🩺 Micrograms to Milligrams Converter
Switch between micrograms and milligrams seamlessly for medication dosing, lab prep, and nutrition tracking.
Micrograms and milligrams are both metric mass units separated by a factor of 1,000. Enter a value in either unit to see immediate conversions plus gram and kilogram equivalents.
Common in pharmaceutical labels and dietary supplements.
Enter milligrams to view the equivalent microgram dosage.
Grams (g)
0.01
Kilograms (kg)
0
How to Use This Calculator
Enter the known dosage
Type the quantity you have in micrograms or milligrams.
Confirm the converted value
The other field updates instantly, using the exact metric conversion factor (1 mg = 1,000 µg).
Check larger units if needed
Review grams and kilograms for batch preparations or regulatory reporting.
Formula
Milligrams = Micrograms ÷ 1,000
Micrograms = Milligrams × 1,000
Metric mass units scale by powers of ten—allowing exact conversions without rounding.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Micrograms and milligrams are central to pharmacology, supplement formulation, and laboratory chemistry. Because patient safety often hinges on accurate microgram dosing, automated conversions help eliminate transcription errors and streamline double-checks.
The converter also outputs gram and kilogram equivalents, which are useful when preparing stock solutions, scaling formulations, or communicating with manufacturing partners that operate in larger units.
Use this tool alongside the mg to mL Calculator or Weight Converter when your workflow spans both mass and volume units.
Frequently Asked Questions
Is the conversion exact?
Yes. The relationship between micrograms and milligrams is exactly 1,000:1 in the metric system.
Can I enter decimal micrograms?
Absolutely. The calculator accepts decimal inputs for precise laboratory calculations or compounded medications.
What about IU (International Units)?
International Units depend on the specific substance and cannot be directly converted using mass alone. Consult medical guidelines for IU conversions.
Does this support troy ounces or grains?
For specialised mass units, use the Weight Converter which includes additional conversions beyond metric and avoirdupois units.