Convert Grams to Micrograms
1 gram (g) equals 1000000 micrograms (µg).
1 g = 1000000 µg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gram to microgram converter to paste a column from Excel.
How to Convert Gram to Microgram
- 1 g = 1000000 µg
- 1 µg = 0.000001 g
- Example: convert 15 g to µg: 15 g = 15 × 1000000 µg = 15000000 µg
Formula
µg = g × 1000000
Derivation from SI units:
- 1 g = 10⁻³ kg
- 1 µg = 10⁻⁹ kg = 10⁻³ mg
- 1 g = 0.001 kg ÷ 1 × 10⁻⁹ kg per µg = 1000000 µg
Both units are defined exactly, so the factor is exact. Gram definition: gram; Microgram definition: microgram.
Worked examples
- A reading of 25 g converts to 25000000 µg.
25 g × 1000000 = 25000000 µg - A value of 150 g is 150000000 µg.
150 g × 1000000 = 150000000 µg
Gram to Microgram conversion table
| Grams (g) | Micrograms (µg) |
|---|---|
| 0.1 g | 100000 µg |
| 0.5 g | 500000 µg |
| 1 g | 1000000 µg |
| 2 g | 2000000 µg |
| 5 g | 5000000 µg |
| 10 g | 10000000 µg |
| 14 g | 14000000 µg |
| 20 g | 20000000 µg |
| 25 g | 25000000 µg |
| 28.35 g | 28350000 µg |
| 30 g | 30000000 µg |
| 50 g | 50000000 µg |
| 75 g | 75000000 µg |
| 100 g | 100000000 µg |
| 113 g | 113000000 µg |
| 125 g | 125000000 µg |
| 150 g | 150000000 µg |
| 200 g | 200000000 µg |
| 250 g | 250000000 µg |
| 300 g | 300000000 µg |
| 454 g | 454000000 µg |
| 500 g | 500000000 µg |
| 750 g | 750000000 µg |
| 1000 g | 1000000000 µg |
Where it's used
Grams are used for recipes and nutrition labels, while micrograms appear in vitamins and trace nutrients (vitamin D, B12, folate). Both measure mass (commonly called weight), so the conversion is a fixed factor.
Gram to other weight and mass units
| Conversion | 1 g equals |
|---|---|
| gram to kilogram | 0.001 kg |
| gram to milligram | 1000 mg |
| gram to microgram | 1000000 µg |
| gram to metric ton | 0.000001 t |
| gram to pound | 0.002204622622 lb |
| gram to ounce | 0.03527396195 oz |
| gram to stone | 0.0001574730444 st |
| gram to short ton | 0.000001102311311 ton (US) |
| gram to long ton | 9.842065276 × 10⁻⁷ ton (UK) |
| gram to grain | 15.43235835 gr |
| gram to troy ounce | 0.03215074657 oz t |
| gram to carat | 5 ct |
Frequently asked questions
How many micrograms are in 1 gram?
1 g = 1000000 µg.
How do I convert grams to micrograms?
Multiply the value in g by 1000000. For example, 15 g × 1000000 = 15000000 µg.
Is the g to µg conversion exact?
Yes. Both units are defined exactly, and 1 g is exactly 1000000 µg.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Grams to Micrograms. Retrieved October 17, 2026, from https://scientificconverters.com/mass/grams-to-micrograms/
IEEE
Scientific Converters, "Convert Grams to Micrograms," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/grams-to-micrograms/