Thyroid Calculator

Use this calculator to convert between different forms and units of thyroid hormone. Common synthetic, pure and natural dessicated forms are listed. The last section of the table provides input fields for a specified ratio of T3 to T4, and will give the dosages required for both the synthetic and pure forms. All dosages given are based on the "Grains" field at the beginning of the table, but editing any field will automatically update the rest to keep them in sync.

Changelog:

• 13th March 2024: Removed the synthetic/pure distinction as it was confusing and unnecessary bloat. Improved display for mobile devices.