Kilograms to ounces
Multiply kilograms by 35.274 to get ounces.
2 kg = 70.5479 oz
How to convert kilograms to ounces
The ounce is one sixteenth of an avoirdupois pound, exactly 28.349523125 grams. The kilogram is the SI base unit of mass, fixed since 2019 by defining the Planck constant as exactly 6.62607015×10⁻³⁴ J·s.
Worked example — 2 kg: 2 × 35.274 = 70.5479 oz.
Kilograms to ounces table
| Kilograms | Ounces |
|---|---|
| 0.1 kg | 3.5274 oz |
| 0.25 kg | 8.8185 oz |
| 0.5 kg | 17.637 oz |
| 1 kg | 35.274 oz |
| 2 kg | 70.5479 oz |
| 3 kg | 105.8219 oz |
| 5 kg | 176.3698 oz |
| 10 kg | 352.7396 oz |
| 20 kg | 705.4792 oz |
Reverse and related
About kilograms and ounces
Kilogram (kg)
1 kg = 35.274 ozDefinition. The SI base unit of mass, fixed since 2019 by defining the Planck constant as exactly 6.62607015×10⁻³⁴ J·s
History and origin
The kilogram began in 1795 as the mass of one litre of water at the melting point of ice, and from 1889 was embodied in a platinum-iridium cylinder kept near Paris, the International Prototype Kilogram. In 2019 the SI retired that physical artefact and redefined the unit through a fixed value of the Planck constant, leaving its size unchanged.
Current use
It is the base unit of mass almost everywhere on Earth. The main everyday exception is the United States, where people weigh in pounds even though US science, medicine and industry work in kilograms.
Source: BIPM, The International System of Units (SI), 9th ed. (2019)
Ounce (oz)
1 oz = 0.0283495 kgDefinition. One sixteenth of an avoirdupois pound, exactly 28.349523125 grams
History and origin
The ounce comes from the Roman uncia, a twelfth of the libra; the modern avoirdupois ounce is instead one sixteenth of the pound. Through the 1959 agreement it works out to exactly 28.349523125 grams.
Current use
Ounces are used in the United States for food portions, packaged goods and letter mail, and worldwide for boxing weights and some recipes.
Source: NIST Handbook 44, Appendix C §5 (Tables of Equivalents)
Where people use this
Kilograms: body weight outside the US, groceries and produce, checked-luggage limits. Ounces: recipe portions, letter mail, packaged food. 1 kg is about 35.3 oz.
Every value is carried to full double precision; the display is rounded.
Sources: NIST Handbook 44, Appendix C §5 (Tables of Equivalents); BIPM, The International System of Units (SI), 9th ed. (2019).
Questions people ask
How many ounces is 1 kg?
One kilogram is about 35.3 ounces. To convert kg to ounces, multiply by 35.274.
How many ounces is 2 kg?
2 kg is about 70.5 ounces.
What is 500 g in ounces?
Half a kilogram is about 17.6 ounces.