Convert OZ To KG

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In order to do a reverse conversion from kilograms to ounces clear values in the above fields and input the value in the “Kilograms” field or go to kilograms to ounces converter page.

Facts about Ounce

Basic facts: An ounce is a unit of mass in the US customary and imperial systems of measurement. Its symbol is [oz]. The avoirdupois ounce, which is the common ounce, is defined as precisely 28.349523125 grams and is equal to one-sixteenth of an avoirdupois pound.

History: The term ounce originates from the Roman uncia, which means a [twelfth part] and the use of a standardized copper bar which defined the Roman pound as well as the foot. The copper bar was divided into twelve identical parts, called unciae. This relationship between the Roman pound and foot ultimately contributed to the uncia being the basis of both the modern inch and the common ounce. Throughout history, the ounce has been used as a standard of mass for various applications and with different definitions. Examples include the French ounce (30.59g), Spanish ounce (28.75g), and the Dutch metric ounce (100g) among others. In 1959, the current definition of the ounce, the international avoirdupois ounce was adopted.

Use: In the US customary system of measurement, an ounce is still a standard unit of mass. It is mainly used in the United States for food portions, measuring packaged food products, and postal items, among other things. In some other countries around the world that have roots in British history and culture, the ounce is still used. The United Kingdom no longer officially uses the ounce due to metrication. It is, however, still used in some settings (restaurants) in the United Kingdom.

Fact about Kilogram

Baci fact: A kilogram [symbol: kg] is the base unit of mass in the SI (International System of Units). It is also known as “kilogramme.” Based on fixed fundamental constants of nature, the kilogram nowadays is defined in terms of the second and the meter. The actual size of the unit remained the same, even though the definition of the kilogram was changed in 2019. Mentioned changes were intended to enhance the definitions of SI base units.

History: The name of this mass unit was derived from the French [kilogramme], which in turn came from adding Greek terminology meaning [a thousand] before the Late Latin term [gramma] that meant “a small weight.”

With an SI prefix, the kilogram is the only SI base unit. SI is a system based on the system of units: meter-kilogram-second rather than a centimeter-gram-second system. This is at least partly due to the lack of coherence and inconsistencies that can occur through the use of centimeter-gram-second systems, like those between the systems of electromagnetic and electrostatic units.

In 1794, the kilogram was initially defined as the mass of one liter of water at its freezing point, though, ultimately defined, since measuring the mass of a volume of water was cumbersome and imprecise.

In 2019, based on Planck’s constant and changes to the definition of the second, a new definition of the kilogram was introduced. Prior to that definition, the kilogram was defined as being equivalent to the mass of a physical prototype, a cylinder made of a platinum-iridium alloy, which was an inadequate measure. The mass of the initial prototype for the kilogram now weighs 50 micrograms less than other copies of the standard kilogram.

Use: The kilogram is used globally in almost all fields and applications, with the exception of countries like the United States, where the kilogram is used in many areas, at least to some degree [such as science, government, industry, and the military] but normally not in everyday applications.

How many kilograms in a oz? 

1 oz is equivalent to 0.0283495231 kilograms. Use 0.0283495231 as the factor to convert ounces to kilograms. Below find some popular ounces to kilograms conversion questions:

• How many kilograms in 2 ounces?  2 ounces x 0.0283495231 = 0.0566990462 number kilograms
• How many kilograms in 3 ounces?  3 ounces x 0.0283495231 = 0.0850485693 number kilograms
• How many kilograms in 5 ounces?  5 ounces x 0.0283495231 = 0.1417476155 number kilograms
• How many kilograms in 10 ounces? 10 ounces x 0.0283495231 = 0.283495231 number kilograms
• How many kilograms in 20 ounces? 20 ounces x 0.0283495231 = 0.566990462 number kilograms
• How many kilograms in 50 ounces? 50 ounces x 0.0283495231 = 1.417476155 number kilograms
• How many kilograms in 100 ounces? 100 ounces x 0.0283495231 = 2.83495231 number kilograms
• How many kilograms in1000 ounces? 1000 ounces x 0.0283495231 = 28.3495231 number kilograms

Ounces to Kilograms Conversion Chart

Ounces	Kilograms	Ounces	Kilograms	Ounces	Kilograms	Ounces	Kilograms
1	0.0283495231	26	0.7370876006	51	1.445825678	76	2.154563756
2	0.0566990462	27	0.7654371237	52	1.474175201	77	2.182913279
3	0.0850485693	28	0.7937866468	53	1.502524724	78	2.211262802
4	0.1133980924	29	0.8221361699	54	1.530874247	79	2.239612325
5	0.1417476155	30	0.850485693	55	1.559223771	80	2.267961848
6	0.1700971386	31	0.8788352161	56	1.587573294	81	2.296311371
7	0.1984466617	32	0.9071847392	57	1.615922817	82	2.324660894
8	0.2267961848	33	0.9355342623	58	1.64427234	83	2.353010417
9	0.2551457079	34	0.9638837854	59	1.672621863	84	2.38135994
10	0.283495231	35	0.9922333085	60	1.700971386	85	2.409709464
11	0.3118447541	36	1.020582832	61	1.729320909	86	2.438058987
12	0.3401942772	37	1.048932355	62	1.757670432	87	2.46640851
13	0.3685438003	38	1.077281878	63	1.786019955	88	2.494758033
14	0.3968933234	39	1.105631401	64	1.814369478	89	2.523107556
15	0.4252428465	40	1.133980924	65	1.842719002	90	2.551457079
16	0.4535923696	41	1.162330447	66	1.871068525	91	2.579806602
17	0.4819418927	42	1.19067997	67	1.899418048	92	2.608156125
18	0.5102914158	43	1.219029493	68	1.927767571	93	2.636505648
19	0.5386409389	44	1.247379016	69	1.956117094	94	2.664855171
20	0.566990462	45	1.27572854	70	1.984466617	95	2.693204695
21	0.5953399851	46	1.304078063	71	2.01281614	96	2.721554218
22	0.6236895082	47	1.332427586	72	2.041165663	97	2.749903741
23	0.6520390313	48	1.360777109	73	2.069515186	98	2.778253264
24	0.6803885544	49	1.389126632	74	2.097864709	99	2.806602787
25	0.7087380775	50	1.417476155	75	2.126214233	100	2.83495231

Convert ounces to other volume units

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• Convert Ounces to Pounds