Guide

mg vs mcg vs IU.

Understand common peptide-related units and where conversions can break.

Short answer

mg and mcg are mass units, while IU is a biological activity unit that cannot be universally converted without substance-specific information.

Step-by-step

  1. Use 1 mg = 1000 mcg for mass conversion.
  2. Use 1 mL = 1000 uL for volume conversion.
  3. Do not convert IU unless the specific validated conversion is known.
  4. Check whether your protocol uses mass, volume, concentration, or activity.
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Is this guide medical advice?

No. CalcPeptides guides explain arithmetic and terminology for education and research planning only.

Should calculator results be independently checked?

Yes. Always verify calculator results against validated protocols, labels, certificates of analysis, and qualified professional review.