Convert Grains to Pounds
Convert Grains (gr) to Pounds (lb) instantly and accurately.
Conversion Formula
lb = gr × 0.0001428571429
About Grains
A grain (gr) is the smallest unit in both the avoirdupois and troy weight systems, equal to exactly 64.79891 milligrams. Originally defined as the mass of a single grain of barley or wheat from the middle of an ear, it has been a standard of weight since ancient times. Today, grains are used to weigh gunpowder charges and bullets (a standard .308 rifle bullet weighs 168 gr), pharmaceutical preparations in apothecary compounding, and the fineness of gold alloys. Arrowhead and fishing hook weights are also specified in grains.
About Pounds
The avoirdupois pound (lb) is the primary unit of weight in the United States and United Kingdom for everyday use, equal to 16 ounces or exactly 453.59237 grams. It dominates American life: body weight, grocery produce, deli counter cuts, freight shipping costs, gym weights, and building material quantities are all measured in pounds and ounces. American recipes use pounds for meat and large quantities. The pound derives from the Roman 'libra pondo' (a pound by weight) - hence both the symbol 'lb' (from libra) and the British currency symbol '£'.
Quick Reference Table
| Grains (gr) | Pounds (lb) |
|---|---|
| 1 gr | 0.000142857 lb |
| 2 gr | 0.000285714 lb |
| 5 gr | 0.000714286 lb |
| 10 gr | 0.00142857 lb |
| 25 gr | 0.00357143 lb |
| 50 gr | 0.00714286 lb |
| 100 gr | 0.0142857 lb |