Ounce to Kilogram Converter
Conversion Formula
Factor
Formula
About Ounce
The ounce is a unit of mass used in British imperial and United States customary systems. The most commonly used ounce is the international avoirdupois ounce.
Facts About Ounces
- 1 ounce = 1/16 of a pound
- 1 ounce ≈ 28.3495 grams
- 16 ounces = 1 pound
- The international avoirdupois ounce is defined as exactly 28.349523125 grams
Common Uses
- Food packaging and recipes in the United States
- Postal items and small package weights
- Precious metals (troy ounce)
- Fabric weight measurements (denim, etc.)
- Cooking ingredient measurements
History
The ounce derives from the Ancient Roman "uncia," meaning a twelfth, which was a unit in the Ancient Roman units of measurement. The term was borrowed into Middle English through Anglo-Norman and Middle French. The abbreviation "oz" came from the Italian cognate "onza." The international avoirdupois ounce was standardized in 1959 under the international yard and pound agreement.
About Kilogram
The kilogram is the base unit of mass in the International System of Units (SI). It is defined by taking the fixed numerical value of the Planck constant to be 6.62607015×10⁻³⁴ when expressed in the unit J⋅s.
Facts About Kilograms
- 1 kilogram = 1,000 grams
- 1 kilogram ≈ 2.20462 pounds
- 1 kilogram ≈ 35.274 ounces
- The kilogram is the only SI base unit with an SI prefix (kilo-)
Common Uses
- Body weight measurement
- Grocery and food packaging
- Shipping and postage weights
- Scientific mass measurements
- Industrial and manufacturing specifications
History
The kilogram was originally defined in 1795 as the mass of one liter of water. The current definition, based on the Planck constant, was adopted in 2019 to provide a more stable and universal standard independent of physical artifacts.
Conversion Table
Ounce(oz) | Kilogram(kg) |
|---|---|
1 | 0.0283495 |
2 | 0.056699 |
3 | 0.0850486 |
4 | 0.113398 |
5 | 0.141748 |
6 | 0.170097 |
7 | 0.198447 |
8 | 0.226796 |
9 | 0.255146 |
10 | 0.283495 |
Conversion Examples
Convert 1 Ounce to Kilogram
- Conversion Factor: 1 oz = 0.0283495 kg
- Conversion Formula: kg = oz ÷ 35.274
- Calculation: 1 oz ÷ 35.274 = 0.0283495 kg
Convert 10 Ounce to Kilogram
- Conversion Factor: 1 oz = 0.0283495 kg
- Conversion Formula: kg = oz ÷ 35.274
- Calculation: 10 oz ÷ 35.274 = 0.283495 kg
Convert 100 Ounce to Kilogram
- Conversion Factor: 1 oz = 0.0283495 kg
- Conversion Formula: kg = oz ÷ 35.274
- Calculation: 100 oz ÷ 35.274 = 2.83495 kg
Convert 1,000 Ounce to Kilogram
- Conversion Factor: 1 oz = 0.0283495 kg
- Conversion Formula: kg = oz ÷ 35.274
- Calculation: 1,000 oz ÷ 35.274 = 28.3495 kg