Weight converter tool provides easy weight conversion of one type of measuring units of weight to another type of units. Metric weight units are based on the weight of respective metric volumes of water. For example, a litre of water weighs one kilogram.

## Weight Converter for 9 Types of Units

## What is Grain units ?

**Grain** is one of the earliest units of common measure and the smallest one of troy systems. A unit of Grain weight is equal to 0.065 gram, or ^{1}/_{7,000} pound.

## What is the unit U ?

The atomic mass **unit** is a **unit** of measurement of weight.An atomic mass **unit** (**u**) is a **unit** of mass used to express atomic and molecular weights. One atomic mass **unit** (1u) is defined as one twelfth (1/12) of the mass of an atom of carbon-12.

## Conversion of specific gravity (SG)

Specific gravity (SG ) is the ratio of the density of a substance and the density of water taken at 4 degree celsius. In other words:

**The density of Substance ÷ Density of Water at 4 ℃**

- In CGS (centimetre-gram-inch) units, the density of the substance is equal to the specific gravity.
- For MKS (meters, kilograms, seconds) multiply by 10
^{3}, because the density of water in that system is 1,000 kg/m^{3}. - Multiply by 1.94 slug/ft
^{3}, if it is the*imperial system*.

## Ounce as a unit of Weight

**Ounce**, unit of weight in the avoirdupois system, equal to ^{1}/_{16} pound (437 ^{1}/_{2} grains), and in the troy and apothecaries’ systems, equal to 480 grains, or ^{1}/_{12} pound.

## Stone as a Unit of Weight

The **stone** is a unit of mass equal to 6.35 Kgs in Imperial units or 14 pounds in the English system. The stone continues in customary use in the United Kingdom and Ireland for body weight. In Asia, however, the stone unit is used as **picul **or **tam** a as a unit of weight .

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