The pound, symbolized as “lb,” has an intriguing history that dates back to ancient Rome. The word “pound” originates from the Latin word “libra,” a unit used in Rome, which explains its abbreviation “lb.” The pound in England was first standardized in the 13th century as the Tower pound, which was later replaced by the more familiar Avoirdupois pound in 1959. This unit is still widely used in the United States and other countries as a measure of weight, equivalent to 16 ounces or approximately 453.592 grams.
The term “pound” is also used in currency, notably the British Pound Sterling, reflecting its historical association with a pound weight of silver. Interestingly, both uses of “pound” highlight its longstanding economic significance, indicating value and weight across different contexts and time periods. Such dual purposes underscore the unit’s adaptability and persistence through history, making it a fascinating study in linguistic and metrological evolution.
A metric tonne, often simply referred to as a “tonne,” is a standard unit of mass equivalent to 1,000 kilograms, or approximately 2,204.62 pounds. Interestingly, the term “tonne” derives from the Old French word “tonne,” meaning a large cask, reflecting its historical use in trade and shipping. Unlike the imperial ton, which is usually used in the United States and equals 2,000 pounds, the metric tonne is part of the International System of Units (SI), making it a globally recognized measure, especially in trade and scientific communities.
The widespread adoption of the metric tonne simplifies international commerce, with industries like shipping and logistics relying heavily on its uniformity. Its use extends beyond everyday contexts; for instance, when scientists discuss carbon emissions or agricultural yields, they often quantify their findings in metric tonnes, emphasizing its crucial role in global environmental and economic assessments.
Pounds | Metric Tonnes |
---|---|
0
lb
|
0
mt
|
1
lb
|
0.000453592
mt
|
2
lb
|
0.000907185
mt
|
3
lb
|
0.00136078
mt
|
4
lb
|
0.00181437
mt
|
5
lb
|
0.00226796
mt
|
6
lb
|
0.00272155
mt
|
7
lb
|
0.00317515
mt
|
8
lb
|
0.00362874
mt
|
9
lb
|
0.00408233
mt
|
10
lb
|
0.00453592
mt
|
11
lb
|
0.00498952
mt
|
12
lb
|
0.00544311
mt
|
13
lb
|
0.0058967
mt
|
14
lb
|
0.00635029
mt
|
15
lb
|
0.00680389
mt
|
16
lb
|
0.00725748
mt
|
17
lb
|
0.00771107
mt
|
18
lb
|
0.00816466
mt
|
19
lb
|
0.00861826
mt
|
20
lb
|
0.00907185
mt
|
21
lb
|
0.00952544
mt
|
22
lb
|
0.00997903
mt
|
23
lb
|
0.0104326
mt
|
24
lb
|
0.0108862
mt
|
25
lb
|
0.0113398
mt
|
26
lb
|
0.0117934
mt
|
27
lb
|
0.012247
mt
|
28
lb
|
0.0127006
mt
|
29
lb
|
0.0131542
mt
|
30
lb
|
0.0136078
mt
|
31
lb
|
0.0140614
mt
|
32
lb
|
0.014515
mt
|
33
lb
|
0.0149685
mt
|
34
lb
|
0.0154221
mt
|
35
lb
|
0.0158757
mt
|
36
lb
|
0.0163293
mt
|
37
lb
|
0.0167829
mt
|
38
lb
|
0.0172365
mt
|
39
lb
|
0.0176901
mt
|
40
lb
|
0.0181437
mt
|
41
lb
|
0.0185973
mt
|
42
lb
|
0.0190509
mt
|
43
lb
|
0.0195045
mt
|
44
lb
|
0.0199581
mt
|
45
lb
|
0.0204117
mt
|
46
lb
|
0.0208652
mt
|
47
lb
|
0.0213188
mt
|
48
lb
|
0.0217724
mt
|
49
lb
|
0.022226
mt
|
50
lb
|
0.0226796
mt
|
51
lb
|
0.0231332
mt
|
52
lb
|
0.0235868
mt
|
53
lb
|
0.0240404
mt
|
54
lb
|
0.024494
mt
|
55
lb
|
0.0249476
mt
|
56
lb
|
0.0254012
mt
|
57
lb
|
0.0258548
mt
|
58
lb
|
0.0263084
mt
|
59
lb
|
0.0267619
mt
|
60
lb
|
0.0272155
mt
|
61
lb
|
0.0276691
mt
|
62
lb
|
0.0281227
mt
|
63
lb
|
0.0285763
mt
|
64
lb
|
0.0290299
mt
|
65
lb
|
0.0294835
mt
|
66
lb
|
0.0299371
mt
|
67
lb
|
0.0303907
mt
|
68
lb
|
0.0308443
mt
|
69
lb
|
0.0312979
mt
|
70
lb
|
0.0317515
mt
|
71
lb
|
0.0322051
mt
|
72
lb
|
0.0326587
mt
|
73
lb
|
0.0331122
mt
|
74
lb
|
0.0335658
mt
|
75
lb
|
0.0340194
mt
|
76
lb
|
0.034473
mt
|
77
lb
|
0.0349266
mt
|
78
lb
|
0.0353802
mt
|
79
lb
|
0.0358338
mt
|
80
lb
|
0.0362874
mt
|
81
lb
|
0.036741
mt
|
82
lb
|
0.0371946
mt
|
83
lb
|
0.0376482
mt
|
84
lb
|
0.0381018
mt
|
85
lb
|
0.0385554
mt
|
86
lb
|
0.0390089
mt
|
87
lb
|
0.0394625
mt
|
88
lb
|
0.0399161
mt
|
89
lb
|
0.0403697
mt
|
90
lb
|
0.0408233
mt
|
91
lb
|
0.0412769
mt
|
92
lb
|
0.0417305
mt
|
93
lb
|
0.0421841
mt
|
94
lb
|
0.0426377
mt
|
95
lb
|
0.0430913
mt
|
96
lb
|
0.0435449
mt
|
97
lb
|
0.0439985
mt
|
98
lb
|
0.0444521
mt
|
99
lb
|
0.0449056
mt
|
100
lb
|
0.0453592
mt
|
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