Mass conversion

5 units, with g as the base. Every value in the factor table is the number you multiply by, so reading across a row converts out of that unit and reading down a column converts into it.

Factor table

Mass conversion factors. Each cell is the value to multiply the row unit by to get the column unit.
from \ to	ng	µg	mg	g	kg
ng	1	0.001	1 × 10⁻⁶	1 × 10⁻⁹	1 × 10⁻¹²
µg	1000	1	0.001	1 × 10⁻⁶	1 × 10⁻⁹
mg	1 × 10⁶	1000	1	0.001	1 × 10⁻⁶
g	1 × 10⁹	1 × 10⁶	1000	1	0.001
kg	1 × 10¹²	1 × 10⁹	1 × 10⁶	1000	1

Prefixes such as milli, micro and kilo follow the SI prefixes table.

Common conversions

mg to g

1 mg = 0.001 g. In reverse, 1 g = 1000 mg.

mg to g
mg	g
1	0.001
5	0.005
10	0.01
50	0.05
100	0.1
500	0.5

µg to mg

1 µg = 0.001 mg. In reverse, 1 mg = 1000 µg.

µg to mg
µg	mg
1	0.001
5	0.005
10	0.01
50	0.05
100	0.1
500	0.5

Worked example

1 mg in g
= 1 × 0.001
= 0.001 g

Convert a number

The table gives the factor; the unit converter does the arithmetic, remembers the units you picked, and turns any conversion into a link you can share.