Microgram to Grain Converter
Weight · unit-converter
Convert Microgram to Grain with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Microgram (ug)
To: Grain (gr)
About Microgram
The microgram is one millionth of a gram. It appears in pharmacology and trace analysis.
About Grain
The grain is 1/7000 of a pound (exactly 64.79891 mg). It is used in ballistics, pharmacy, and precious-metal contexts.
How to convert micrograms to grains
1 microgram is equal to 0.00001543235835 grain:
1 ug = (0.000001 g ÷ 0.06479891 g) gr = 0.00001543235835 gr
Each microgram is defined as 0.000001 g and each grain as 0.06479891 g, so one ug equals 0.000001 ÷ 0.06479891 gr = 0.00001543235835 gr.
Let w(ug) be the numeric value of the same mass measured in Microgram (ug), and w(gr) the value in Grain (gr). Then:
w(gr) = w(ug) × (0.000001 / 0.06479891)
Equivalently, divide by how many ug fit into one gr (grams per gr divided by grams per ug):
w(gr) = w(ug) ÷ 64798.91000000000349
Or: grain = microgram ÷ 64798.91000000000349
Examples
Example #1: Convert 20 ug to grain
20 ug = 20 ug × (0.000001/0.06479891) gr = 0.0003086472 gr
20 ug = 20 ug ÷ 64798.91000000000349 = 0.0003086472 gr
Example #2: Convert 50 ug to grain
50 ug = 50 ug × (0.000001/0.06479891) gr = 0.0007716179 gr
50 ug = 50 ug ÷ 64798.91000000000349 = 0.0007716179 gr
Summary
To convert Microgram to Grain, multiply the value in ug by the ratio of grams per ug divided by grams per gr. Equivalently: value_gr = value_ug × (0.000001 / 0.06479891). Numerically, 1 ug equals 0.00001543235835294143 gr.
Relationship context
You are converting between metric (SI) (Micrograms) and imperial / UK (stone, long ton, pound, ounce) (Grains). Metric mass is decimal from the gram; US and imperial masses use pounds and ounces with fixed definitions relative to the kilogram. The numeric factor used here is 1.543236e-5.
Conversion tables
| Microgram (ug) | Grain (gr) |
|---|---|
| 0.1 | 0.0000015432 |
| 1 | 0.0000154324 |
| 2 | 0.0000308647 |
| 3 | 0.0000462971 |
| 4 | 0.0000617294 |
| 5 | 0.0000771618 |
| 6 | 0.0000925942 |
| 7 | 0.0001080265 |
| 8 | 0.0001234589 |
| 9 | 0.0001388912 |
| Microgram (ug) | Grain (gr) |
|---|---|
| 10 | 0.0001543236 |
| 20 | 0.0003086472 |
| 30 | 0.0004629708 |
| 40 | 0.0006172943 |
| 50 | 0.0007716179 |
| 60 | 0.0009259415 |
| 70 | 0.0010802651 |
| 80 | 0.0012345887 |
| 90 | 0.0013889123 |
| 100 | 0.0015432358 |