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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.

Did you know?

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 to Ounces Conversion Table

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