Ounce to Kilogram Converter
Enter the value that you want to convert ounce (oz) to kilogram (kg) or kilogram to ounce.Also written as OZ to KG conversion.
1 ounce = 0.0283495 kilogram
Formula: kilogram = ounce value × 0.0283495
OZ to KG — ounce to kilogram
10 ounce = 0.28350 kilogram
Popular Weight Converters:
How Ounce Relates to Kilogram
The Ounce Explained
Ounce (oz) is a unit of weight measurement. 1 ounce is equal to 0.0283495 kilogram.
The Kilogram Explained
Kilogram (kg) is a unit of weight measurement. 1 kilogram is equal to 35.2739619 ounce.
Understanding Weight Conversions
Weight unit conversions are among the most frequently performed in daily life. International commerce ships in metric tonnes and kilograms, while US domestic logistics uses pounds and ounces. Recipes from different countries use different systems — a European cake recipe in grams versus an American one in cups and ounces. Pharmacists convert between milligrams and grains for medication dosing. Athletes track body weight across metric and imperial systems depending on their country and sport federation requirements.
ounce to kilogram metric conversion table
| 0.01 oz | = | 0.00028 kg |
| 0.1 oz | = | 0.00283 kg |
| 1 oz | = | 0.02835 kg |
| 2 oz | = | 0.05670 kg |
| 3 oz | = | 0.08505 kg |
| 4 oz | = | 0.11340 kg |
| 5 oz | = | 0.14175 kg |
| 6 oz | = | 0.17010 kg |
| 7 oz | = | 0.19845 kg |
| 8 oz | = | 0.22680 kg |
| 9 oz | = | 0.25515 kg |
| 10 oz | = | 0.28350 kg |
| 11 oz | = | 0.31184 kg |
| 12 oz | = | 0.34019 kg |
| 13 oz | = | 0.36854 kg |
| 14 oz | = | 0.39689 kg |
| 15 oz | = | 0.42524 kg |
| 16 oz | = | 0.45359 kg |
| 17 oz | = | 0.48194 kg |
| 18 oz | = | 0.51029 kg |
| 19 oz | = | 0.53864 kg |
| 20 oz | = | 0.56699 kg |
| 30 oz | = | 0.85049 kg |
| 40 oz | = | 1.13398 kg |
| 50 oz | = | 1.41748 kg |
| 60 oz | = | 1.70097 kg |
| 70 oz | = | 1.98447 kg |
| 80 oz | = | 2.26796 kg |
| 90 oz | = | 2.55146 kg |
| 100 oz | = | 2.83495 kg |
| 200 oz | = | 5.66990 kg |
| 300 oz | = | 8.50486 kg |
| 400 oz | = | 11.33981 kg |
| 500 oz | = | 14.17476 kg |
| 600 oz | = | 17.00971 kg |
| 700 oz | = | 19.84467 kg |
| 800 oz | = | 22.67962 kg |
| 900 oz | = | 25.51457 kg |
| 1000 oz | = | 28.34952 kg |
How to Convert OZ to KG (Ounce to Kilogram)?
We can convert ounce to kilogram by using an example.
Example:
Convert 20 Ounce to Kilogram?
We know 1 Ounce = 0.0283495 kilogram; 1 Kilogram = 35.2739619 ounce.
20 ounce = ___kg
20 × 0.0283495 = 0.56699 kg (we know 1 ounce = 0.0283495 kilogram)
Answer:
20 ounce = 0.56699 kilogram
How to Convert Ounces to Kilograms (Step-by-Step)
Converting ounces to kilograms bridges the US/imperial system to metric, commonly needed for cooking large quantities, precious metal trading, and converting baby weights for international records. The conversion factor is 1 oz = 0.0283495 kg.
- Identify the weight in ounces (oz) to convert.
- Multiply the ounce value by 0.0283495 to get kilograms.
- Alternatively, divide ounces by 35.274 for the same result.
- Round to 2-3 decimal places depending on required precision.
Common Ounces to Kilograms Conversions
Ounce quantities commonly encountered in cooking, precious metals, and product weights converted to kilograms.
| Ounce | Kilogram |
|---|---|
| 8 oz | 0.227 kg |
| 16 oz | 0.454 kg |
| 24 oz | 0.680 kg |
| 32 oz | 0.907 kg |
| 35.274 oz | 1.000 kg |
| 48 oz | 1.361 kg |
| 64 oz | 1.814 kg |
| 100 oz | 2.835 kg |
Solved Examples: Ounces to Kilograms
Question 1: A recipe yields 40 oz of jam. How many kg is this for labeling?
Solution:
Kilograms = 40 × 0.0283495
= 1.134 kg
Answer: 40 oz of jam = 1.13 kg (label as 1.1 kg net weight).
Question 2: A gold bar weighs 32.15 troy ounces. Convert to kilograms (1 troy oz = 31.1035 g).
Solution:
First convert troy oz to grams: 32.15 × 31.1035 = 999.98 g
Then to kg: 999.98 ÷ 1000 = 1.000 kg
Answer: 32.15 troy ounces ≈ 1 kg — this is the standard "kilo bar" in gold trading.
Question 3: A baby weighs 120 oz (7 lbs 8 oz). Express in kg for a birth certificate.
Solution:
Kilograms = 120 × 0.0283495
= 3.402 kg
Answer: 120 oz = 3.40 kg (standard healthy birth weight).
Practice Questions: Ounces to Kilograms
Try solving these on your own to test your understanding:
- Convert 50 oz to kg. (Answer: 1.417 kg)
- A package weighs 28 oz. Express in kg. (Answer: 0.794 kg)
- Convert 200 oz to kg. (Answer: 5.670 kg)
- A precious metal ingot is 10 troy oz. Convert to kg. (Answer: 0.311 kg)
- Convert 80 oz to kg. (Answer: 2.268 kg)
Precious Metals: Troy Ounces to Kilograms
Gold and silver are traded in troy ounces (31.1035 g), not avoirdupois ounces (28.3495 g). A standard gold "kilo bar" = 32.1507 troy ounces = 1 kg exactly. Gold prices quoted as $/troy oz can be converted to $/kg by multiplying by 32.1507. When buying gold internationally, the price per kg is standard for large transactions while retail uses troy ounces.
Cooking in Bulk: Converting US Recipes to Metric
Commercial kitchens scaling US recipes to metric need oz-to-kg conversion for ordering supplies. A recipe using 96 oz (6 lbs) of flour = 2.72 kg — you'd order 3 kg bags. Restaurant supply companies in metric countries price per kg, so converting your ounce-based recipe to kg helps with accurate cost calculations and inventory management.
Baby Weight: US Ounces to International Kilograms
US hospitals report baby weight in lbs/oz but international growth charts use kg. WHO growth standards use kg: average newborn 3.3 kg (116 oz), low birth weight < 2.5 kg (88 oz), very low < 1.5 kg (53 oz). When sharing baby weight internationally or using WHO growth chart apps, converting ounces to kg ensures you plot on the correct percentile.
Key Takeaways
- Multiply ounces by 0.0283495 (or divide by 35.274) to get kilograms.
- Quick mental math: 35 oz ≈ 1 kg.
- For gold/silver, use troy ounces: 32.15 troy oz = 1 kg.
- Troy ounces (31.1 g) ≠ regular ounces (28.35 g) — don't mix them up.
- Baby weight: 120 oz = 3.4 kg (healthy newborn average).
- 16 oz = 0.454 kg (1 pound) is the fundamental reference point.
Ounce to Kilogram Conversion Formula
kilogram = ounce × 0.0283495
1 ounce = 0.0283495 kilogram
1 kilogram = 35.2739619 ounce
Reverse: ounce = kilogram × 35.2739619
Frequently Asked Questions
How many kilogram are in 1 ounce?
There are 0.0283495 kilogram in 1 ounce. To convert ounce to kilogram, multiply the value by 0.0283495.
How do I convert ounce to kilogram?
Multiply your ounce value by 0.0283495 to get the equivalent in kilogram. For example, 5 ounce = 5 × 0.0283495 = 0.14175 kilogram.
How do I convert kilogram to ounce?
Multiply your kilogram value by 35.2739619 to get the equivalent in ounce. Alternatively, divide by 0.0283495.
What is 10 ounce in kilogram?
10 ounce is equal to 0.28350 kilogram.
What is 100 ounce in kilogram?
100 ounce is equal to 2.83495 kilogram.