The gallon is a versatile unit of volume with intriguing historical roots and multiple variations. Originating from Old Northern French “galon,” it has been used since at least the 13th century for measuring wine and beer. In today’s world, the gallon has taken on distinct forms in different regions, notably the US gallon, used predominantly for liquid measurements, and the British imperial gallon. Interestingly, the US gallon is 3.785 liters, while the imperial gallon is 4.546 liters, which can create confusion for travelers and international trade involving fuel or beverages.
One of the most captivating aspects of the gallon is its role in the global economy, especially in the context of oil production. The US liquid gallon is often associated with gasoline consumption, where even slight changes in the gallon price can have significant economic repercussions. This widespread usage underscores the gallon’s importance beyond its mere measurement function, influencing geopolitical and economic landscapes.
A megalitre is a metric unit of volume equivalent to one million liters. Imagine a cube with 1,000 meters on each side; that’s the colossal size of one megalitre. This unit is commonly used in Australia for measuring large-scale water reserves, water treatment plants, and agricultural water consumption. For a visual perspective, one megalitre could fill roughly half an Olympic-sized swimming pool, highlighting its vast capacity.
The term “megalitre” isn’t just a unit of volume; it represents a crucial component in water resource management. In drought-prone areas and rapidly growing urban centers, measuring water in megalitres helps manage and oversee conservation efforts, ensuring sustainable water use and responsibility toward preservation initiatives. By presenting water quantities in these large volumes, the enormity of consumption and the necessary resources become abundantly clear.
| Gallons | Megalitres |
|---|---|
0
gal
|
0
Ml
|
0.5
gal
|
1.89271e-6
Ml
|
1
gal
|
3.78541e-6
Ml
|
1.5
gal
|
5.67812e-6
Ml
|
2
gal
|
7.57082e-6
Ml
|
2.5
gal
|
9.46353e-6
Ml
|
3
gal
|
1.13562e-5
Ml
|
3.5
gal
|
1.32489e-5
Ml
|
4
gal
|
1.51416e-5
Ml
|
4.5
gal
|
1.70344e-5
Ml
|
5
gal
|
1.89271e-5
Ml
|
5.5
gal
|
2.08198e-5
Ml
|
6
gal
|
2.27125e-5
Ml
|
6.5
gal
|
2.46052e-5
Ml
|
7
gal
|
2.64979e-5
Ml
|
7.5
gal
|
2.83906e-5
Ml
|
8
gal
|
3.02833e-5
Ml
|
8.5
gal
|
0.000032176
Ml
|
9
gal
|
3.40687e-5
Ml
|
9.5
gal
|
3.59614e-5
Ml
|
10
gal
|
3.78541e-5
Ml
|
10.5
gal
|
3.97468e-5
Ml
|
11
gal
|
4.16395e-5
Ml
|
11.5
gal
|
4.35322e-5
Ml
|
12
gal
|
4.54249e-5
Ml
|
12.5
gal
|
4.73176e-5
Ml
|
13
gal
|
4.92104e-5
Ml
|
13.5
gal
|
5.11031e-5
Ml
|
14
gal
|
5.29958e-5
Ml
|
14.5
gal
|
5.48885e-5
Ml
|
15
gal
|
5.67812e-5
Ml
|
15.5
gal
|
5.86739e-5
Ml
|
16
gal
|
6.05666e-5
Ml
|
16.5
gal
|
6.24593e-5
Ml
|
17
gal
|
0.000064352
Ml
|
17.5
gal
|
6.62447e-5
Ml
|
18
gal
|
6.81374e-5
Ml
|
18.5
gal
|
7.00301e-5
Ml
|
19
gal
|
7.19228e-5
Ml
|
19.5
gal
|
7.38155e-5
Ml
|
20
gal
|
7.57082e-5
Ml
|
20.5
gal
|
7.76009e-5
Ml
|
21
gal
|
7.94936e-5
Ml
|
21.5
gal
|
8.13864e-5
Ml
|
22
gal
|
8.32791e-5
Ml
|
22.5
gal
|
8.51718e-5
Ml
|
23
gal
|
8.70645e-5
Ml
|
23.5
gal
|
8.89572e-5
Ml
|
24
gal
|
9.08499e-5
Ml
|
24.5
gal
|
9.27426e-5
Ml
|
25
gal
|
9.46353e-5
Ml
|
25.5
gal
|
0.000096528
Ml
|
26
gal
|
9.84207e-5
Ml
|
26.5
gal
|
0.000100313
Ml
|
27
gal
|
0.000102206
Ml
|
27.5
gal
|
0.000104099
Ml
|
28
gal
|
0.000105992
Ml
|
28.5
gal
|
0.000107884
Ml
|
29
gal
|
0.000109777
Ml
|
29.5
gal
|
0.00011167
Ml
|
30
gal
|
0.000113562
Ml
|
30.5
gal
|
0.000115455
Ml
|
31
gal
|
0.000117348
Ml
|
31.5
gal
|
0.00011924
Ml
|
32
gal
|
0.000121133
Ml
|
32.5
gal
|
0.000123026
Ml
|
33
gal
|
0.000124919
Ml
|
33.5
gal
|
0.000126811
Ml
|
34
gal
|
0.000128704
Ml
|
34.5
gal
|
0.000130597
Ml
|
35
gal
|
0.000132489
Ml
|
35.5
gal
|
0.000134382
Ml
|
36
gal
|
0.000136275
Ml
|
36.5
gal
|
0.000138168
Ml
|
37
gal
|
0.00014006
Ml
|
37.5
gal
|
0.000141953
Ml
|
38
gal
|
0.000143846
Ml
|
38.5
gal
|
0.000145738
Ml
|
39
gal
|
0.000147631
Ml
|
39.5
gal
|
0.000149524
Ml
|
40
gal
|
0.000151416
Ml
|
40.5
gal
|
0.000153309
Ml
|
41
gal
|
0.000155202
Ml
|
41.5
gal
|
0.000157095
Ml
|
42
gal
|
0.000158987
Ml
|
42.5
gal
|
0.00016088
Ml
|
43
gal
|
0.000162773
Ml
|
43.5
gal
|
0.000164665
Ml
|
44
gal
|
0.000166558
Ml
|
44.5
gal
|
0.000168451
Ml
|
45
gal
|
0.000170344
Ml
|
45.5
gal
|
0.000172236
Ml
|
46
gal
|
0.000174129
Ml
|
46.5
gal
|
0.000176022
Ml
|
47
gal
|
0.000177914
Ml
|
47.5
gal
|
0.000179807
Ml
|
48
gal
|
0.0001817
Ml
|
48.5
gal
|
0.000183592
Ml
|
49
gal
|
0.000185485
Ml
|
49.5
gal
|
0.000187378
Ml
|
50
gal
|
0.000189271
Ml
|
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