Enter any value to convert across all weight units
Convert between kilograms, pounds, ounces, grams, stone, tons, milligrams, and micrograms instantly.
Weight and mass are described with different units around the world. Kilograms and grams belong to the metric system, while pounds and ounces are common in the United States. Stone is still used informally for body weight in the United Kingdom and Ireland. This tool converts all displayed units from one normalized value so the results remain consistent.
One kilogram equals approximately 2.2046226218 pounds, and one pound equals exactly 0.45359237 kilogram. A pound contains 16 ounces. A stone contains 14 pounds. For smaller quantities, one kilogram contains 1,000 grams and one gram contains 1,000 milligrams.
A 70 kg value is approximately 154.32 lb. In stone, divide 154.32 by 14 to obtain about 11.02 st, commonly expressed as roughly 11 stone 0.3 pounds.
Use kilograms for international, medical, scientific and fitness contexts unless a form specifies otherwise. Pounds are convenient for U.S. household and shipping measurements. Grams work well for food, ingredients and small packages. Ounces may appear in cooking and shipping, so confirm whether the context means weight ounces or fluid ounces; they are not interchangeable.
For freight or construction materials, the word “ton” needs special attention. A U.S. short ton is 2,000 pounds, an imperial long ton is 2,240 pounds, and a metric tonne is 1,000 kilograms. Choose the exact unit named by the document instead of assuming every ton is equal.
Weight conversion helps with travel baggage limits, shipping labels, recipes, fitness records and product specifications. Check whether a limit is exact or approximate before rounding. For example, an airline allowance stated in kilograms should be compared with the unrounded kilogram value even if your home scale displays pounds. Shipping companies may also calculate charges from dimensional weight rather than scale weight, so converting the physical mass alone may not predict the final price. For medication or laboratory quantities, never substitute a general calculator for professional instructions.
How many pounds are in a kilogram? One kilogram is approximately 2.20462 pounds.
How many ounces are in one pound? There are exactly 16 avoirdupois ounces in a pound.
Are kilograms weight or mass? A kilogram is formally a unit of mass, although everyday language often calls a scale reading “weight.”