Pounds To Grams Conversion (lb To G) - Inch Calculator

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• Pounds to Grams Converter
• How to Convert Pounds to Grams
• How Many Grams Are in a Pound?
• What Is a Pound?
• What Is a Gram?
• Pound to Gram Conversion Table
• References

Person Icon By Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Sexton, J. (n.d.). Pounds to Grams Converter. Inch Calculator. Retrieved January 1, 2026, from https://www.inchcalculator.com/convert/pound-to-gram/

How to Convert Pounds to Grams

To convert a measurement in pounds to a measurement in grams, multiply the weight by the following conversion ratio: 453.59237 grams/pound.

Since one pound is equal to 453.59237 grams, you can use this simple formula to convert:

grams = pounds × 453.59237

The weight in grams is equal to the weight in pounds multiplied by 453.59237.

For example, here's how to convert 5 pounds to grams using the formula above.

grams = (5 lb × 453.59237) = 2,267.96185 g

How Many Grams Are in a Pound?

There are 453.59237 grams in a pound, which is why we use this value in the formula above.

1 lb = 453.59237 g

Pounds and grams are both units used to measure weight. Keep reading to learn more about each unit of measure.

What Is a Pound?

Pounds are a widely used unit of weight in the United States. The National Bureau of Standards approved the international definition of the pound for use in the United States in 1959 after an agreement between six nations referred to as the International Yard and Pound Agreement.[1]

One pound is equal to 16 ounces, or 0.45359237 kilograms. In the avoirdupois or apothecaries' systems, one pound is equal to 7,000 grains.[2]

The pound is a US customary and imperial unit of weight. A pound is sometimes also referred to as a common ounce. Pounds can be abbreviated as lb (plural lbs), and are also sometimes abbreviated as lbm or #. For example, 1 pound can be written as 1 lb, 1 lbm, or 1 #, and 2 pounds can be written as 2 lbs.

Learn more about pounds.

What Is a Gram?

A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, of water.

The gram, or gramme, is an SI unit of weight in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.

Learn more about grams.

Pound to Gram Conversion Table

Table showing various pound measurements converted to grams.

Pounds	Grams
1 lb	453.59 g
2 lb	907.18 g
3 lb	1,361 g
4 lb	1,814 g
5 lb	2,268 g
6 lb	2,722 g
7 lb	3,175 g
8 lb	3,629 g
9 lb	4,082 g
10 lb	4,536 g
11 lb	4,990 g
12 lb	5,443 g
13 lb	5,897 g
14 lb	6,350 g
15 lb	6,804 g
16 lb	7,257 g
17 lb	7,711 g
18 lb	8,165 g
19 lb	8,618 g
20 lb	9,072 g
21 lb	9,525 g
22 lb	9,979 g
23 lb	10,433 g
24 lb	10,886 g
25 lb	11,340 g
26 lb	11,793 g
27 lb	12,247 g
28 lb	12,701 g
29 lb	13,154 g
30 lb	13,608 g
31 lb	14,061 g
32 lb	14,515 g
33 lb	14,969 g
34 lb	15,422 g
35 lb	15,876 g
36 lb	16,329 g
37 lb	16,783 g
38 lb	17,237 g
39 lb	17,690 g
40 lb	18,144 g

References

1. National Bureau of Standards, Refinement of Values for the Yard and Pound, U.S. Department of Commerce, July 1, 1959, https://www.nist.gov/system/files/documents/2017/05/09/frn-59-5442-1959.pdf
2. Encyclopædia Britannica, Avoirdupois weight, https://www.britannica.com/science/avoirdupois-weight

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