The formula this calculator uses
Converting between units
Value in Base Unit = Value × (Factor for From-unit)
Result = Value in Base Unit ÷ (Factor for To-unit)
Base unit used: kilograms
About Weight Converter
In everyday use, weight and mass are treated as the same thing, and this converter follows that common convention — kilograms and pounds are used to mean the mass of an object regardless of gravity, which is accurate enough for cooking, shipping, luggage limits, and virtually every practical use case.
How to use this calculator
- Enter the value you want to convert.
- Select the unit you're converting from.
- Select the unit you want to convert to.
- The result updates instantly.
Frequently asked questions
How does the weight converter work?
Enter a value, pick the unit you're converting from and the unit you want, and the result updates instantly using kilograms as the common reference point.
Are the conversion factors exact?
Most factors used here are the internationally defined exact values (such as 1 inch = 0.0254 meters). A small number of larger units carry rounding beyond several decimal places, which won't be noticeable for everyday use.
What's the base unit used internally?
This calculator converts every unit to kilograms first, then to your target unit, so any combination of supported units can be converted directly.
Can I convert a very small or very large number?
Yes, the calculator handles decimals and large numbers the same way — just type the value into the input field.