# 4200 Grams in Pounds and oz

## How many pounds and ounces in 4.2 kilograms?

^{(*)}

(*) This result may be rounded to the nearest 1/16 of an ounce.

How many pounds and oz in 4200 grams? There are 9 lb 4 1/8 oz (ounces) in 4200 kg. Use our calculator below to transform any kg or grams value in lbs and ounces.

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### Kg to pounds and oz converter

To use this calculator, simply type the value in any box at left or at right.

Using this converter you can get answers to questions like:

- How many lb and oz are in 4200 gramss?
- 4200 gramss is equal to how many pounds and ounces?
- How to convert kilograms or grams to pounds and ounces?
- How do I convert kilograms to pounds in baby weight?

## How to convert 4.2 kilograms to pounds and ounces step-by-step

One kilogram is a unit of masss (not weight) and equals approximately 2.2 pounds. One pound equals 16 ounces exactly. If you need to be super precise, you can use one kilogram = 2.2046226218488 pounds. Once this is very close to 2.2 pounds, you will almost always want to use the simpler number to make the math easier.

### Step 1: Convert from kilograms to pounds

1 kilogram = 2.2 x pounds, so,

4.2 x 1 kilogram = 4.2 x 2.2 pounds (rounded), or

4.2 kilograms = 9.24 pounds.

### Step 2: Convert the decimal part of pounds to ounces

An answer like "9.24 pounds" might not mean much to you because you may want to express the decimal part, which is in pounds, in ounces which is a smaller unit.

So, take everything after the decimal point (0.24), then multiply that by 16 to turn it into ounces. This works because one pound = 16 ounces. Then,

9.24 pounds = 9 + 0.24 pounds = 9 pounds + 0.24 x 16 ounces = 9 pounds + 3.84 ounces. So, 9.24 pounds = 9 pounds and 3 ounces (when rounded). Obviously, this is equivalent to 4.2 kilograms.

### Step 3: Convert from decimal ounces to an usable fraction of once

The previous step gave you the answer in decimal ounces (3.84), but how to express it as an usable (practical) fraction? See below a procedure, which can also be made using a calculator, to convert the decimal ounces to the nearest usable fraction:

a) Subtract 3, the number of whole ounces, from 3.84:

3.84 - 3 = 0.84. This is the fractional part of the value in ounces.

b) Multiply 0.84 times 8 (it could be 8, 16, 32, 64, ... depending on the exactness you want) to get the number of 16th's ounces:

0.84 x 16 = 13.44.

c) Take the integer part:

int(13.44) = 13. This is the number of 16th's of a pound and also the numerator of the fraction.

Finally, 4.2 kilograms = 9 pounds 3 ^{13}/_{16} ounces.

In short:

^{13}/

_{16}ounces

Important! This result may differ from the calculator above because we've assumed here that 1 kilogram equals 2.2 pounds instead of 2.2046226218488 pounds.

## Other units also called ounce

OneÂ avoirdupois ounce is equal to approximately 28.3 g (grams). The avoirdupois ounce is used in US and British systems. Our converter uses this unit. There other units also called ounce:

- The troy ounce of about 31.1 g (grams) which is is used only for measuring the mass of precious metals like gold, silver, platinum and palladium.
- The fluid ounce (fl oz, fl. oz. or oz. fl). It is not a unit of mass but volume. It is equivalent to about 30 ml.

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