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Weight and Mass converter
Mass, from micrograms to tons. 16 units, converted from one table of exact factors.
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Worth knowing. An ounce of gold and an ounce of flour are not the same weight — gold is sold in troy ounces, which are about 10% heavier. Both are in the table.
1 kilogram in every other weight and mass unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 kilogram | 1,000 | gram (g) |
| 1 kilogram | 1,000,000 | milligram (mg) |
| 1 kilogram | 1,000,000,000 | microgram (µg) |
| 1 kilogram | 0.001 | metric ton (t) |
| 1 kilogram | 2.2046226 | pound (lb) |
| 1 kilogram | 35.273962 | ounce (oz) |
| 1 kilogram | 0.15747304 | stone (st) |
| 1 kilogram | 0.0011023113 | US ton (ton) |
| 1 kilogram | 0.00098420653 | long ton (long ton) |
| 1 kilogram | 5,000 | carat (ct) |
| 1 kilogram | 15,432.358 | grain (gr) |
| 1 kilogram | 32.150747 | troy ounce (oz t) |
| 1 kilogram | 2.6792289 | troy pound (lb t) |
| 1 kilogram | 564.38339 | dram (dr) |
| 1 kilogram | 0.068521766 | slug (slug) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| kilogram | kg | The SI base unit. Redefined in 2019 in terms of the Planck constant, so it no longer depends on a metal cylinder in Paris. |
| gram | g | One thousandth of a kilogram. Exact. |
| milligram | mg | One millionth of a kilogram. Exact. |
| microgram | µg | One billionth of a kilogram. |
| metric ton | t | 1,000 kg. Exact. Also called a tonne. |
| pound | lb | Exactly 0.45359237 kg since 1959. |
| ounce | oz | One sixteenth of a pound. Exact. |
| stone | st | 14 pounds. Exact. Still used for body weight in Britain and Ireland. |
| US ton | ton | 2,000 pounds. Exact. Also called a short ton. |
| long ton | long ton | 2,240 pounds. Exact. The British ton. |
| carat | ct | Exactly 200 mg since 1907. Used for gemstones. |
| grain | gr | One 7,000th of a pound. Exact. Used for bullets and medicines. |
| troy ounce | oz t | Exact. Heavier than an ordinary ounce; used for precious metals. |
| troy pound | lb t | 12 troy ounces. Exact. Lighter than an ordinary pound. |
| dram | dr | One sixteenth of an ounce. Exact. |
| slug | slug | The imperial unit of mass. One slug accelerates at 1 ft/s² under one pound of force. |