mcg to Grams Converter

How to convert micrograms to grams

Formulag = µg × 0.000001

Multiply the value in micrograms by 0.000001. To go the other way, multiply by 1,000,000 (or divide by 0.000001).

A microgram is smaller than a gram: it takes 1,000,000 micrograms to make one gram.

Worked examples

1 microgram1 µg × 0.000001 = 0.000001 g
5 micrograms5 µg × 0.000001 = 0.000005 g
10 micrograms10 µg × 0.000001 = 0.00001 g
20 micrograms20 µg × 0.000001 = 0.00002 g
100 micrograms100 µg × 0.000001 = 0.0001 g

Micrograms to grams conversion table

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

Micrograms to grams: 0.1–10 µg
Micrograms (µg)	Grams (g)
0.1 µg	1×10⁻⁷ g
0.25 µg	2.5×10⁻⁷ g
0.5 µg	5×10⁻⁷ g
1 µg	0.000001 g
2 µg	0.000002 g
3 µg	0.000003 g
4 µg	0.000004 g
5 µg	0.000005 g
6 µg	0.000006 g
7 µg	0.000007 g
8 µg	0.000008 g
9 µg	0.000009 g
10 µg	0.00001 g

Micrograms to grams: 12–1,000 µg
Micrograms (µg)	Grams (g)
12 µg	0.000012 g
15 µg	0.000015 g
20 µg	0.00002 g
25 µg	0.000025 g
30 µg	0.00003 g
40 µg	0.00004 g
50 µg	0.00005 g
75 µg	0.000075 g
100 µg	0.0001 g
250 µg	0.00025 g
500 µg	0.0005 g
1,000 µg	0.001 g

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).

Gram (g)

One thousandth of a kilogram. Recipes, nutrition labels and postal scales use grams; a US nickel weighs 5 g. One gram equals 0.001 kilograms (kg).

Frequently asked questions

How many grams are in one microgram?

There are 0.000001 grams in one microgram, and this value is exact by definition.

How do I convert micrograms to grams?

Multiply the number of micrograms by 0.000001. For example, 10 µg × 0.000001 = 0.00001 g.

How many micrograms are in one gram?

One gram equals 1,000,000 micrograms. That is the reverse factor, 1 ÷ 0.000001.

What is 10 micrograms in grams?

10 µg = 0.00001 g.

Is this µg to g 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.