
MWh
|
92000
mWh
|
0.000092
MWh
|
93000
mWh
|
0.000093
MWh
|
94000
mWh
|
0.000094
MWh
|
95000
mWh
|
0.000095
MWh
|
96000
mWh
|
0.000096
MWh
|
97000
mWh
|
0.000097
MWh
|
98000
mWh
|
0.000098
MWh
|
99000
mWh
|
0.000099
MWh
|
100000
mWh
|
0.0001
MWh
|
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