Grams to Grains Converter
Common Conversions
| g | gr |
|---|---|
| 0.01 | 0.154 |
| 0.065 | 1.003 |
| 0.1 | 1.543 |
| 0.325 | 5.016 |
| 0.5 | 7.716 |
| 1 | 15.432 |
| 2 | 30.865 |
| 5 | 77.162 |
| 10 | 154.324 |
| 28.35 | 437.5 |
| 100 | 1543.24 |
Why this conversion matters in chemistry
One gram is 15.4324 grains, exact through the international yard and pound agreement. The conversion comes up in two distinct contexts: legacy pharmacy and propellant chemistry. Translating a 0.325 g aspirin dose into the historical 5-grain notation is one direction; converting a 0.65 g detonator charge into the 10 grains a US ordnance specification might list is another. The grain is a small unit, so any practical chemistry mass becomes a large number of grains — useful when matching to legacy specifications, almost never natural for new work.
Formula
Worked Examples
One gram on the apothecary scale — the conversion's calibration anchor.
About one grain — useful as a sanity check that the apothecary unit really is that small.
An aspirin tablet — the modern 325 mg dose, originally specified as 5 grains.
Half a gram of reagent expressed in grains — useful as a magnitude reference.