Convert weight and mass units — kilograms, pounds, grams, ounces, tons, carats and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 μg | 1e-09 g | |
| 0.01 μg | 1e-08 g | |
| 0.1 μg | 1e-07 g | |
| 1 μg | 1e-06 g | |
| 5 μg | 5e-06 g | |
| 10 μg | 1e-05 g | |
| 50 μg | 5e-05 g | |
| 100 μg | 0.0001 g | |
| 1000 μg | 0.001 g |
The Milligram (mg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 μg = 0.000001 g
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Microgram (μg) | Gram (g) | Real-world context |
|---|---|---|
| 1 μg | 1.0000e-06 g | speck of dust |
| 1000 μg | 0.001 g | 1 milligram |
| 1,000,000 μg | 1 g | |
| 1.0000e+09 μg | 1000 g | |
| 1.0000e+12 μg | 1,000,000 g |
1 microgram (μg) equals exactly 1.0000e-06 grams (g). Use the formula: μg × 1.0000e-06 = g.
To convert micrograms to grams, multiply your value in micrograms by 1.0000e-06. For example, 5 μg × 1.0000e-06 = 5.0000e-06 g.
100 micrograms = 1.0000e-04 grams. Calculation: 100 × 1.0000e-06 = 1.0000e-04.
To convert grams back to micrograms, divide by 1.0000e-06 (or multiply by 1,000,000). Example: 10 g ÷ 1.0000e-06 = 10,000,000 μg.
Yes. This converter uses the internationally recognised exact conversion factor: 1 μg = 1.0000e-06 g. All calculations are performed in your browser with no rounding until display.
10 micrograms = 1.0000e-05 grams. Simply multiply by 1.0000e-06.
Converting micrograms to grams is commonly needed for medical dosing, laboratory measurements, pharmaceutical calculations, and quality control testing where one system uses μg and another uses g.
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.
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 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.
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.