An avoirdupois ounce is 1/16 pound.
Ounces to Kilograms
Convert ounces (oz) to kilograms (kg) instantly. Free online weight converter with formulas, tables and examples.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Kilogram is 1000 gram units.
kg = oz × 0.028349523125
Results update instantly for Ounces to Kilograms conversions.
Reserved above the conversion cards and below the converter.
Formula
kg = oz × 0.028349523125
oz = kg ÷ 0.028349523125
Conversion table
| 1 oz | 0.028350 kg |
| 5 oz | 0.141748 kg |
| 10 oz | 0.283495 kg |
| 20 oz | 0.566990 kg |
| 50 oz | 1.417476 kg |
| 100 oz | 2.834952 kg |
| 500 oz | 14.174762 kg |
| 1000 oz | 28.349523 kg |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the ounce (oz). An avoirdupois ounce is 1/16 pound.
What is the destination unit in this conversion?
The destination unit is the kilogram (kg). Kilogram is 1000 gram units.
How do I convert ounces to kilograms?
Multiply the number of ounces by 0.028349523125 to get the equivalent value in kilograms. For example, 5 oz × 0.028349523125 = 0.141748 kg.
Is the ounce to kilogram conversion exact?
Yes. This converter uses a fixed factor of 0.028349523125, so results are precise and consistent every time you use it.
Where is this conversion commonly used?
It's used in everyday measurement, shipping and logistics, scientific and industrial work, and any context where you need to switch between ounce and kilogram values.
Can I convert kilograms back to ounces?
Yes. Multiply the kilograms value by 35.2739619496, or divide it by 0.028349523125, to convert back to ounces.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts ounces (oz) into kilograms (kg) using the Universal Converter's mass conversion engine.
Ounce-to-Kilogram conversions are useful for everyday calculations, scientific work, shipping, and any task that mixes different weight or mass units.
The formula is kg = oz × 0.028349523125, based on the standard definitions of ounce and kilogram.
Because the conversion factor is fixed, results stay consistent and repeatable no matter how many times you calculate them.
Ounce: An avoirdupois ounce is 1/16 pound. Kilogram: Kilogram is 1000 gram units.