Pound to Gram Converter
Weight · unit-converter
Convert Pound to Gram with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Pound (lb)
To: Gram (g)
About Pound
The international avoirdupois pound is exactly 0.45359237 kg. It is the standard pound for weight in the US and for many trade weights.
About Gram
The gram is one thousandth of a kilogram. Recipes, lab work, and small masses typically use grams.
How to convert pounds to grams
1 pound is equal to 453.59237000000002 gram:
1 lb = (453.59237 g ÷ 1 g) g = 453.59237000000002 g
Each pound is defined as 453.59237 g and each gram as 1 g, so one lb equals 453.59237 ÷ 1 g = 453.59237000000002 g.
Let w(lb) be the numeric value of the same mass measured in Pound (lb), and w(g) the value in Gram (g). Then:
w(g) = w(lb) × (453.59237 / 1)
Equivalently, divide by how many lb fit into one g (grams per g divided by grams per lb):
w(g) = w(lb) ÷ 0.00220462262185
Or: gram = pound ÷ 0.00220462262185
Examples
Example #1: Convert 20 lb to gram
20 lb = 20 lb × (453.59237/1) g = 9071.8474 g
20 lb = 20 lb ÷ 0.00220462262185 = 9071.8474 g
Example #2: Convert 50 lb to gram
50 lb = 50 lb × (453.59237/1) g = 22679.6185 g
50 lb = 50 lb ÷ 0.00220462262185 = 22679.6185 g
Summary
To convert Pound to Gram, multiply the value in lb by the ratio of grams per lb divided by grams per g. Equivalently: value_g = value_lb × (453.59237 / 1). Numerically, 1 lb equals 453.59237 g.
Relationship context
You are converting between imperial / UK (stone, long ton, pound, ounce) (Pounds) and metric (SI) (Grams). Metric mass is decimal from the gram; US and imperial masses use pounds and ounces with fixed definitions relative to the kilogram. The numeric factor used here is 4.535924e+2.
Conversion tables
| Pound (lb) | Gram (g) |
|---|---|
| 0.1 | 45.359237 |
| 1 | 453.59237 |
| 2 | 907.18474 |
| 3 | 1,360.77711 |
| 4 | 1,814.36948 |
| 5 | 2,267.96185 |
| 6 | 2,721.55422 |
| 7 | 3,175.14659 |
| 8 | 3,628.73896 |
| 9 | 4,082.33133 |
| Pound (lb) | Gram (g) |
|---|---|
| 10 | 4,535.9237 |
| 20 | 9,071.8474 |
| 30 | 13,607.7711 |
| 40 | 18,143.6948 |
| 50 | 22,679.6185 |
| 60 | 27,215.5422 |
| 70 | 31,751.4659 |
| 80 | 36,287.3896 |
| 90 | 40,823.3133 |
| 100 | 45,359.237 |