Microgram to Milligram Converter (µg ↔ mg)
Convert between kilograms, grams, milligrams, micrograms, nanograms and picograms without factor-of-1000 slips.
Converted mass
Working
About this tool
Convert any mass between kg, g, mg, µg, ng and pg. The table shows every unit at once, so you can check a value against a label, certificate or protocol that uses a different prefix.
How to use it
- Enter the mass.
- Choose its unit.
- Read or copy the value in any other unit.
Formula f(x)
Each step between adjacent prefixes is a factor of 1000:
1 g = 1000 mg = 1 000 000 µg and 1 mg = 1000 µg = 1 000 000 ng.
Worked example check your setup
250 µg ÷ 1000 = 0.25 mg. 0.25 mg ÷ 1000 = 0.00025 g (2.5 × 10−4 g).