Oz to Kg

Ounces to Kilograms Conversion Formula

To convert ounces to kilograms, use this simple formula:

One avoirdupois ounce is defined as exactly 0.028349523125 kilograms (a sixteenth of a pound). This is the weight ounce, not the fluid ounce used for volume.

Step-by-Step Weight Conversion Guide

1. Take your weight in ounces
2. Multiply it by 0.028349523125 (the number of kilograms in one ounce)
3. Get your result in kilograms

Common Ounces to Kilograms Conversions

Practical Applications of Oz to Kg Converter

• Shipping: US parcels are weighed in ounces while carriers bill international freight in kilograms
• Cooking: Converting ounce-based recipes to kilogram bulk quantities
• Baby weight: Newborn weights given in pounds and ounces converted to kilograms
• Postage: Ounce-based letter and package rates mapped to metric limits
• Sports: Equipment and glove weights listed in ounces, specs in kilograms

About the Ounce and Kilogram

The ounce (avoirdupois) is one-sixteenth of a pound and is widely used in the United States for food, mail and small goods. The kilogram is the SI base unit of mass. Because 16 oz make a pound and a pound is 0.45359237 kg, one ounce works out to exactly 0.028349523125 kg.

Quick Conversion Tips

For a rough estimate, one ounce is about 28 grams, so a pound (16 oz) is close to 0.45 kg. For precise results, multiply the ounces by 0.028349523125 to get kilograms.