Convert weight and mass units — kilograms, pounds, grams, ounces, tons, carats and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 g | 1000 μg | |
| 0.01 g | 10000 μg | |
| 0.1 g | 100000 μg | |
| 1 g | 1e+06 μg | |
| 5 g | 5e+06 μg | |
| 10 g | 1e+07 μg | |
| 50 g | 5e+07 μg | |
| 100 g | 1e+08 μg | |
| 1000 g | 1e+09 μg |
The Milligram (mg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 g = 1000000 μg
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Gram (g) | Microgram (μg) | Real-world context |
|---|---|---|
| 1.0000e-06 g | 1 μg | |
| 0.001 g | 1000 μg | |
| 0.01 g | 10000 μg | |
| 0.1 g | 100000 μg | |
| 1 g | 1,000,000 μg | large paperclip |
1 gram (g) equals exactly 1,000,000 micrograms (μg). Use the formula: g × 1,000,000 = μg.
To convert grams to micrograms, multiply your value in grams by 1,000,000. For example, 5 g × 1,000,000 = 5,000,000 μg.
100 grams = 100,000,000 micrograms. Calculation: 100 × 1,000,000 = 100,000,000.
To convert micrograms back to grams, divide by 1,000,000 (or multiply by 1.0000e-06). Example: 10 μg ÷ 1,000,000 = 1.0000e-05 g.
Yes. This converter uses the internationally recognised exact conversion factor: 1 g = 1,000,000 μg. All calculations are performed in your browser with no rounding until display.
10 grams = 10,000,000 micrograms. Simply multiply by 1,000,000.
Converting grams to micrograms is commonly needed for medical dosing, laboratory measurements, pharmaceutical calculations, and quality control testing where one system uses g and another uses μg.
The gram (g) is a unit of mass in the metric system equal to one-thousandth of a kilogram (0.001 kg). While the kilogram is the SI base unit, the gram is the practical everyday unit for small masses in cooking, pharmacy, chemistry, and nutrition labelling. The word derives from Late Latin gramma (small weight), itself from Greek.
The microgram (μg, or mcg in medical writing) is a unit of mass equal to one-millionth of a gram (10⁻⁶ g) or one-billionth of a kilogram (10⁻⁹ kg). The symbol "μ" is the Greek letter mu, representing the SI micro- prefix. In clinical settings "mcg" is preferred over "μg" to avoid handwriting confusion between μ and m.
Defined in 1795 by the French Academy of Sciences as the mass of one cubic centimetre of pure water at 4 °C — this made 1 mL of water weigh almost exactly 1 gram. The gram was the practical base of early metric calculations before the kilogram took over as SI base unit in 1875. The relationship 1 mL water ≈ 1 g is still a useful approximation in cooking and chemistry.
Interesting fact: A standard large paperclip weighs about 1 gram. The gram forms the basis for milligram (mg), microgram (μg), and tonne (10⁶ g) through SI prefixes.
The microgram became essential in the 20th century as analytical chemistry techniques — mass spectrometry, HPLC, immunoassay — allowed measurement and manipulation at sub-milligram scales. Vitamins, hormones, and pharmaceuticals are often active at microgram levels. The discovery that iodine deficiency (corrected by just a few hundred micrograms daily) causes goitre and intellectual disability was a landmark 20th-century public health finding.
Interesting fact: The human daily requirement for vitamin B12 is only 2.4 μg, yet deficiency causes irreversible neurological damage. Vitamin D3 requirement is approximately 15 μg per day.