Check a shipping weight.
Weight Converter
Convert pounds to kilograms, ounces to grams, and metric tonnes to kilograms. Includes clearly labeled Taiwanese units and a copyable result.
Start here
Enter a value and select its original unit.
Browser-first
Measurements are calculated locally in your browser and are not uploaded or stored on a server.
Useful for
Check a shipping weight
Common conversions
Use a decimal point, without thousands separators.
Conversion result1 lb = 0.45359237 kg
Conversion factor: 1 lb ≈ 0.45359237 kg
Results show up to 12 significant digits; calculations use unrounded values.
Show other units
Milligrams453,592.37 mg
Grams453.59237 g
Kilograms0.45359237 kg
Metric tonnes0.00045359237 t
Ounces (avoirdupois)16 oz
Pounds1 lb
Taiwanese catty (600 g)0.755987283333 Taiwanese catty (600 g)
Taiwanese tael (37.5 g)12.0957965333 Taiwanese tael (37.5 g)
Not sure which tool to use? Read the conversion guide
Back to tool Quick answer
Weight Converter: check the same mass in different units
These everyday weight conversions express the same mass in different units. Pounds and ounces here are avoirdupois units; a metric tonne is 1,000 kilograms.
Ounces of weight are not fluid ounces. Troy ounces, US short tons, and UK long tons are not included.
Volume: Convert US cups to milliliters, gallons to liters, and cubic meters to liters. US customary, Imperial and metric cup definitions are labeled separately.
About this tool
Convert pounds to kilograms, ounces to grams, and metric tonnes to kilograms. Includes clearly labeled Taiwanese units and a copyable result.
Measurements are calculated locally in your browser and are not uploaded or stored on a server.
How to use it
- Enter a value and select its original unit.
- Choose the target unit or a common conversion preset.
- Read the result and conversion factor; swap units or copy the result as needed.
Common use cases
- Check a shipping weight
- Convert recipe weights
- Compare a scale reading in kg and lb
How the conversion works
These everyday weight conversions express the same mass in different units. Pounds and ounces here are avoirdupois units; a metric tonne is 1,000 kilograms.
1 lb = 0.45359237 kg. A 10 lb package weighs 4.5359237 kg.
Check before using the result
Ounces of weight are not fluid ounces. Troy ounces, US short tons, and UK long tons are not included.
Reference sources
FAQ
How many kilograms are in a pound?
One avoirdupois pound is exactly 0.45359237 kilograms.
Is this the right ounce for gold?
No. Gold commonly uses the troy ounce. This tool uses the ordinary avoirdupois ounce, about 28.3495 grams.
Can I convert milliliters to grams?
Not without the density of the ingredient or substance. Use the volume converter for milliliters and fluid ounces.