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Convert grains (gr) to grams (g) and grams to grains instantly. Uses the standard avoirdupois grain—common for ammunition, archery, and apothecary-style small weights.
Last updated: April 8, 2026
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Grains
7,000 gr
Grams
453.59237 g
Milligrams
453,592.37 mg
Quick facts
Formula
g = gr × 0.06479891
Formula
gr = g ÷ 0.06479891
Reference
7,000 gr = 1 lb
55 grains (common bullet weight class):
Input
55 gr
Result
3.56394 g
The grain is a small unit of mass in the US customary and British systems. One avoirdupois grain is exactly 1/7000 of an avoirdupois pound. With the international pound defined as 453.59237 grams, one grain is exactly 0.06479891 grams. This page multiplies or divides by that factor for quick metric equivalents.
grams = grains × 0.06479891grains = grams ÷ 0.06479891milligrams = grams × 1,000For gold or silver in troy ounces, use a troy-based converter; grains here follow avoirdupois mass.
| gr | Grams (exact) |
|---|---|
| 1 | 0.06479891 |
| 100 | 6.479891 |
| 150 | 9.7198365 |
| 7,000 | 453.59237 |
| 14,000 | 907.18474 |
Need full unit lists? Try our weight converter.
Get Custom Calculator for Your PlatformResult: 180 gr = 11.6638038 g
Result: 5 g ≈ 77.162 gr
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