التحويل
Weight & Mass Converter
Convert kilograms, pounds, ounces, stone, grams, and more — all results shown simultaneously.
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Formula: BIPM / NISTLast verified July 2026
Enter a value above to see conversions in all units
Select your starting unit from the dropdown
Quick reference — Kilograms conversions
| kg | mg | g | t | oz |
|---|---|---|---|---|
| 1 | 1,000,000 | 1,000 | 0.001 | 35.273962 |
| 5 | 5,000,000 | 5,000 | 0.005 | 176.36981 |
| 10 | 10,000,000 | 10,000 | 0.01 | 352.739619 |
| 25 | 25,000,000 | 25,000 | 0.025 | 881.849049 |
| 50 | 50,000,000 | 50,000 | 0.05 | 1,763.6981 |
| 100 | 100,000,000 | 100,000 | 0.1 | 3,527.3962 |
أمثلة عملية
Body weight: 75 kg in pounds and stone
Enter 75 in the kg field. Result: 165.35 lb, 11 stone 11.35 lb. UK health checks often use stone; US uses pounds; the rest of the world uses kg.
Parcel weight: 2.5 kg in ounces
2.5 kg = 2,500 g = 88.18 oz. Most US e-commerce weight limits are expressed in oz or lb, so this conversion is essential for international shipping.
Gold price: 1 troy ounce in grams
Note: this converter uses avoirdupois ounces (28.3495 g). A troy ounce (used for precious metals) = 31.1035 g. Enter 31.1035 g to convert a troy ounce to other units.
الأسئلة الشائعة
~4 min readHow many pounds in a kilogram?▾
Exactly 2.20462 pounds. Or conversely, 1 lb = 0.453592 kg. This is based on the international avoirdupois pound definition of exactly 0.45359237 kg, adopted in 1959.
What is the difference between mass and weight?▾
Mass is the amount of matter in an object (measured in kg or lb) and does not change with location. Weight is the gravitational force on that mass (measured in Newtons) and would be different on the Moon. In everyday use, "weight" and "mass" are used interchangeably — this converter handles the everyday meaning.
How many grams in an ounce?▾
Exactly 28.349523125 grams. This is the avoirdupois ounce, used for everyday goods. The troy ounce (used for gold and silver) is heavier at 31.1034768 grams.
What is a stone in kg?▾
One stone = 14 pounds = 6.35029 kg. Stone is used in Ireland and the UK for expressing body weight. To convert your weight in stone to kg: multiply the stones by 6.35, then add (pounds × 0.4536).
How many kilograms in a metric tonne?▾
Exactly 1,000 kilograms. A metric tonne is different from a US short ton (907.185 kg) and a UK long ton (1,016.05 kg). This converter uses metric tonnes and US short tons.
Why does the US use pounds instead of kilograms?▾
The US retained customary units (derived from British Imperial) when the Metric Conversion Act of 1975 made metrication voluntary. US trade, food labelling, and body weight use pounds; science, medicine, and pharmaceuticals use metric globally including in the US.