Grains to Micrograms Converter

Summary

Convert grains to micrograms (and back) instantly using the exact factor 1 gr = 64,798.91 µg.

How it works

1. Enter a value in grains or micrograms into the corresponding input field.
2. The converter multiplies grains by 64,798.91 to produce micrograms.
3. For the reverse, it divides micrograms by 64,798.91 to produce grains.
4. Results update as you type — no button press needed.
5. Copy any result with the Copy button next to the output field.
6. Scroll down for a pre-built reference table of common grain values.

Use cases

• Pharmacy: convert grain-based drug doses (e.g., aspirin, thyroid medication) to micrograms.
• Ballistics: cross-check bullet or powder weights expressed in grains against metric specs.
• Precious metals: convert troy-grain weights to microgram precision for assay work.
• Laboratory: verify legacy grain measurements in modern microgram-based protocols.
• Education: demonstrate unit conversion between imperial and SI mass systems.
• Nutrition: convert grain-weight supplement doses to microgram values on labels.

Frequently Asked Questions