Convert Scruple (apothecary) to Point (1/100 carat)
Convert scruples (apothecary) to points (1/100 carat) instantly. 1 scruple (apothecary) = 647.9891 point (1/100 carat) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Point (1/100 carat) to Scruple (apothecary) converter for the reverse conversion.
Units explained
Scruple (apothecary)
The apothecary scruple equals 20 grains, about 1.296 grams.
From Latin 'scrupulus', a small sharp pebble used as a tiny weight.
Historical apothecary dosing of powders.
Part of the apothecaries' system used through the 19th century.
Point (1/100 carat)
A point equals one-hundredth of a carat, or 2 milligrams.
A subdivision of the metric carat for very small stones.
The diamond trade, for sub-carat stones.
Adopted alongside the metric carat in the 20th-century gem trade.
Scruple (apothecary) to Point (1/100 carat) conversion formula
The relationship between scruples (apothecary) and points (1/100 carat):
To convert scruples (apothecary) to points (1/100 carat), multiply the value in scruples (apothecary) by 647.9891. To reverse, multiply points (1/100 carat) by 0.0015432358.
How to use this converter
Type a value into the calculator. The result in points (1/100 carat) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Point (1/100 carat) to Scruple (apothecary) converter for the reverse direction.
Step-by-step: convert scruples (apothecary) to points (1/100 carat)
- Write down the value in scruples (apothecary) (s ap).
- Multiply that value by the factor 647.9891.
- The product is the equivalent value in points (1/100 carat) (pt).
- To reverse, multiply the point (1/100 carat) value by 0.0015432358.
Worked examples
Example 1 — Convert 1 s ap to pt:
1 × 647.9891 = 647.9891 pt
Example 2 — Convert 100 s ap to pt:
100 × 647.9891 = 64798.91 pt
Real-world example — Adjacent metric sub-units
One scruple (apothecary) equals 1,000 points (1/100 carat). Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 s ap × 647.9891 = 647.9891 pt
Real-world example — Adjacent small-scale precision
One scruple (apothecary) equals 1,000 points (1/100 carat) — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).
1 s ap × 647.9891 = 647.9891 pt
Scruple (apothecary) to Point (1/100 carat) conversion table
Standard reference values for converting scruples (apothecary) to points (1/100 carat):
| Scruple (apothecary) [s ap] | Point (1/100 carat) [pt] |
|---|---|
| 0.01 | 6.479891 |
| 0.1 | 64.79891 |
| 1 | 647.9891 |
| 2 | 1295.9782 |
| 3 | 1943.9673 |
| 4 | 2591.9564 |
| 5 | 3239.9455 |
| 10 | 6479.891 |
| 20 | 12959.782 |
| 30 | 19439.673 |
| 40 | 25919.564 |
| 50 | 32399.455 |
| 100 | 64798.91 |
| 500 | 323994.55 |
| 1000 | 647989.1 |
Frequently asked questions
How many points (1/100 carat) is 1 scruple (apothecary)?
How do I convert scruples (apothecary) to points (1/100 carat)?
How do I convert points (1/100 carat) back to scruples (apothecary)?
How many points (1/100 carat) is 100 scruples (apothecary)?
Popular weight unit conversions
Convert Scruple (apothecary) to other weight units
Show all Scruple (apothecary) conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 s ap = 647.9891 pt) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.