Convert Scruples to Kilotonnes
Convert Scruples (s ap) to Kilotonnes (kt) instantly and accurately.
Conversion Formula
kt = s ap × 1.295978200e-9
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 Kilotonnes
A kilotonne (kt) equals 1,000 metric tonnes (10⁶ kg). In military and geopolitical contexts, nuclear weapon yields are expressed in kilotons of TNT equivalent (kt TNT): the atomic bomb dropped on Hiroshima had a yield of approximately 15 kt TNT. Environmental science uses kilotonnes for reporting regional greenhouse gas inventories, industrial pollutant releases, and annual waste generation. Mining operations quote ore extraction rates in kilotonnes per day. The global atmospheric inventory of various trace gases is reported in kilotonnes.
Quick Reference Table
| Scruples (s ap) | Kilotonnes (kt) |
|---|---|
| 1 s ap | 1.296 × 10-9 kt |
| 2 s ap | 2.592 × 10-9 kt |
| 5 s ap | 6.48 × 10-9 kt |
| 10 s ap | 1.296 × 10-8 kt |
| 25 s ap | 3.24 × 10-8 kt |
| 50 s ap | 6.48 × 10-8 kt |
| 100 s ap | 1.296 × 10-7 kt |