kg to Ounces Converter
This calculator converts weight between kilograms and ounces, giving you the exact figure whether you are following a recipe from a US or UK cookbook, checking luggage limits, or converting body weight between metric and imperial units. Enter a weight in kilograms and the tool instantly returns the equivalent in ounces, using the internationally defined avoirdupois ounce of 28.349523125 grams rather than the troy ounce used for precious metals. You can also work the other way: enter a weight in ounces and the kilogram field updates automatically, since the two inputs are linked. A dropdown lets you round the result to a whole ounce, one, two, three, or six decimal places. Alongside the main result, the calculator shows the same weight in grams, and a full breakdown box lists the figure in kilograms, grams, ounces, pounds, pounds and ounces combined, and troy ounces, so you get every common unit at once without separate lookups. A worked example walks through the maths behind a 1 kg conversion step by step, and a reference table below lists common kilogram values from 0.025 kg up to 50 kg alongside their ounce, pound, and gram equivalents. Because the conversion factor is fixed by international definition, results are exact rather than approximate, so you can rely on the figures for cooking, shipping, postal, or everyday measurement purposes.
Kilograms to Ounces
Reverse: Ounces to kg
Edit either field and the other updates automatically. The two inputs are independent.
Full Breakdown
Worked Example
Common kg to oz Conversions
| Kilograms (kg) | Ounces (oz) | Pounds (lb) | Grams (g) |
|---|
How to Convert Kilograms to Ounces
To convert kilograms to ounces, multiply the number of kilograms by 35.27396195. This factor comes from the exact definition of the avoirdupois ounce as 28.349523125 grams, and the fact that one kilogram contains exactly 1,000 grams.
The formula is:
ounces = kilograms x 35.27396195
For example, to convert 2.5 kg to ounces: 2.5 x 35.27396195 = 88.185 oz (rounded to 3 decimal places).
The Avoirdupois Ounce vs the Troy Ounce
There are two common types of ounce used in different contexts. The avoirdupois ounce (28.349523125 g) is the everyday ounce used for food, produce, body weight, and general merchandise in countries that use imperial units. The troy ounce (31.1034768 g) is used only for precious metals such as gold, silver, and platinum.
This converter uses the avoirdupois ounce, which is the standard for almost all non-precious-metal applications. If you need to convert kilograms to troy ounces, multiply kg by 32.1507 instead.
Kilograms and Ounces in Context
The kilogram is the base unit of mass in the International System of Units (SI) and is used worldwide for science, trade, and everyday measurement. New Zealand uses the metric system, so kilograms are the standard unit here.
Ounces are part of the imperial and US customary systems, still used in the United States, United Kingdom (alongside metric), and some other countries for food labelling, body weight, and cooking. Many NZ recipes sourced from the US or UK specify weights in ounces, making this conversion useful.
Quick Reference Table
| Kilograms | Ounces | Common context |
|---|---|---|
| 0.028 kg | 1 oz | Slice of bread, small chocolate bar |
| 0.113 kg | 4 oz | Quarter-pound burger patty |
| 0.227 kg | 8 oz | Half-pound steak |
| 0.454 kg | 16 oz (1 lb) | One pound of mince |
| 1 kg | 35.274 oz | Standard bag of flour or sugar |
| 2 kg | 70.548 oz | Typical newborn weight |
| 5 kg | 176.370 oz | Bag of potatoes |
| 10 kg | 352.740 oz | Large suitcase allowance |
Related Calculators
- Essential Calculators: hub for all converters and everyday tools.
- Grams to Ounces Calculator: convert grams directly to ounces.
- g to lbs Converter: convert grams to pounds.
- Unit Converter: convert between a wide range of units including weight, length, and volume.
Method: Exact conversion factor from the international definition of the avoirdupois ounce: 1 oz = 28.349523125 g (Bureau International des Poids et Mesures, BIPM; NIST Handbook 44). Therefore 1 kg = 1000 / 28.349523125 = 35.27396195 oz.
This converter uses the avoirdupois ounce, the standard unit for everyday weight measurement. Troy ounces (used for precious metals) are approximately 10% heavier at 31.1035 g each. Results are rounded to your selected precision.