Ounces to Kilograms Converter
oz → kg · ⚖️ Weight & Mass
1 Ounces = 0.02834952 Kilograms
How to convert Ounces to Kilograms
To convert Ounces to Kilograms, multiply the value in Ounces by 0.02834952. For example, 5 oz = 0.1417476 kg.
If you need to convert from Ounces to Kilograms, the key figure to remember is that one Ounces equals 0.02834952 Kilograms. This page gives you a live calculator, a full reference table, and the underlying formula so you can convert oz to kg with complete confidence.
Weight and mass conversions matter for cooking, shipping, fitness, science, and international trade. Although 'weight' and 'mass' are technically different concepts in physics, in everyday use the terms are interchangeable and the conversions are identical.
Understanding Ounces and Kilograms
The kilogram is the SI base unit of mass and the reference point for the entire metric system. Pounds and ounces dominate in the United States, while stones remain common for body weight in the UK and Ireland. Metric tons (1,000 kg) and US tons (2,000 lb) appear in freight, agriculture, and industry — and because they differ by about 10%, confusing them is a frequent and costly mistake.
How accurate is this conversion?
The pound is defined as exactly 0.45359237 kilograms, a definition adopted internationally in 1959. This means kilogram-to-pound conversions are exact, not approximate, so you can rely on the figures in the table below for any purpose, from postage to laboratory work.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Ounces to Kilograms values
The most frequently searched conversions are 1 Ounces = 0.02834952 Kilograms, 5 Ounces = 0.1417476 Kilograms, 10 Ounces = 0.2834952 Kilograms, and 100 Ounces = 2.834952 Kilograms. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: For shipping and postage, always check whether a quoted weight is in metric or US tons — the difference of roughly 93 kilograms per ton can change shipping classes and costs significantly.
Ounces to Kilograms — Conversion Table
| Ounces (oz) | Kilograms (kg) |
|---|---|
| 0.1 oz | 0.002834952 kg |
| 0.25 oz | 0.00708738 kg |
| 0.5 oz | 0.01417476 kg |
| 1 oz | 0.02834952 kg |
| 2 oz | 0.05669904 kg |
| 5 oz | 0.1417476 kg |
| 10 oz | 0.2834952 kg |
| 25 oz | 0.708738 kg |
| 50 oz | 1.417476 kg |
| 100 oz | 2.834952 kg |
| 250 oz | 7.08738 kg |
| 500 oz | 14.17476 kg |
| 1000 oz | 28.34952 kg |