The “ton” has different meanings depending on where you are in the world. In the United States, the short ton weighs 2,000 pounds, whereas in the United Kingdom, the long ton is slightly heavier at 2,240 pounds. Meanwhile, the metric ton (or tonne) used in most countries around the globe weighs exactly 1,000 kilograms or 2,204.62 pounds, which aligns with the International System of Units.
Interestingly, the term “ton” originated from “tun,” a large cask used to measure wine or ale’s capacity in medieval times. This historical connection signifies not just weight but also volume, reflecting the ton’s versatile application throughout history. Whether measuring ship’s cargo or carbon emissions, the ton continues to be a crucial unit in various fields.
The kilogram, the base unit of mass in the International System of Units (SI), has a fascinating history tied to a physical artifact. Until 2019, it was defined by Le Grand K, a platinum-iridium cylinder stored in a vault in France. However, even slight surface contamination or material wear could alter its mass. To ensure a more stable and universally consistent measure, the kilogram is now defined by the Planck constant—a fundamental constant of nature—using a Kibble balance. This revolutionary change marked a significant milestone in metrology and brings mass measurement into line with other SI units that are already defined by fundamental constants, rather than physical objects.
| Tons | Kilograms |
|---|---|
0
t
|
0
kg
|
0.5
t
|
453.59237
kg
|
1
t
|
907.18474
kg
|
1.5
t
|
1360.77711
kg
|
2
t
|
1814.36948
kg
|
2.5
t
|
2267.96185
kg
|
3
t
|
2721.55422
kg
|
3.5
t
|
3175.14659
kg
|
4
t
|
3628.73896
kg
|
4.5
t
|
4082.33133
kg
|
5
t
|
4535.9237
kg
|
5.5
t
|
4989.51607
kg
|
6
t
|
5443.10844
kg
|
6.5
t
|
5896.70081
kg
|
7
t
|
6350.29318
kg
|
7.5
t
|
6803.88555
kg
|
8
t
|
7257.47792
kg
|
8.5
t
|
7711.07029
kg
|
9
t
|
8164.66266
kg
|
9.5
t
|
8618.25503
kg
|
10
t
|
9071.8474
kg
|
10.5
t
|
9525.43977
kg
|
11
t
|
9979.03214
kg
|
11.5
t
|
10432.62451
kg
|
12
t
|
10886.21688
kg
|
12.5
t
|
11339.80925
kg
|
13
t
|
11793.40162
kg
|
13.5
t
|
12246.99399
kg
|
14
t
|
12700.58636
kg
|
14.5
t
|
13154.17873
kg
|
15
t
|
13607.7711
kg
|
15.5
t
|
14061.36347
kg
|
16
t
|
14514.95584
kg
|
16.5
t
|
14968.54821
kg
|
17
t
|
15422.14058
kg
|
17.5
t
|
15875.73295
kg
|
18
t
|
16329.32532
kg
|
18.5
t
|
16782.91769
kg
|
19
t
|
17236.51006
kg
|
19.5
t
|
17690.10243
kg
|
20
t
|
18143.6948
kg
|
20.5
t
|
18597.28717
kg
|
21
t
|
19050.87954
kg
|
21.5
t
|
19504.47191
kg
|
22
t
|
19958.06428
kg
|
22.5
t
|
20411.65665
kg
|
23
t
|
20865.24902
kg
|
23.5
t
|
21318.84139
kg
|
24
t
|
21772.43376
kg
|
24.5
t
|
22226.02613
kg
|
25
t
|
22679.6185
kg
|
25.5
t
|
23133.21087
kg
|
26
t
|
23586.80324
kg
|
26.5
t
|
24040.39561
kg
|
27
t
|
24493.98798
kg
|
27.5
t
|
24947.58035
kg
|
28
t
|
25401.17272
kg
|
28.5
t
|
25854.76509
kg
|
29
t
|
26308.35746
kg
|
29.5
t
|
26761.94983
kg
|
30
t
|
27215.5422
kg
|
30.5
t
|
27669.13457
kg
|
31
t
|
28122.72694
kg
|
31.5
t
|
28576.31931
kg
|
32
t
|
29029.91168
kg
|
32.5
t
|
29483.50405
kg
|
33
t
|
29937.09642
kg
|
33.5
t
|
30390.68879
kg
|
34
t
|
30844.28116
kg
|
34.5
t
|
31297.87353
kg
|
35
t
|
31751.4659
kg
|
35.5
t
|
32205.05827
kg
|
36
t
|
32658.65064
kg
|
36.5
t
|
33112.24301
kg
|
37
t
|
33565.83538
kg
|
37.5
t
|
34019.42775
kg
|
38
t
|
34473.02012
kg
|
38.5
t
|
34926.61249
kg
|
39
t
|
35380.20486
kg
|
39.5
t
|
35833.79723
kg
|
40
t
|
36287.3896
kg
|
40.5
t
|
36740.98197
kg
|
41
t
|
37194.57434
kg
|
41.5
t
|
37648.16671
kg
|
42
t
|
38101.75908
kg
|
42.5
t
|
38555.35145
kg
|
43
t
|
39008.94382
kg
|
43.5
t
|
39462.53619
kg
|
44
t
|
39916.12856
kg
|
44.5
t
|
40369.72093
kg
|
45
t
|
40823.3133
kg
|
45.5
t
|
41276.90567
kg
|
46
t
|
41730.49804
kg
|
46.5
t
|
42184.09041
kg
|
47
t
|
42637.68278
kg
|
47.5
t
|
43091.27515
kg
|
48
t
|
43544.86752
kg
|
48.5
t
|
43998.45989
kg
|
49
t
|
44452.05226
kg
|
49.5
t
|
44905.64463
kg
|
50
t
|
45359.237
kg
|
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