Grams to micrograms – convert g to µg
Convert grams to micrograms (g to µg) when you need to express small quantities of a substance in very fine mass units. Ideal for medication doses, supplements, trace contaminants and lab work.
Open the interactive g → µg converter:
Use main converter (g → µg) or switch to µg → gThe mass converter also covers mg, kg, tonnes, ounces, pounds and stone for everyday weight conversions.
Quick reference: g to µg
One gram is exactly 1,000,000 micrograms. That means: µg = g × 1,000,000. Example values:
| Grams (g) | Micrograms (µg) |
|---|---|
| 0.0001 g | 100 µg |
| 0.001 g | 1,000 µg |
| 0.01 g | 10,000 µg |
| 0.05 g | 50,000 µg |
| 0.1 g | 100,000 µg |
| 0.5 g | 500,000 µg |
| 1 g | 1,000,000 µg |
Why convert grams to micrograms?
g to µg is useful when you:
- Calculate or check medication doses and supplement strengths.
- Work with trace amounts of chemicals or contaminants in lab results.
- Convert food or nutrition label values into finer units.
- Teach how mass scales from grams down through milligrams to micrograms.
Other mass converters on this site
All mass conversions on the homepage use exact SI relationships between g, mg, µg and kg, so you can safely move up and down the scale.
Page last updated: 4 December 2025.