MCG to MG Converter

Instantly convert between micrograms (mcg) and milligrams (mg). Essential for accurate peptide dosing.

0.250mg
250mcg

Quick Reference

mcg
50
mg
0.05
mcg
100
mg
0.1
mcg
250
mg
0.25
mcg
500
mg
0.5
mcg
1000
mg
1.0

How to Convert

MCG to MG: Divide by 1,000. Example: 250 mcg ÷ 1,000 = 0.25 mg

MG to MCG: Multiply by 1,000. Example: 0.5 mg × 1,000 = 500 mcg

This matters for peptide dosing because some protocols list doses in mcg while vials are labeled in mg. Getting the conversion wrong means getting 1,000x too much or too little peptide.

Need to calculate a full peptide dose? Use our reconstitution calculator →