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.
The ounce is a fascinating unit with a rich history, dating back to Ancient Rome. The term “ounce” is derived from the Latin word “uncia,” meaning “one-twelfth.” Originally used by the Romans as a unit of weight, an uncia represented one-twelfth of a Roman pound. The versatility of the ounce becomes even more intriguing when you consider its application in both weight and volume measurements today.
In the realm of precious metals, such as gold and silver, the term “troy ounce” is used, which is approximately 10% heavier than the customary ounce. Meanwhile, in British imperial and American systems, an ounce can denote both dry and liquid measurements. The fluid ounce, however, differs slightly between the UK and the US, with the UK fluid ounce being approximately 28.4 milliliters and the US at about 29.6 milliliters. This multifaceted unit highlights how historical roots continue to influence modern measurement systems worldwide.
Kilograms | Ounces |
---|---|
0
kg
|
0
oz
|
1
kg
|
35.27396
oz
|
2
kg
|
70.54792
oz
|
3
kg
|
105.82189
oz
|
4
kg
|
141.09585
oz
|
5
kg
|
176.36981
oz
|
6
kg
|
211.64377
oz
|
7
kg
|
246.91773
oz
|
8
kg
|
282.1917
oz
|
9
kg
|
317.46566
oz
|
10
kg
|
352.73962
oz
|
11
kg
|
388.01358
oz
|
12
kg
|
423.28754
oz
|
13
kg
|
458.56151
oz
|
14
kg
|
493.83547
oz
|
15
kg
|
529.10943
oz
|
16
kg
|
564.38339
oz
|
17
kg
|
599.65735
oz
|
18
kg
|
634.93132
oz
|
19
kg
|
670.20528
oz
|
20
kg
|
705.47924
oz
|
21
kg
|
740.7532
oz
|
22
kg
|
776.02716
oz
|
23
kg
|
811.30112
oz
|
24
kg
|
846.57509
oz
|
25
kg
|
881.84905
oz
|
26
kg
|
917.12301
oz
|
27
kg
|
952.39697
oz
|
28
kg
|
987.67093
oz
|
29
kg
|
1022.9449
oz
|
30
kg
|
1058.21886
oz
|
31
kg
|
1093.49282
oz
|
32
kg
|
1128.76678
oz
|
33
kg
|
1164.04074
oz
|
34
kg
|
1199.31471
oz
|
35
kg
|
1234.58867
oz
|
36
kg
|
1269.86263
oz
|
37
kg
|
1305.13659
oz
|
38
kg
|
1340.41055
oz
|
39
kg
|
1375.68452
oz
|
40
kg
|
1410.95848
oz
|
41
kg
|
1446.23244
oz
|
42
kg
|
1481.5064
oz
|
43
kg
|
1516.78036
oz
|
44
kg
|
1552.05433
oz
|
45
kg
|
1587.32829
oz
|
46
kg
|
1622.60225
oz
|
47
kg
|
1657.87621
oz
|
48
kg
|
1693.15017
oz
|
49
kg
|
1728.42414
oz
|
50
kg
|
1763.6981
oz
|
51
kg
|
1798.97206
oz
|
52
kg
|
1834.24602
oz
|
53
kg
|
1869.51998
oz
|
54
kg
|
1904.79395
oz
|
55
kg
|
1940.06791
oz
|
56
kg
|
1975.34187
oz
|
57
kg
|
2010.61583
oz
|
58
kg
|
2045.88979
oz
|
59
kg
|
2081.16376
oz
|
60
kg
|
2116.43772
oz
|
61
kg
|
2151.71168
oz
|
62
kg
|
2186.98564
oz
|
63
kg
|
2222.2596
oz
|
64
kg
|
2257.53356
oz
|
65
kg
|
2292.80753
oz
|
66
kg
|
2328.08149
oz
|
67
kg
|
2363.35545
oz
|
68
kg
|
2398.62941
oz
|
69
kg
|
2433.90337
oz
|
70
kg
|
2469.17734
oz
|
71
kg
|
2504.4513
oz
|
72
kg
|
2539.72526
oz
|
73
kg
|
2575
oz
|
74
kg
|
2610.27318
oz
|
75
kg
|
2645.54715
oz
|
76
kg
|
2680.82111
oz
|
77
kg
|
2716.09507
oz
|
78
kg
|
2751.36903
oz
|
79
kg
|
2786.64299
oz
|
80
kg
|
2821.91696
oz
|
81
kg
|
2857.19092
oz
|
82
kg
|
2892.46488
oz
|
83
kg
|
2927.73884
oz
|
84
kg
|
2963.0128
oz
|
85
kg
|
2998.28677
oz
|
86
kg
|
3033.56073
oz
|
87
kg
|
3068.83469
oz
|
88
kg
|
3104.10865
oz
|
89
kg
|
3139.38261
oz
|
90
kg
|
3174.65658
oz
|
91
kg
|
3209.93054
oz
|
92
kg
|
3245.2045
oz
|
93
kg
|
3280.47846
oz
|
94
kg
|
3315.75242
oz
|
95
kg
|
3351.02639
oz
|
96
kg
|
3386.30035
oz
|
97
kg
|
3421.57431
oz
|
98
kg
|
3456.84827
oz
|
99
kg
|
3492.12223
oz
|
100
kg
|
3527.39619
oz
|
If you like the website, share it on social media.