mcg to mg
To convert mcg to mg, divide by 1,000. 1,000 mcg is 1 mg, 500 mcg is 0.5 mg and 250 mcg is 0.25 mg. To go from mg to mcg, multiply by 1,000.
mcg to mg chart
| Micrograms | Milligrams |
|---|---|
| 10 mcg | 0.01 mg |
| 25 mcg | 0.025 mg |
| 50 mcg | 0.05 mg |
| 100 mcg | 0.1 mg |
| 125 mcg | 0.125 mg |
| 150 mcg | 0.15 mg |
| 200 mcg | 0.2 mg |
| 250 mcg | 0.25 mg |
| 300 mcg | 0.3 mg |
| 400 mcg | 0.4 mg |
| 500 mcg | 0.5 mg |
| 600 mcg | 0.6 mg |
| 750 mcg | 0.75 mg |
| 800 mcg | 0.8 mg |
| 1,000 mcg | 1 mg |
| 1,500 mcg | 1.5 mg |
| 2,000 mcg | 2 mg |
| 2,500 mcg | 2.5 mg |
| 5,000 mcg | 5 mg |
mcg in each syringe unit
How much one unit, and ten units, of a U-100 insulin syringe hold at each concentration.
| Concentration | In 1 unit | In 10 units |
|---|---|---|
| 1 mg/mL · 5 mg vial + 5 mL | 10 mcg | 100 mcg · 0.1 mg |
| 2 mg/mL · 10 mg vial + 5 mL | 20 mcg | 200 mcg · 0.2 mg |
| 2.5 mg/mL · 5 mg vial + 2 mL | 25 mcg | 250 mcg · 0.25 mg |
| 3 mg/mL · 15 mg vial + 5 mL | 30 mcg | 300 mcg · 0.3 mg |
| 5 mg/mL · 10 mg vial + 2 mL | 50 mcg | 500 mcg · 0.5 mg |
| 7.5 mg/mL · 15 mg vial + 2 mL | 75 mcg | 750 mcg · 0.75 mg |
| 10 mg/mL · 10 mg vial + 1 mL | 100 mcg | 1,000 mcg · 1 mg |
| 15 mg/mL · 30 mg vial + 2 mL | 150 mcg | 1,500 mcg · 1.5 mg |
| 20 mg/mL · 20 mg vial + 1 mL | 200 mcg | 2,000 mcg · 2 mg |
Calculator
The amount field is set to mcg. Switch it to mg at any time.
Enter the vial size and the water you added.
Arithmetic only. This tool does not recommend a dose; use the one your prescriber gave you.
Questions
How do I convert mcg to mg?
Divide by 1,000. 250 mcg is 0.25 mg and 500 mcg is 0.5 mg.
How do I convert mg to mcg?
Multiply by 1,000. 0.1 mg is 100 mcg and 2 mg is 2,000 mcg.
Is mcg the same as µg or ug?
Yes. mcg, µg and ug are all abbreviations for microgram, one millionth of a gram.
Why does mixing up mcg and mg matter?
The two differ by a factor of 1,000. Entering a mcg figure as mg, or the reverse, makes a result one thousand times too large or too small. Check which unit is written on the label and on the prescription before doing any arithmetic.
How many mcg are in one unit on a syringe?
Multiply the mg/mL of the vial by 10. At 5 mg/mL one unit on a U-100 syringe holds 50 mcg; at 2.5 mg/mL it holds 25 mcg.