Pounds to Grams Converter (lb to g)

One pound equals 453.59237 grams exactly. This is not a rounded value: the international avoirdupois pound is legally defined as 0.45359237 kilograms, so multiplying by 1000 gives exactly 453.59237 grams.

In 1959 the United States, the United Kingdom, Canada, Australia, New Zealand and South Africa signed the International Yard and Pound Agreement, fixing the pound at 0.45359237 kg. Before that, each country had a slightly different pound. The odd-looking number is the result of tying an old imperial unit to the metric kilogram.

Multiply the number of pounds by 453.59237. Formula: grams = pounds x 453.59237. Example: 2.5 lb x 453.59237 = 1133.980925 g. This tool does the multiplication for you and lets you set the decimal precision from 0 to 10.

Divide the number of grams by 453.59237. Formula: pounds = grams / 453.59237. Example: 1000 g / 453.59237 = 2.2046226218 lb. Type a value into the grams field above and the result appears instantly.

One gram equals 0.0022046226 lb (rounded to 10 decimals). The exact value is 1 / 453.59237. For quick estimates, remember that 454 g is a little more than 1 lb, so 1 g is a little more than 1/454 of a pound.

The pound is an imperial and US customary unit of mass. The gram is the metric (SI) unit. Modern definitions tie the pound to the kilogram, so converting between them is exact instead of an experimental measurement.

The everyday pound is the avoirdupois pound: 453.59237 g. The troy pound, used historically for precious metals, is 373.2417216 g. They are different units, so never mix them up when weighing gold or silver. This converter uses the avoirdupois pound, which is what pounds means in cooking, shipping and body weight.

Yes. Since the 1959 agreement both countries use the same international avoirdupois pound of 453.59237 g. The older imperial pound and the older US pound differed by a tiny amount, but that difference no longer exists in law.

One pound contains exactly 16 ounces, and one ounce is exactly 28.349523125 g. So 1 lb = 16 oz = 453.59237 g. If your starting unit is ounces, the ounces-to-grams converter or the ounces-to-pounds converter give you a dedicated two-way tool for those pairs.

Use this page when you convert pounds and grams specifically: it is tuned for that pair with a dedicated table, worked examples and precision control. If you need other units such as kilograms, stones, tonnes or cups, use the universal weight converter instead.

Use the precision selector above (0 to 10 decimals). For cooking, whole grams (0 decimals) are usually enough. For shipping labels, one decimal place in pounds is common. For science or calibration work, use 5 or more decimals so the result keeps the full 453.59237 constant.

Yes, for everyday use. Rounding 453.59237 g up to 454 g introduces an error of 0.40763 g, which is about 0.09 percent. That is fine for recipes, but use the exact 453.59237 for shipping costs, laboratory work or anything where small errors add up.

Multiply your weight in pounds by 453.59237 to get grams, then divide by 1000 for kilograms. Example: 150 lb x 453.59237 = 68038.8555 g = 68.0388555 kg. The secondary results under the converter show kilograms and ounces automatically.

Each row starts from a round number of pounds and shows the exact equivalent in grams, kilograms and ounces. Read left to right: for example, the row for 5 lb reads 2267.96185 g, 2.26796185 kg and 80 oz. Use it for quick lookups without typing.

The converter uses the exact legal definition, so a difference comes from the scale: uncalibrated sensors, a missing tare, rounding on the display, or the item not sitting still. Weigh the same item twice; if the two readings disagree, the scale needs calibration, not the math.

Multiply pounds by 450 for a fast estimate, or by 454 for a closer one. Example: 3 lb x 454 is about 1362 g, while the exact value is 1360.77711 g. The shortcut is within 0.2 percent, which is close enough for shopping or packing but not for trade.