Convert Quadrans (Biblical Roman) to Dram (apothecary/troy)
Convert quadranses (biblical roman) to drams (apothecary/troy) instantly. 1 quadrans (biblical roman) = 0.0154725596 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Quadrans (Biblical Roman) converter for the reverse conversion.
Units explained
Quadrans (Biblical Roman)
The quadrans was a quarter of an as, about 0.06 gram in this scale.
From Latin 'quadrans', a quarter part.
Roman small change referenced in scripture.
A minor Roman bronze denomination.
Dram (apothecary/troy)
The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.
From the apothecaries' system rooted in the Greek 'drachma'.
Historical pharmacy and medicine compounding.
Part of the apothecaries' system of weights used through the 19th century.
Quadrans (Biblical Roman) to Dram (apothecary/troy) conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between quadranses (biblical roman) and drams (apothecary/troy):
To convert quadranses (biblical roman) to drams (apothecary/troy), multiply the value in quadranses (biblical roman) by 0.0154725596. To reverse, multiply drams (apothecary/troy) by 64.630547424.
How to use this converter
Type a value into the calculator. The result in drams (apothecary/troy) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dram (apothecary/troy) to Quadrans (Biblical Roman) converter for the reverse direction.
Step-by-step: convert quadranses (biblical roman) to drams (apothecary/troy)
- Write down the value in quadranses (biblical roman) (quadrans).
- Multiply that value by the factor 0.0154725596.
- The product is the equivalent value in drams (apothecary/troy) (dr ap).
- To reverse, multiply the dram (apothecary/troy) value by 64.630547424.
Worked examples
Example 1 — Convert 1 quadrans to dr ap:
1 × 0.0154725596 = 0.0154725596 dr ap
Example 2 — Convert 100 quadrans to dr ap:
100 × 0.0154725596 = 1.5472559646 dr ap
Real-world example — Packaging gauge
A 4-quadrans (biblical roman) plastic bag thickness is a common spec for grocery and freezer bags. Converting from quadranses (biblical roman) to drams (apothecary/troy) is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 quadrans × 0.0154725596 = 0.0618902386 dr ap
Real-world example — Plastic film and laminate thickness
A 500-quadrans (biblical roman) sheet is a typical spec for ID-card laminates and film overlays. Converting to drams (apothecary/troy) aligns the value with the unit most CAD systems and material datasheets prefer.
500 quadrans × 0.0154725596 = 7.7362798232 dr ap
Quadrans (Biblical Roman) to Dram (apothecary/troy) conversion table
Standard reference values for converting quadranses (biblical roman) to drams (apothecary/troy):
| Quadrans (Biblical Roman) [quadrans] | Dram (apothecary/troy) [dr ap] |
|---|---|
| 0.01 | 0.0001547256 |
| 0.1 | 0.001547256 |
| 1 | 0.0154725596 |
| 2 | 0.0309451193 |
| 3 | 0.0464176789 |
| 4 | 0.0618902386 |
| 5 | 0.0773627982 |
| 10 | 0.1547255965 |
| 20 | 0.3094511929 |
| 30 | 0.4641767894 |
| 40 | 0.6189023859 |
| 50 | 0.7736279823 |
| 100 | 1.5472559646 |
| 500 | 7.7362798232 |
| 1000 | 15.4725596465 |
Frequently asked questions
How many drams (apothecary/troy) is 1 quadrans (biblical roman)?
How do I convert quadranses (biblical roman) to drams (apothecary/troy)?
How do I convert drams (apothecary/troy) back to quadranses (biblical roman)?
How many drams (apothecary/troy) is 100 quadranses (biblical roman)?
Popular weight unit conversions
Convert Quadrans (Biblical Roman) to other weight units
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (13 units)
Sources & references
Conversion factor (1 quadrans = 0.0154725596 dr ap) 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.