Convert pounds to grams (lb to g)
To convert pounds to grams, multiply the value in pounds by 453.59237. It is handy for American and British recipes, coffee beans, meat and parcel weights given in pounds. This pounds to grams converter works both ways: type pounds or grams into either box above and the other box, the worked formula and the chart below update as you type.
The pound (lb) is defined as exactly 0.45359237 kilograms by the 1959 international agreement. Its abbreviation comes from the Roman libra. Pounds are used for body weight in the US and, alongside stones, in the UK, and for groceries, gym weights and parcels in the US. One pound is 453.592 grams.
The gram (g) is one thousandth of a kilogram. When the metric system was created in the 1790s it was defined as the mass of one cubic centimeter of water. Going the other way, one gram equals 0.00220462 pounds. Grams are used for food labels and recipes, nutrition facts, postage, jewelry and medicine doses around the world.
How to convert pounds to grams with this tool
- Type a number into the Pounds (lb) box — it starts at 1 lb as an example.
- Read the answer in the Grams (g) box and in the result panel, which also shows the formula with your number.
- To go the other way, type into the grams box, or press the swap button to open the Grams to Pounds converter with your value carried over.
- Choose how many decimal places you want, or tap a quick value such as 0.25 lb, 0.5 lb, 2 lb.
- Press Copy result to paste the conversion into a message, spreadsheet or note.
Pounds to Grams converter features
Converts both ways
Type in the pounds box to get grams, or in the grams box to get pounds. The other box follows instantly.
Exact factor
Calculations use 1 lb = 453.59237 g, and rounding is applied only to the answer you see — choose Auto or 0–10 decimal places.
Formula with your number
The working is shown under the result, for example 1 lb × 453.59237 = 453.5924 g, so you can check it or copy the method.
Quick values and chart
Tap common values like 0.25 lb, 0.5 lb, 2 lb, or read the pounds-to-grams table further down this page.
Pounds to Grams formula
The formula is g = lb × 453.59237. It is exact because one pound is exactly 453.59237 grams.
The reverse formula is lb = g ÷ 453.59237 — or use the Grams to Pounds converter. Three worked examples:
- One pound: 1 lb × 453.59237 = 453.5924 g
- A quarter-pound burger patty: 0.25 lb × 453.59237 = 113.3981 g
- A 2.5 lb bag of flour: 2.5 lb × 453.59237 = 1,133.9809 g
Pounds to Grams quick reference
The values people look up most often, worked out with the exact factor:
- 1 lb = 453.592 g
- 1 g = 0.00220462 lb
- 0.25 lb = 113.3981 g
- 0.5 lb = 226.7962 g
- 2 lb = 907.1847 g
- 5 lb = 2,267.9619 g
Quick tip: Multiply by 450 for a close mental estimate (0.8% low): 2 lb ≈ 900 g, versus the exact 907.1847 g.
Related conversions: LBS to KG, Ounces to Grams and the full weight converter.
Pounds to Grams conversion table
Values in grams are rounded to 4 decimal places (more for very small numbers). For any value not listed, type it into the converter above.
| lb | g | lb | g |
|---|---|---|---|
| 0.1 | 45.3592 | 4 | 1,814.3695 |
| 0.125 | 56.699 | 4.5 | 2,041.1657 |
| 0.25 | 113.3981 | 5 | 2,267.9619 |
| 0.5 | 226.7962 | 6 | 2,721.5542 |
| 0.75 | 340.1943 | 7 | 3,175.1466 |
| 1 | 453.5924 | 8 | 3,628.739 |
| 1.25 | 566.9905 | 9 | 4,082.3313 |
| 1.5 | 680.3886 | 10 | 4,535.9237 |
| 1.75 | 793.7866 | 15 | 6,803.8856 |
| 2 | 907.1847 | 20 | 9,071.8474 |
| 2.5 | 1,133.9809 | 25 | 11,339.8093 |
| 3 | 1,360.7771 | 50 | 22,679.6185 |
| 3.5 | 1,587.5733 | 100 | 45,359.237 |
Pounds to Grams FAQ
How many grams is 0.5 lb?
0.5 pounds is 226.7962 grams: 0.5 lb × 453.59237 = 226.7962 g.
How do I convert pounds to grams?
Multiply the value in pounds by 453.59237. For example, 5 lb × 453.59237 = 2,267.9619 g. To convert back, divide the value in grams by 453.59237 — or use the Grams to Pounds converter.
How many pounds are in one gram?
One gram is 0.002205 pounds, because 1 g ÷ 453.59237 = 0.002205 lb.
What is 5 pounds in grams?
How many grams is a quarter pound?
A quarter pound is 113.3981 g — usually rounded to 113 g on food labels.