ounces (oz)

ounces as a conversion hub: 6 direct pairs, all with the exact factor on the page.

Definition1 oz = 0.02834952 kg exactly

CategoryWeight and Mass Converter

Pairs from here6

Weight and Mass Converter

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ounces converted to every other unit

oz	kg	g	mg	t	lb	st
1 oz	0.02834952	28.349523	28,349.52	0.0000283495	0.0625	0.0044642857
2 oz	0.05669905	56.699046	56,699.05	0.000056699	0.125	0.0089285714
5 oz	0.14174762	141.748	141,747.62	0.0001417476	0.3125	0.02232143
10 oz	0.28349523	283.495	283,495.23	0.0002834952	0.625	0.04464286
20 oz	0.56699046	566.99	566,990.46	0.0005669905	1.25	0.08928571
50 oz	1.417476	1,417.48	1,417,476.16	0.0014174762	3.125	0.22321429
100 oz	2.834952	2,834.95	2,834,952.31	0.0028349523	6.25	0.44642857

All conversions starting from oz

oz to kg oz to g oz to mg oz to t oz to lb oz to st

Questions

How do I convert from ounces?

Pick the target unit from the table on this page, or open the dedicated pair page — each one carries a converter, a table of common values and the exact factor.

Is ounce exact or approximate?

The factor shown (1 oz = 0.02834952 kg) is fixed by definition, so conversions are exact rather than measured.

What is ounce used for?

US food portions and postal weights