Convert Scruples to Milligrams
Convert Scruples (s ap) to Milligrams (mg) instantly and accurately.
Conversion Formula
mg = s ap × 1295.9782
About Scruples
A scruple (s ap) is a unit of the apothecary weight system equal to 20 grains or approximately 1.296 grams. Derived from the Latin 'scrupulus' (a small sharp stone used as a counterweight), it was the basic dispensing unit in pre-metric pharmacy across Europe. The apothecary system divided the fluid ounce into 8 drams, each dram into 3 scruples, and each scruple into 20 grains - a hierarchy memorised by every 19th-century pharmacist.
About Milligrams
A milligram (mg) is one thousandth of a gram (10⁻³ g). It is the primary unit for pharmaceutical dosing: aspirin tablets are typically 500 mg, ibuprofen 200-400 mg, and melatonin supplements 0.5-10 mg. Precious metal assay results and alloy compositions are specified in milligrams per kilogram (mg/kg = ppm). Nutritional labels worldwide list mineral content in milligrams - the recommended daily intake of iron is 8-18 mg, calcium 1000 mg, and sodium under 2300 mg. A grain of rice weighs about 25-30 mg, and a medium eyelash approximately 0.1 mg.
Quick Reference Table
| Scruples (s ap) | Milligrams (mg) |
|---|---|
| 1 s ap | 1295.98 mg |
| 2 s ap | 2591.96 mg |
| 5 s ap | 6479.89 mg |
| 10 s ap | 12959.8 mg |
| 25 s ap | 32399.5 mg |
| 50 s ap | 64798.9 mg |
| 100 s ap | 129598 mg |