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Weight Converter

Convert kilograms, grams, pounds, ounces and tonnes instantly. Free, no sign-up, immediate result.

How it works

  1. 1

    Type the amount you want to convert.

  2. 2

    Pick the source and target units (swap them with the button).

  3. 3

    Read the result instantly, with up to 6 decimals when needed.

How does it work?

Weight converts with exact factors relative to the gram: a kilo is 1,000 grams, a pound 453.59237 and an ounce 28.349523125. Because they are official definitions, the result never depends on approximations.

The pound and ounce used here are the avoirdupois ones, the standard in trade and cooking in the US and the UK.

Frequently asked questions

How much is a pound in kilos?

One pound equals 0.45359237 kg. So 10 pounds are 4.5359237 kg. The converter applies the exact factor.

How many grams are in an ounce?

Exactly 28.349523125 grams. It is the avoirdupois ounce used in cooking and trade.

Are mass and weight the same thing?

Not in physics (weight depends on gravity), but in daily life and cooking they are treated the same: this converter works with the usual mass units (kg, g, lb, oz).

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