Pounds to Grams
An instant pounds-to-grams converter, with the formula and a reference table below.
| Pounds | Grams |
|---|---|
| 1 lb | 453.59237 g |
| 2 lb | 907.18474 g |
| 3 lb | 1360.77711 g |
| 5 lb | 2267.96185 g |
| 10 lb | 4535.9237 g |
| 25 lb | 11339.80925 g |
| 50 lb | 22679.6185 g |
| 100 lb | 45359.237 g |
How to use
- Enter a value in the Pounds field.
- The Grams figure appears immediately — no button to press.
- Typing in the Grams field converts back to Pounds the same way.
- Use the reference table for the values that come up most often.
Pounds to Grams formula
The factor from pounds to grams is 453.59237.
g = lb × 453.59237
Why this factor: the pound and the gram are both defined against the kilogram, so dividing one definition by the other gives 453.59237 directly. Both definitions are set out in full below.
To go the other way, divide by 453.59237 — or use the Grams to Pounds converter, which is the same calculation reversed.
Worked example
Take 150 lb and multiply by the factor 453.59237: the result is 68038.8555 g.
150 lb × 453.59237 = 68038.8555 g
The converter above does this for any value you type, in either direction.
What is a pound?
The pound is the primary unit of weight in the United States.
Definition: Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.
Where it is used: Body weight, grocery and produce pricing, shipping rates, and gym weights in the US.
Worth knowing: This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
What is a gram?
A gram is one thousandth of a kilogram, the everyday unit for food and small-object mass.
Definition: Exactly 0.001 kilogram by SI prefix definition.
Where it is used: Nutrition labels, recipes, postal rates, and laboratory weighing.
Pounds vs Grams
The pound is an imperial unit while the gram is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many grams are in a pound?
One pound equals 453.59237 grams.
What is the formula to convert pounds to grams?
Multiply the number of pounds by 453.59237. To reverse it, divide by 453.59237 instead.
How do I convert grams back to pounds?
Divide by 453.59237, which is the same as multiplying by 0.00220462262.
How many grams are in 10 pounds?
10 lb works out to 4535.9237 g.
Is there anything to watch out for with pounds?
This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
How is the pound defined?
Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.