Convert Gram to Microgram (g → µg)
The gram is the everyday metric unit for cooking ingredients, postage, and small product weights worldwide.
Gram to Microgram Conversion Table
10 common values| Gram | Microgram |
|---|---|
| 1 g | 1,000,000 µg |
| 5 g | 5,000,000 µg |
| 10 g | 10,000,000 µg |
| 25 g | 25,000,000 µg |
| 50 g | 50,000,000 µg |
| 100 g | 100,000,000 µg |
| 250 g | 250,000,000 µg |
| 500 g | 500,000,000 µg |
| 1,000 g | 1,000,000,000 µg |
| 5,000 g | 5,000,000,000 µg |
How to Convert Gram to Microgram Manually
Step by StepConverting grams to micrograms is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in gramsStart with the number of grams (g) you want to convert.
- 2Multiply by 1,000,000The conversion factor from g to µg is 1,000,000. Multiply your value by this number.
- 3Read the result in microgramsThe result is your value in micrograms (µg).
Formula
Multiply the value in grams by 1,000,000. For the reverse direction, multiply by 0.000001.
µg = g × 1,000,000g = µg × 0.000001Tips
Use these in everyday conversions- 1 kitchen tablespoon of water weighs about 15 g, but 1 tablespoon of flour is only 8 g — density varies.
- A kitchen scale reads to 1 g; a jewellery scale to 0.01 g.
- Gold is priced by gram in Europe and per troy ounce in international markets.
Common Mistakes
Avoid these- Assuming a tablespoon of any ingredient equals 15 g — true only for water.
- Confusing g (gram) with mg (milligram) on medication labels.
- Using 28 g instead of 28.35 g when converting an ounce in precision baking.
About Gram and Microgram
What is the Gram?
The gram equals one thousandth of a kilogram (0.001 kg) and is the everyday metric unit for cooking ingredients, postage, jewelry, pharmaceuticals, and small product weights. Originally defined in 1795 as 'the absolute weight of a volume of pure water equal to a cube of one hundredth of a meter at the temperature of melting ice,' the gram is now formally defined via the kilogram. It relates simply to the milligram (1,000 mg = 1 g) and the kilogram (1,000 g = 1 kg). European nutrition labels universally use grams for ingredient quantities, and recipes worldwide outside North America measure ingredients by mass in grams rather than by volume. Gold and silver are traded in grams for small quantities, while gemstones use carats (0.2 g = 1 carat). A standard paper clip weighs about 1 g.
- European cooking and baking recipes
- Over-the-counter medication dosages
- Gold, silver and gemstone retail (per gram pricing)
A chicken egg weighs about 60 g. A standard bar of chocolate is 100 g. A euro coin weighs 7.5 g.
What is the Microgram?
The microgram equals one millionth of a gram (10⁻⁶ g) and is the standard unit for very small mass measurements in pharmacology, environmental science, and trace-element nutrition. The Greek letter µ (mu) represents the SI prefix 'micro' (one millionth). Vitamin B12 daily intake is around 2.4 µg, and the lethal dose of botulinum toxin is in the nanogram-to-microgram range, making it one of the most potent biological substances known. The microgram is critical in air-quality monitoring (PM concentrations in µg/m³), trace-mineral supplements (selenium, iodine), and pharmaceutical compounding. It relates to the milligram (1,000 µg = 1 mg) and the nanogram (1,000 ng = 1 µg). Environmental regulators set legal limits on heavy metals (lead, arsenic) in drinking water in micrograms per liter.
- Vitamin D, A and K dosing
- Trace metal content in food and water
- Hormone replacement therapy dosing
Vitamin D adult dose: 15–20 µg/day. Selenium RDA: 55 µg/day. Many thyroid medications are dosed in µg.