How Many Micrograms in a Gram?
1,000,000 mcg
There are 1,000,000 micrograms in 1 gram.
Exact: 1 g = 1,000,000 mcg
Grams to Micrograms conversion chart
| Grams | Micrograms |
|---|---|
| 1 g | 1,000,000 |
| 2 g | 2,000,000 |
| 5 g | 5,000,000 |
| 10 g | 10,000,000 |
| 15 g | 15,000,000 |
| 20 g | 20,000,000 |
| 25 g | 25,000,000 |
| 28 g | 28,000,000 |
| 30 g | 30,000,000 |
| 40 g | 40,000,000 |
| 50 g | 50,000,000 |
| 60 g | 60,000,000 |
| 75 g | 75,000,000 |
| 100 g | 100,000,000 |
| 113 g | 113,000,000 |
| 125 g | 125,000,000 |
| 150 g | 150,000,000 |
| 200 g | 200,000,000 |
| 227 g | 227,000,000 |
| 250 g | 250,000,000 |
| 300 g | 300,000,000 |
| 400 g | 400,000,000 |
| 454 g | 454,000,000 |
| 500 g | 500,000,000 |
| 750 g | 750,000,000 |
| 1,000 g | 1,000,000,000 |
How to convert grams to micrograms
micrograms = grams × 1,000,000
Example: 250 g × 1,000,000 = 250,000,000 mcg.
Multiply the grams by 1,000,000. By hand, move the decimal point six places to the right, writing zeros wherever the number runs out of digits.
Amounts worth measuring in micrograms are tiny, so the gram figure usually starts with zeros. 0.002 g is 2,000 mcg, and 0.00015 g is 150 mcg.
Each extra zero after the decimal point divides the result by ten:
- 0.1 g is 100,000 mcg
- 0.01 g is 10,000 mcg
- 0.001 g is 1,000 mcg
- 0.0001 g is 100 mcg
Counting six places is where mistakes creep in. A safer route is two jumps of three: grams to milligrams (× 1,000), then milligrams to micrograms (× 1,000). 0.0045 g becomes 4.5 mg and then 4,500 mcg; the grams to milligrams page covers the first jump.
What is the difference between mcg and µg?
There is none: both are symbols for the microgram. The SI symbol uses the Greek letter µ (mu) for the prefix micro, which NIST's table of metric prefixes lists as one millionth. "mcg" writes the same prefix with plain letters.
US labels lean on the plain-letter form. The FDA's Daily Value table for Nutrition and Supplement Facts labels writes vitamin D and iodine amounts in mcg.
Handwriting is the weak spot. A µ that looks like an m turns micrograms into milligrams, which is a thousandfold jump.
Grams and micrograms: questions
How many micrograms are in a milligram?
There are 1,000 micrograms in a milligram. A gram holds 1,000 milligrams, and each of those splits into another thousand micrograms, which is where the six zeros come from. So 5 mg is 5,000 mcg.
How many micrograms is 0.2 g?
0.2 g is 200,000 mcg, two hundred thousand micrograms. Figures that large are easier to read one step up, in milligrams, where the same amount is 200 mg. Move one place further to 0.02 g, and the answer drops to 20,000 mcg.
Is mcg bigger than mg?
No, a microgram is a thousand times smaller than a milligram. 1 mcg is 0.001 mg, and even 250 mcg is only 0.25 mg. When a label switches from mg to mcg, the numbers get bigger while the amounts get smaller.
How do you turn micrograms back into grams?
Divide by 1,000,000, or move the decimal point six places to the left. 350 mcg is 0.00035 g, a figure with three zeros after the point. The micrograms to grams converter does it for any amount.
How many micrograms are in a kilogram?
A kilogram is 1,000,000,000 mcg, a billion micrograms. That is why large weights are not written this way: micrograms suit trace amounts, while kilograms suit sacks, luggage and body weight. The grams to kilograms page covers the other end of the scale.
Related conversions
Sources: Unit definitions: NIST Handbook 44 · Last reviewed · Report an error
https://howmanyounces.com/grams-to-micrograms/