The litre (or liter) is a fascinating metric unit of volume predominantly used for measuring liquids. Curiously, while it is synonymous with the metric litre, it is not an official unit in the International System of Units (SI); instead, it is accepted for use with the SI due to its practicality. Originally defined as the volume of one kilogram of water at maximum density, the litre provides a tangible connection between volume and weight, emphasizing the interrelationship of these physical properties.
Despite its widespread application in everyday life, such as in beverages and fuels, the litre’s versatility extends beyond terrestrial boundaries. It plays a crucial role in astrobiology, where scientists explore celestial bodies for signs of water, often in volumes measured by litres or their scientific counterpart, cubic decimetres. Whether quenching thirst or exploring the cosmos, the litre connects us to the natural world in multifaceted ways.
A cubic kilometer might sound abstract, but it’s a colossal unit of volume measurement that fires the imagination. Imagine a giant cube stretching a kilometer – that’s 1,000 meters – long on each side, containing one billion cubic meters! To visualize, picture over 400,000 Olympic-size swimming pools packed into that space. Cubic kilometers are often used to gauge the volume of large water bodies, like net water storage in massive reservoirs or the extent of vast glaciers.
Additionally, the mighty oceans of Earth collectively hold around 1.332 billion cubic kilometers of water. Despite their size covering 71% of Earth’s surface, converting ocean volumes into cubic kilometers provides a more graspable scale of our planet’s vast aquatic expanse, helping scientists track changes over time.
| Litres | Cubic kilometers |
|---|---|
0
l
|
0
km³
|
1
l
|
1e-12
km³
|
2
l
|
2e-12
km³
|
3
l
|
3e-12
km³
|
4
l
|
4e-12
km³
|
5
l
|
5e-12
km³
|
6
l
|
6e-12
km³
|
7
l
|
7e-12
km³
|
8
l
|
8e-12
km³
|
9
l
|
9e-12
km³
|
10
l
|
1e-11
km³
|
11
l
|
1.1e-11
km³
|
12
l
|
1.2e-11
km³
|
13
l
|
1.3e-11
km³
|
14
l
|
1.4e-11
km³
|
15
l
|
1.5e-11
km³
|
16
l
|
1.6e-11
km³
|
17
l
|
1.7e-11
km³
|
18
l
|
1.8e-11
km³
|
19
l
|
1.9e-11
km³
|
20
l
|
2e-11
km³
|
21
l
|
2.1e-11
km³
|
22
l
|
2.2e-11
km³
|
23
l
|
2.3e-11
km³
|
24
l
|
2.4e-11
km³
|
25
l
|
2.5e-11
km³
|
26
l
|
2.6e-11
km³
|
27
l
|
2.7e-11
km³
|
28
l
|
2.8e-11
km³
|
29
l
|
2.9e-11
km³
|
30
l
|
3e-11
km³
|
31
l
|
3.1e-11
km³
|
32
l
|
3.2e-11
km³
|
33
l
|
3.3e-11
km³
|
34
l
|
3.4e-11
km³
|
35
l
|
3.5e-11
km³
|
36
l
|
3.6e-11
km³
|
37
l
|
3.7e-11
km³
|
38
l
|
3.8e-11
km³
|
39
l
|
3.9e-11
km³
|
40
l
|
4e-11
km³
|
41
l
|
4.1e-11
km³
|
42
l
|
4.2e-11
km³
|
43
l
|
4.3e-11
km³
|
44
l
|
4.4e-11
km³
|
45
l
|
4.5e-11
km³
|
46
l
|
4.6e-11
km³
|
47
l
|
4.7e-11
km³
|
48
l
|
4.8e-11
km³
|
49
l
|
4.9e-11
km³
|
50
l
|
5e-11
km³
|
51
l
|
5.1e-11
km³
|
52
l
|
5.2e-11
km³
|
53
l
|
5.3e-11
km³
|
54
l
|
5.4e-11
km³
|
55
l
|
5.5e-11
km³
|
56
l
|
5.6e-11
km³
|
57
l
|
5.7e-11
km³
|
58
l
|
5.8e-11
km³
|
59
l
|
5.9e-11
km³
|
60
l
|
6e-11
km³
|
61
l
|
6.1e-11
km³
|
62
l
|
6.2e-11
km³
|
63
l
|
6.3e-11
km³
|
64
l
|
6.4e-11
km³
|
65
l
|
6.5e-11
km³
|
66
l
|
6.6e-11
km³
|
67
l
|
6.7e-11
km³
|
68
l
|
6.8e-11
km³
|
69
l
|
6.9e-11
km³
|
70
l
|
7e-11
km³
|
71
l
|
7.1e-11
km³
|
72
l
|
7.2e-11
km³
|
73
l
|
7.3e-11
km³
|
74
l
|
7.4e-11
km³
|
75
l
|
7.5e-11
km³
|
76
l
|
7.6e-11
km³
|
77
l
|
7.7e-11
km³
|
78
l
|
7.8e-11
km³
|
79
l
|
7.9e-11
km³
|
80
l
|
8e-11
km³
|
81
l
|
8.1e-11
km³
|
82
l
|
8.2e-11
km³
|
83
l
|
8.3e-11
km³
|
84
l
|
8.4e-11
km³
|
85
l
|
8.5e-11
km³
|
86
l
|
8.6e-11
km³
|
87
l
|
8.7e-11
km³
|
88
l
|
8.8e-11
km³
|
89
l
|
8.9e-11
km³
|
90
l
|
9e-11
km³
|
91
l
|
9.1e-11
km³
|
92
l
|
9.2e-11
km³
|
93
l
|
9.3e-11
km³
|
94
l
|
9.4e-11
km³
|
95
l
|
9.5e-11
km³
|
96
l
|
9.6e-11
km³
|
97
l
|
9.7e-11
km³
|
98
l
|
9.8e-11
km³
|
99
l
|
9.9e-11
km³
|
100
l
|
1e-10
km³
|
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