Weight Converter
Convert kilograms (kg), pounds (lb), ounces (oz), grams (g), stone (st), tonnes (t), US ton (short), UK ton (long), troy ounce (ozt), carat (ct) and microgram (µg).
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About This Converter
This weight converter supports 12 units from micrograms to metric tonnes, using internationally recognized exact factors such as 1 lb = 0.45359237 kg and 1 troy ounce = 31.1034768 g. All calculations pass through a kilogram base for maximum accuracy. It is ideal for converting cooking ingredients between grams and ounces, checking luggage weight limits in kg versus pounds, valuing precious metals in troy ounces, or comparing shipping weights across US short tons, UK long tons, and metric tonnes.
FAQ
Is a metric tonne the same as a "ton"?
A tonne (t) is 1,000 kg. A US (short) ton is 2,000 lb (≈907.18474 kg). A UK (long) ton is 2,240 lb (≈1,016.0469 kg).
What's the difference between ounce (oz) and troy ounce (ozt)?
Ounce (avoirdupois) is used for common goods (1 oz = 28.349523125 g). Troy ounce is used for precious metals (1 ozt = 31.1034768 g).
Is carat mass exact?
Yes. 1 ct = 200 mg by definition.
Tips for using this converter
Select the unit first (e.g., lb), enter a number once, and all tiles update instantly. On mobile, press Enter to hide the keyboard.