# How Many Grain in an Ounce?

Grain is a unit of measurement that is used to weigh small amounts of objects, such as bullets, seeds, and precious metals. It is equal to 1/7000th of a pound, or approximately 0.0648 grams.

The grain is commonly used in the United States in the avoirdupois system of measurement, which is used for most household items, as well as in the troy system of measurement, which is used for precious metals like gold and silver.

The grain is also used in the apothecaries' system of measurement, which is used for measuring medications.

## Meaning of Ounce

An ounce is a unit of measurement commonly used for measuring mass or weight. It is abbreviated as "oz" and is equal to 1/16th of a pound or 28.35 grams.

The term "ounce" can also be used in other contexts, such as liquid volume. In this case, it is referred to as a fluid ounce (fl oz) and is used to measure the volume of liquids such as water, milk, or juice. One fluid ounce is equal to approximately 29.57 milliliters.

In general, an ounce is a relatively small unit of measurement that is often used to measure small amounts of objects or substances, such as spices, herbs, or precious metals like gold or silver.

## How Many Grain in an Ounce?

The number of grains in an ounce varies depending on the system of measurement being used.

In the avoirdupois system, which is commonly used in the United States, there are 437.5 grains in one ounce.

In the troy system, which is commonly used for measuring precious metals, there are 480 grains in one ounce.

In the apothecaries' system, which is used for measuring drugs and medicines, there are 480 grains in one ounce.

### 1. The avoirdupois system

The avoirdupois system is a system of measurement used primarily in the United States and the United Kingdom for measuring weight or mass. It is commonly used for household items, such as food, beverages, and personal care products.

In the avoirdupois system, the basic unit of weight is the pound (lb), which is equal to 16 ounces (oz). There are also smaller units of weight, including the ounce (oz) and the grain (gr). One ounce is equal to 437.5 grains, and one pound is equal to 7,000 grains.

The avoirdupois system is also used for measuring some non-weight quantities, such as length (inches, feet, and yards) and volume (fluid ounces and gallons). However, it is primarily known for its use in measuring weight or mass.

### 2. The Troy System

The troy system is a system of measurement used primarily for weighing precious metals like gold, silver, and platinum. It is named after the city of Troyes, France, which was a major center of trade in medieval times.

In the troy system, the basic unit of weight is the troy ounce (oz t), which is equal to 31.1034768 grams. There are also smaller units of weight, including the pennyweight (dwt) and the grain (gr). One troy ounce is equal to 20 pennyweights, and one pennyweight is equal to 24 grains.

The troy system is different from the avoirdupois system used for most other purposes, in which there are 16 ounces in one pound. It is important to note that when buying and selling precious metals, it is typically priced based on the troy ounce, not the regular ounce used in other systems of measurement.

### 3. The Apothecaries' System

The apothecaries' system is a system of measurement used primarily for measuring medications and other pharmaceuticals. It is based on the troy system of measurement, but with some differences in the conversion factors used.

In the apothecaries' system, the basic unit of weight is the grain (gr), which is the same as in the troy system. There are also larger units of weight, including the drachm (dr) and the ounce (oz). One drachm is equal to 60 grains, and one ounce is equal to 8 drachms or 480 grains.

In addition to weight, the apothecaries' system also includes units for volume, such as the minim (m), the fluid dram (fl dr), and the fluid ounce (fl oz). One minim is equal to approximately 0.0616 milliliters, one fluid dram is equal to approximately 3.697 milliliters, and one fluid ounce is equal to approximately 29.573 milliliters.

While the apothecaries' system is still used in some countries, it has largely been replaced by the metric system for measuring medications and other pharmaceuticals.

Real also: Quadratic Equation for Class 10

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