About this Weight converter
Convert kilograms, pounds, grams, ounces, milligrams, and metric tons instantly. Enter a value, choose your source and target unit, and get an accurate result for cooking, fitness tracking, shipping, and scientific reference.
How to use this weight converter
Enter the number you want to convert.
Choose the source unit and target unit from the dropdowns.
Review the live result or open a preset example to jump into a common conversion.
When to use this converter
You are following a recipe that uses grams or ounces but your kitchen scale is set to a different unit and you need a quick conversion before measuring.
You are tracking body weight and want to compare a reading in kilograms to a reference value in pounds, or vice versa.
You are calculating shipping costs and the carrier requires the parcel weight in a unit different from the one on your scale.
You are working with a scientific or medical reference that lists dosages or material weights in milligrams or grams and need to convert to a more familiar unit.
Common problems and fixes
The result looks wrong when converting between pounds and kilograms.
One kilogram equals approximately 2.205 pounds. If you entered 70 kg and expected roughly 154 lb, that is correct. Double-check the direction — make sure kg is the source and lb is the target, not the reverse.
I need to convert stones to kilograms but stones is not available.
Stones are not included in this converter. As a reference, one stone equals 6.35 kilograms. Convert your stone value to pounds first (1 stone = 14 pounds), then use this tool to go from pounds to kilograms.
My result is in scientific notation and I cannot read it easily.
Very small values — such as milligrams converted to metric tons — produce results below one millionth, which display in scientific notation. For example, 1 mg = 1e-9 metric tons. The value is correct; scientific notation is used to preserve accuracy.
Available units
Milligram
mg
Gram
g
Kilogram
kg
Metric ton
t
Ounce
oz
Pound
lb
Related unit converter pages
Frequently asked questions
How do I convert kilograms to pounds?
Select kilograms as the source unit and pounds as the target. One kilogram equals approximately 2.205 pounds.
How many grams are in an ounce?
One ounce equals approximately 28.35 grams. Select ounces as the source and grams as the target to calculate any value.
How do I convert pounds to kilograms?
Select pounds as the source unit and kilograms as the target. One pound equals approximately 0.454 kilograms.
Is this weight converter free to use?
Yes. It is free and works directly in your browser with no account required.
Can I convert milligrams to grams?
Yes. Select milligrams as the source and grams as the target. One gram equals 1000 milligrams.
What weight units does this converter support?
Milligrams, grams, kilograms, metric tons, ounces, and pounds.