How Many Ounces in a Pound

We measure any mass by weighing. Measuring in ounces and pounds is one of the globally acclaimed and popular ways of measurement.

Pounds and ounces are both units of measurement of mass that are accepted and followed in many systems of measurement including the United States of America and the United Kingdom.

The abbreviation for ounce is oz is derived from the 15th-century Italian word “onza”.

The symbol for ounce is oz or ℥. While the English words pound is derived from the Latin words “Libra”. The symbol for pounds is the lb.

Here I will discuss the pounds to ounces conversion and vice versa, which is really important to consider in our day to day measurement affairs with many things.

Before we start, it’s important to prepare ourselves with the basic facts and measures.

According to the international definition of avoirdupois, a pound is defined as equivalent to exactly 0.45359237 kilograms, which can be further divided into 16 ounces.

Therefore, 1 pound is equal to 16 ounces.

It so happens that when we are going through some delicious recipe that demands us to be careful about the measurement of various ingredients; particularly when we are baking something very tricky or we might need to be careful about some other measurements while buying or selling stuff etc too.

So next time you feel doubtful about your measurements, do not be in doubt and refer to this post.

Following are the questions we usually develop in our mind while dealing with pounds and ounces.


There are 16 ounces in a single pound. The conversion factor from pounds to ounces is 16, and 12 for troy weight.

If we need to find out about how many ounces in a pound, we just have to multiply is by the conversion factor.

There are many conversion calculators available on the internet that can help you out too.


Here is presented the ounce to pound conversion chart that will surely help you to convert the figures into the desired units of mass.

Ounces to Pounds conversion Chart

OUNCES (oz) POUNDS (lb) POUNDS + OUNCES (lb + oz)
1 oz 0.0625 lb 0 kg 28.35 g
2 oz 0.1250 lb 0 kg 56.70 g
3 oz 0.1875 lb 0 kg 85.05 g
4 oz 0.2500 lb 0 kg 113.40 g


Are you one of those people that are bad at conversions and formulas?  Are you always stuck to the conversion formula about ounces to pounds in particular? Here is how you do it:

Since, 1 pound = 16 ounces,

The conversion formula that is for pounds and ounces is: oz / 16 = lb

For example: 1oz = 0.0625 lb while 12oz = 0.75 lb

Easy, is it not?  


It is said that a slice of bread weighs around an ounce on a rough estimate. Ounce is considered as the smallest unit of the mass/weight that is used in various matters related to weight the materials.

1 ounce (oz) = 0.0625 pound (lb)

1 oz = (1/16) lb = 0.0625 lb

The mass in pounds (lb) = mass in ounces (oz) divided by 16:

m(lb) = m(oz) / 16

For instance, lets convert 5 oz to pounds:

m(lb) = 5 oz / 16 = 0.3125 lb


It is quite easy to convert the pounds into ounces. So, you just have to multiply the pounds figure by the number 16 and get the equal ounces of it. It is a simple method you can try by your own while making recipes or weighing the cake ingredients.

Till now we have learned that,

1 pound (lb) = 16 ounces (oz)

Pound x 16 = oz (Ounces)


Before the reign of Queen Elizabeth, the very first avoirdupois system of weights was yet to be developed and many alterations in the units and values were created. The last major change also came in the time of Queen Elizabeth, which included the addition of troy grain, defined as 7000 grains.

The Unites States follows the Imperial system that was actually derived from the measurement system used by the British. Sometimes well till the French Revolution, The United States had no proper system of measurement, until they adopted the proper measurements from the British.

To date, there still remain certain differences in their different measurements.


The Imperial System of weights that are also known as the avoirdupois system of weights is hailed to be the standard weight system in the United States and it’s even largely prevalent  in the United Kingdom. The system declares a pound (lb) of 16 ounces (oz). The avoirdupois pound is defined in terms of the kg as being exactly 0.45359237 kilograms. Previously standard pound weights were created by the British treasury.

Since the United States gained its independence, there obviously had been significant but slight variations to the avoirdupois weight system in the UK and so the US system became the American Customary System, however the basic units like the pound and the ounce are the same in the American Customary System as in the British Imperial System yet.

ounce oz 1/16 0.0283kg Commonly used in US and UK recipes
pound lb 1 0.45359237kg Base unit of avoirdupois system

So that is the end of guide about the basic conversion formulas related to the pounds and ounces. Now, it will be easier to make the recipes, weigh the dry or wet substances and bake the cakes by your own. You can simply put a relevant formula on the stuff and get the results in no time. As far as you know how to convert the units of mass and weight from one to another form, you can never face any difficulty in making the recipes or weighing the substances.