mg to IU Converter (HGH).
Somatropin milligrams ↔ international units.
How it works.
Pick a direction
Choose mg → IU or IU → mg and enter your amount. The default assumes somatropin (HGH).
Confirm the ratio
The WHO somatropin standard is 3 IU per mg. Change the ratio only if your specific product states a different one.
Remember IU ≠ mass
IU measures biological activity, so a mg↔IU factor is compound-specific. This tool is for somatropin unless you change the ratio; it does not transfer to other peptides.
FAQ.
What is the mg to IU ratio for HGH?
The WHO 3rd International Standard for somatropin is 3 IU per 1 mg, so 1 mg ≈ 3 IU and 1 IU ≈ 0.333 mg. The ratio is editable in case your product cites a different standard.
Can I use this for other peptides?
Only if you know that compound's specific IU-per-mg activity and enter it as the ratio. IU is a unit of biological activity, not mass, so there's no universal mg↔IU factor across different peptides.
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