Weight Converter Calculator

Work out weight converter instantly with clear inputs, formula shown and shareable results.

About Weight Converter Calculator

Every mass unit is defined as a multiple of the kilogram, so this converter works in two steps: multiply the input by the source unit's factor to reach kilogram, then divide by the target unit's factor. That is why any pair in the list converts correctly without needing a separate formula for each combination.

Formulas

Two-step conversion

result = value × factor(from) ÷ factor(to)

Base unit

base (kilogram) = value × factor(from)

Worked example

With the default values below, Weight Converter Calculator returns Converted Value of 2.204623. Change any input above and every figure here is recalculated in your browser.

Inputs used

Value: 1
From unitone of Milligram (mg), Gram (g), Kilogram (kg), Tonne (t), Ounce (oz), Pound (lb), Stone (st), Troy ounce (ozt), Carat (ct), Grain (gr): Kilogram (kg)
To unitone of Milligram (mg), Gram (g), Kilogram (kg), Tonne (t), Ounce (oz), Pound (lb), Stone (st), Troy ounce (ozt), Carat (ct), Grain (gr): Pound (lb)

Results

Converted Value: 2.204623
Result Unit: Pound (lb)
Value in kilogram (base): 1.000000
Multiplier Applied: 2.20462262

Step by step

1Values used
2Two-step conversion
3Base unit
4Converted Value= 2.204623
5Result Unit= Pound (lb)
6Value in kilogram (base)= 1.000000
7Multiplier Applied= 2.20462262

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 8 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why convert through kilogram instead of directly?

With 10 units there would be 90 direct pairs to maintain. Routing through kilogram needs only one factor per unit and gives identical results.

Does the order of the two dropdowns matter?

Yes — the first is the unit your number is already in, the second is the unit you want. Swapping them inverts the result.