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Ounce to Kilogram Converter

Type a value — the answer appears instantly. 1 oz = 0.0283495 kg.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

0.0283495 kilograms

= 0.0625 lb= 28.3495 g

equals 0.0283495 kilograms

Formula: kg = oz × 0.028349523

Ounce to Kilogram formula

kg = oz × 0.028349523

Convert 5 ounces to kilograms

  1. Start with 5 ounces.
  2. Multiply by the conversion factor: 5 × 0.0283495 = 0.141748.
  3. So 5 oz = 0.141748 kg.

Ounce to Kilogram conversion table

Ounce to Kilogram conversion table
Ounces (oz)Kilograms (kg)
0.01 oz0.000283495 kg
0.1 oz0.00283495 kg
0.25 oz0.00708738 kg
0.5 oz0.0141748 kg
1 oz0.0283495 kg
2 oz0.056699 kg
3 oz0.0850486 kg
4 oz0.113398 kg
5 oz0.141748 kg
6 oz0.170097 kg
7 oz0.198447 kg
8 oz0.226796 kg
9 oz0.255146 kg
10 oz0.283495 kg
15 oz0.425243 kg
20 oz0.56699 kg
25 oz0.708738 kg
30 oz0.850486 kg
40 oz1.13398 kg
50 oz1.41748 kg
75 oz2.12621 kg
100 oz2.83495 kg
250 oz7.08738 kg
500 oz14.1748 kg
1,000 oz28.3495 kg
5,000 oz141.748 kg
10,000 oz283.495 kg

Unit definitions

What is a ounce?

The avoirdupois ounce is one sixteenth of a pound, about 28.35 grams. It is common in the United States for food portions, packaged goods, and postal weights. It should not be confused with the troy ounce used for precious metals.

What is a kilogram?

The kilogram is the SI base unit of mass, redefined in 2019 in terms of the Planck constant. It is the global standard for body weight, groceries, and freight in most countries. One kilogram is about 2.205 pounds.

Frequently asked questions

How many kilograms are in one ounce?

One ounce equals 0.0283495 kilograms (1 oz = 0.0283495 kg).

How do I convert ounces to kilograms?

Multiply the value in ounces by 0.0283495. For example, 10 oz × 0.0283495 = 0.283495 kg.

Which is bigger — a ounce or a kilogram?

A kilogram is bigger: one kilogram contains 35.274 ounces.

Is this ounce to kilogram converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.