Convert Apothecary Ounces to Solar Masses
Convert Apothecary Ounces (oz ap) to Solar Masses (M☉) instantly and accurately.
Conversion Formula
M☉ = oz ap × 1.563837500e-32
About Apothecary Ounces
An apothecary ounce (oz ap) is identical in mass to the troy ounce - approximately 31.10 grams - and equals 8 apothecary drams or 480 grains. It was the standard ounce used by pharmacists and physicians across Europe and North America from medieval times until the 20th century. Although the apothecary system has been replaced by SI units in modern medicine, the apothecary ounce still appears in historical pharmacopeias, traditional herbal medicine texts, and some compounding pharmacy references.
About Solar Masses
A solar mass (M☉) is the mass of our Sun - approximately 1.989 × 10³⁰ kg - and is the standard unit for measuring stellar and galactic masses in astronomy. The Sun contains 99.86% of the total mass of the Solar System. Stellar evolution models describe stars of 0.08 M☉ (the minimum for hydrogen fusion) to over 200 M☉ (the most massive known stars). Supermassive black holes at the centres of galaxies range from millions to billions of solar masses: the black hole at the centre of the Milky Way (Sagittarius A*) is approximately 4.3 million M☉.
Quick Reference Table
| Apothecary Ounces (oz ap) | Solar Masses (M☉) |
|---|---|
| 1 oz ap | 1.564 × 10-32 M☉ |
| 2 oz ap | 3.128 × 10-32 M☉ |
| 5 oz ap | 7.819 × 10-32 M☉ |
| 10 oz ap | 1.564 × 10-31 M☉ |
| 25 oz ap | 3.91 × 10-31 M☉ |
| 50 oz ap | 7.819 × 10-31 M☉ |
| 100 oz ap | 1.564 × 10-30 M☉ |