Convert Ton (assay) (US) to Dram (apothecary/troy)
Convert tons (assay) (us) to drams (apothecary/troy) instantly. 1 ton (assay) (us) = 7.5018417234 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Ton (assay) (US) converter for the reverse conversion.
Units explained
Ton (assay) (US)
The assay ton (US) equals about 29.167 grams, a mining-assay convenience unit.
Devised so an assay sample's metal in milligrams reads as troy ounces per short ton.
Ore assaying and metallurgy.
Adopted in assay laboratories to simplify ore-grade calculation.
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.
Ton (assay) (US) to Dram (apothecary/troy) conversion formula
The relationship between tons (assay) (us) and drams (apothecary/troy):
To convert tons (assay) (us) to drams (apothecary/troy), multiply the value in tons (assay) (us) by 7.5018417234. To reverse, multiply drams (apothecary/troy) by 0.1333005996.
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 Ton (assay) (US) converter for the reverse direction.
Step-by-step: convert tons (assay) (us) to drams (apothecary/troy)
- Write down the value in tons (assay) (us) (AT).
- Multiply that value by the factor 7.5018417234.
- The product is the equivalent value in drams (apothecary/troy) (dr ap).
- To reverse, multiply the dram (apothecary/troy) value by 0.1333005996.
Worked examples
Example 1 — Convert 1 AT to dr ap:
1 × 7.5018417234 = 7.5018417234 dr ap
Example 2 — Convert 100 AT to dr ap:
100 × 7.5018417234 = 750.1841723366 dr ap
Real-world example — Postcard and small-object dimensions
A postcard is about 5 tons (assay) (us) wide. Converting to drams (apothecary/troy) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 AT × 7.5018417234 = 37.5092086168 dr ap
Real-world example — Ruler-scale measurements
A 30-ton (assay) (us) school ruler converts cleanly to drams (apothecary/troy) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 AT × 7.5018417234 = 225.055251701 dr ap
Real-world example — Hardware-scale dimensions
A 10-ton (assay) (us) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between tons (assay) (us) and drams (apothecary/troy) daily when mixing metric and imperial tools.
10 AT × 7.5018417234 = 75.0184172337 dr ap
Ton (assay) (US) to Dram (apothecary/troy) conversion table
Standard reference values for converting tons (assay) (us) to drams (apothecary/troy):
| Ton (assay) (US) [AT] | Dram (apothecary/troy) [dr ap] |
|---|---|
| 0.01 | 0.0750184172 |
| 0.1 | 0.7501841723 |
| 1 | 7.5018417234 |
| 2 | 15.0036834467 |
| 3 | 22.5055251701 |
| 4 | 30.0073668935 |
| 5 | 37.5092086168 |
| 10 | 75.0184172337 |
| 20 | 150.0368344673 |
| 30 | 225.055251701 |
| 40 | 300.0736689347 |
| 50 | 375.0920861683 |
| 100 | 750.1841723366 |
| 500 | 3750.9208616832 |
| 1000 | 7501.8417233664 |
Frequently asked questions
How many drams (apothecary/troy) is 1 ton (assay) (us)?
How do I convert tons (assay) (us) to drams (apothecary/troy)?
How do I convert drams (apothecary/troy) back to tons (assay) (us)?
How many drams (apothecary/troy) is 100 tons (assay) (us)?
Popular weight unit conversions
Convert Ton (assay) (US) to other weight units
Show all Ton (assay) (US) conversions
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 (14 units)
Sources & references
Conversion factor (1 AT = 7.5018417234 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 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.