What is a pounds to grams converter?
A pounds to grams converter is an online tool that changes a weight expressed in pounds (lb), an imperial and US customary unit, into grams (g), a metric unit. It also runs in reverse, turning grams back into pounds, so you can switch between the two systems whenever a recipe, label or specification uses the one you are less familiar with.
Pounds are common in the United States for larger everyday weights, while grams are the metric unit of choice for smaller masses worldwide — especially in cooking, nutrition labels and science. Converting between them is useful when scaling a recipe, comparing product weights or working with instructions written for a different measurement system.
How does it work?
The conversion combines two exact relationships: one pound equals 453.59237 grams (because one pound is 0.45359237 kilograms, and one kilogram is 1000 grams). To convert pounds to grams you multiply by 453.59237, and to convert grams to pounds you divide by it.
Since the factor is exact, the conversion adds no error of its own; the only rounding is whatever you apply to the final answer.
Formula
To convert pounds to grams, multiply the weight in pounds by 453.59237:
To convert grams to pounds, divide by the same factor:
Example conversions
Convert 2 pounds to grams
So 2 pounds is approximately 907.19 grams — a little over nine-tenths of a kilogram.
Convert 1000 grams to pounds
One thousand grams (one kilogram) is therefore about 2.205 pounds.
Conversion table
| Pounds (lb) | Grams (g) |
|---|---|
| 0.5 | 226.80 |
| 1 | 453.59 |
| 2 | 907.18 |
| 3 | 1360.78 |
| 5 | 2267.96 |
| 10 | 4535.92 |
Notes
- One pound is made up of 16 ounces, so if you are working in ounces you can also use our pounds to ounces converter.
- The pound here is the international avoirdupois pound; do not use this tool for the troy pound used to weigh precious metals.
- For a rough estimate, remember that 1 pound is roughly 450 grams, close to half a kilogram.
Frequently asked questions
How many grams are in a pound?
There are exactly 453.59237 grams in one avoirdupois pound, often rounded to 453.59 g or 454 g.
How do I convert pounds to grams quickly?
Multiply the number of pounds by about 454. For a rough figure you can multiply by 450 and add a little.
How many pounds is 1000 grams?
One thousand grams equals one kilogram, which is about 2.20462 pounds.
Why is one pound exactly 453.59237 grams?
The pound is defined as 0.45359237 kilograms, and one kilogram is 1000 grams, so multiplying gives exactly 453.59237 grams.