Ounces to Kilograms Converter

One Ounce equals 0.02834952313 Kilograms (1 oz = 0.02834952313 kg). Multiply an Ounce value by 0.02834952313 to get the equivalent in Kilograms. Use the calculator above for your value, or check the examples and reference table below.

Formula

kg = oz × 0.02834952313

Multiply the Ounce value by 0.02834952313 to get the equivalent value in Kilograms.

Example Conversions

1 Ounce (oz)

0.02834952313 Kilogram (kg)

5 Ounce (oz)

0.1417476156 Kilogram (kg)

10 Ounce (oz)

0.2834952312 Kilogram (kg)

25 Ounce (oz)

0.7087380781 Kilogram (kg)

100 Ounce (oz)

2.834952313 Kilogram (kg)

Conversion Table

Common conversion values from Ounce to Kilogram
Ounce (oz)Kilogram (kg)
0.10.002834952312
0.50.01417476156
10.02834952313
20.05669904625
50.1417476156
100.2834952312
250.7087380781
501.417476156
1002.834952313
2507.087380781
50014.17476156
100028.34952313

How to Convert Manually

Use these steps to convert Ounce values to Kilogram without the calculator.

  1. Write down the value in Ounce (oz) that you want to convert.
  2. Multiply that value by 0.02834952313.
  3. For example, 10 Ounces × 0.02834952313 = 0.2834952312 Kilograms.
  4. Label the result as Kilogram (kg).

Relative Size Comparison

1 Ounce
1 Kilogram35.27396195 Ounces
1 kg

This chart shows the visual difference in size between exactly one Ounce and one Kilogram.

About Ounce and Kilogram

The ounce is one sixteenth of a pound, exactly 28.349523125 grams. US recipes, portion sizes, and postal rates use it for quantities a pound would state too coarsely. The kilogram is the SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by the old platinum-iridium prototype. It is the reference for every other mass unit on this site. One Ounce equals 0.02834952313 Kilograms (1 oz = 0.02834952313 kg). Ounce is used in US recipe ingredients and in food portion sizes. Kilogram is used in body weight outside the US.

Precision and Rounding:Metric-imperial mass factors are exact (1 lb = 0.45359237 kg by the 1959 agreement), so precision is purely a display choice. One decimal place is enough for body weight and cooking; nutrition labeling, pharmacy, and lab work need the full factor before rounding.

Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).

Worked Example

15Ounces equals0.4252428469Kilograms.

15 oz × 0.02834952313 = 0.4252428469 kg

FAQ

How do I convert Ounce to Kilogram?

Multiply the Ounce value by 0.02834952313 to get the equivalent value in Kilograms.

What is the formula for Ounce to Kilogram?

The formula is kg = oz × 0.02834952313.

How many Kilograms are in 1 Ounce?

1 Ounce equals 0.02834952313 Kilograms.

Can I convert Kilogram back to Ounce?

Yes. 1 Kilogram equals 35.27396195 Ounces, and the related converter can reverse the calculation.

What are common names for Ounce and Kilogram?

Ounce is shown as oz and may also be searched as ounces. Kilogram is shown as kg and may also be searched as kilograms, kilo, kilos.

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