Kilograms to Ounces Converter (kg to oz)
Enter a weight in kilograms to get the exact equivalent in avoirdupois ounces (the everyday oz used for food and body weight), troy ounces (used for precious metals), and a pounds-plus-ounces breakdown. Switch to reverse mode to convert ounces back to kilograms. Results update as you type.
Formula
Worked example
5 kg × 35.27396 = 176.3698 oz (avoirdupois). In troy ounces: 5 × 32.15075 = 160.7537 oz t. As pounds and ounces: 5 kg × 2.20462 = 11.0231 lb = 11 lb 0.37 oz.
How to convert kilograms to ounces
The conversion is a simple multiplication. One kilogram equals exactly 35.27396194958 avoirdupois ounces, so you multiply your kilogram value by that factor to get ounces. For example, 5 kg times 35.27396 gives 176.3698 oz. In the other direction, one avoirdupois ounce is exactly 28.349523125 grams (or 0.028349523125 kg), so to reverse the conversion you multiply ounces by 0.028349523125. The relationship comes from the international definition: the kilogram is the SI base unit of mass and the avoirdupois ounce is defined as exactly 28.349523125 g.
Avoirdupois ounce vs troy ounce
There are two ounces in common use and confusing them is easy. The avoirdupois ounce (abbreviated oz) is the everyday unit used for food, body weight, postal weights and most goods. It equals 28.3495 g. The troy ounce (oz t) is used exclusively for precious metals such as gold, silver and platinum. It is slightly heavier at 31.1035 g per troy ounce, which is why 1 kg equals 32.15 troy ounces but 35.27 avoirdupois ounces. When a jeweller, commodities exchange or bullion dealer quotes a weight in ounces, they nearly always mean troy ounces. This calculator shows both so you can use whichever applies to your context.
Pounds and ounces breakdown
In the United States and United Kingdom, body weight and many goods are expressed as a combination of pounds and ounces rather than decimal ounces. Because 1 pound equals 16 avoirdupois ounces, you can convert any kilogram value by first multiplying by 2.20462 to get total pounds, taking the whole number as the pound count, and multiplying the decimal remainder by 16 to get the leftover ounces. For example, 5 kg is 11.0231 lb, which is 11 lb plus 0.0231 times 16 = 0.37 oz, giving 11 lb 0.37 oz. This calculator does that split automatically and shows it alongside the plain ounce result.
Quick reference: common everyday weights
A standard 500 ml bottle of water weighs roughly 0.5 kg (17.64 oz). A bag of flour is often 1 kg (35.27 oz) or 2 kg (70.55 oz). A typical large chicken might weigh 2 kg (about 4 lb 6.5 oz). A small baby at birth is commonly around 3 kg (105.8 oz or 6 lb 9.8 oz). International sports equipment standards often quote weights in grams or kilograms, so knowing how to convert quickly to ounces is handy when comparing products sold in different markets.
Kilograms to ounces conversion table
| Kilograms (kg) | Ounces (oz) | Troy ounces (oz t) | Pounds + Ounces |
|---|---|---|---|
| 0.1 | 3.5274 | 3.2151 | 0 lb 3.53 oz |
| 0.25 | 8.8185 | 8.0377 | 0 lb 8.82 oz |
| 0.5 | 17.6370 | 16.0754 | 1 lb 1.64 oz |
| 1 | 35.2740 | 32.1507 | 2 lb 3.27 oz |
| 2 | 70.5479 | 64.3015 | 4 lb 6.55 oz |
| 3 | 105.8219 | 96.4522 | 6 lb 9.82 oz |
| 5 | 176.3698 | 160.7537 | 11 lb 0.37 oz |
| 10 | 352.7396 | 321.5075 | 22 lb 0.74 oz |
| 20 | 705.4793 | 643.0150 | 44 lb 1.48 oz |
| 25 | 881.8491 | 803.7688 | 55 lb 1.85 oz |
| 50 | 1763.6981 | 1607.5373 | 110 lb 3.70 oz |
| 100 | 3527.3962 | 3215.0747 | 220 lb 7.40 oz |
Common kilogram values converted to avoirdupois ounces, troy ounces, and pounds+ounces.
Frequently asked questions
How many ounces are in a kilogram?
There are 35.27396194958 avoirdupois ounces in one kilogram. This comes from the international definition of the avoirdupois ounce as exactly 28.349523125 grams, and since 1 kg = 1000 g, dividing 1000 by 28.349523125 gives 35.27396. For most practical purposes, rounding to 35.274 is accurate enough.
How do I convert kg to oz without a calculator?
Multiply your kilogram value by 35.274 for a close result, or use the rough approximation of multiplying by 35 for quick mental maths (that underestimates by about 0.8%). For example, 2 kg times 35 = 70 oz (actual: 70.55 oz). If you need pounds first, multiply kg by 2.205 and then multiply the result by 16 to get ounces.
What is the difference between an ounce and a troy ounce?
An avoirdupois ounce (oz) equals 28.3495 grams and is used for food, body weight and everyday goods. A troy ounce (oz t) equals 31.1035 grams and is used for precious metals like gold and silver. One kilogram is 35.274 avoirdupois ounces but only 32.151 troy ounces. When reading a gold price quote in ounces, it is almost always per troy ounce.
How do I convert ounces back to kilograms?
Multiply the number of avoirdupois ounces by 0.028349523125. For example, 100 oz times 0.02835 = 2.835 kg. You can also switch this converter to "Ounces to kilograms" mode and type your ounce value directly.
How do I read a weight given in pounds and ounces as kilograms?
First convert the whole pounds to ounces by multiplying by 16, then add the remaining ounces, and finally multiply the total ounces by 0.0283495. For example, 6 lb 8 oz = 6 times 16 + 8 = 104 oz, and 104 times 0.0283495 = 2.948 kg.