Micrograms to Grains (µg to gr) Converter

How to convert micrograms to grains

Formulagr = µg × 0.00001543235835

Multiply the value in micrograms by 0.00001543235835. To go the other way, multiply by 64,798.91 (or divide by 0.00001543235835).

A microgram is smaller than a grain: it takes 64,798.91 micrograms to make one grain.

Worked examples

1 microgram1 µg × 0.00001543235835 = 0.00001543235835 gr
5 micrograms5 µg × 0.00001543235835 = 0.00007716179176 gr
10 micrograms10 µg × 0.00001543235835 = 0.0001543235835 gr
20 micrograms20 µg × 0.00001543235835 = 0.0003086471671 gr
100 micrograms100 µg × 0.00001543235835 = 0.001543235835 gr

Micrograms to grains conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Micrograms to grains: 0.1–10 µg
Micrograms (µg)	Grains (gr)
0.1 µg	0.0000015432358 gr
0.25 µg	0.0000038580896 gr
0.5 µg	0.0000077161792 gr
1 µg	0.000015432358 gr
2 µg	0.000030864717 gr
3 µg	0.000046297075 gr
4 µg	0.000061729433 gr
5 µg	0.000077161792 gr
6 µg	0.00009259415 gr
7 µg	0.00010802651 gr
8 µg	0.00012345887 gr
9 µg	0.00013889123 gr
10 µg	0.00015432358 gr

Micrograms to grains: 12–1,000 µg
Micrograms (µg)	Grains (gr)
12 µg	0.0001851883 gr
15 µg	0.00023148538 gr
20 µg	0.00030864717 gr
25 µg	0.00038580896 gr
30 µg	0.00046297075 gr
40 µg	0.00061729433 gr
50 µg	0.00077161792 gr
75 µg	0.0011574269 gr
100 µg	0.0015432358 gr
250 µg	0.0038580896 gr
500 µg	0.0077161792 gr
1,000 µg	0.015432358 gr

About the units

Microgram (µg)

One millionth of a gram, often written “mcg” on supplement labels to avoid confusion with mg. One microgram equals 1×10⁻⁹ kilograms (kg).

Grain (gr)

Exactly 64.79891 mg; 7,000 grains make a pound. Used for bullets, arrows and some medicines. One grain equals 0.00006479891 kilograms (kg).

Frequently asked questions

How many grains are in one microgram?

There are 0.00001543235835 grains in one microgram, and this value is exact by definition.

How do I convert micrograms to grains?

Multiply the number of micrograms by 0.00001543235835. For example, 10 µg × 0.00001543235835 = 0.0001543235835 gr.

How many micrograms are in one grain?

One grain equals 64,798.91 micrograms. That is the reverse factor, 1 ÷ 0.00001543235835.

What is 10 micrograms in grains?

10 µg = 0.0001543235835 gr.

Is this µg to gr converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Micrograms to Grains Converter