Mass and Weight · Unit Converter

Convert Dram (apothecary/troy) to Metric Ton

Convert drams (apothecary/troy) to metric tons instantly. 1 dram (apothecary/troy) = 3.887935e-6 metric ton — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Ton to Dram (apothecary/troy) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Troy & Apothecary

Dram (apothecary/troy)

What is a dram (apothecary/troy)?

The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.

Origin of the dram (apothecary/troy)

From the apothecaries' system rooted in the Greek 'drachma'.

Where it is used

Historical pharmacy and medicine compounding.

When and where it was developed

Part of the apothecaries' system of weights used through the 19th century.

Metric / SI

Metric Ton

What is a metric ton?

The metric ton (t) equals exactly 1,000 kilograms; it is also called the tonne.

Origin of the metric ton

From 'tun', a large medieval cask; 'metric' distinguishes it from imperial tons.

Where it is used

The global standard for trade, freight, and heavy industry.

When and where it was developed

Recognized internationally with the spread of the metric system in the late 19th century.

Dram (apothecary/troy) to Metric Ton conversion formula

The relationship between drams (apothecary/troy) and metric tons:

1 dr ap = 3.887935e-6 t
1 t = 257205.9725490239 dr ap

To convert drams (apothecary/troy) to metric tons, multiply the value in drams (apothecary/troy) by 3.887935e-6. To reverse, multiply metric tons by 257205.9725490239.

How to use this converter

Type a value into the calculator. The result in metric tons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Metric Ton to Dram (apothecary/troy) converter for the reverse direction.

Step-by-step: convert drams (apothecary/troy) to metric tons

  1. Write down the value in drams (apothecary/troy) (dr ap).
  2. Multiply that value by the factor 3.887935e-6.
  3. The product is the equivalent value in metric tons (t).
  4. To reverse, multiply the metric ton value by 257205.9725490239.

Worked examples

Example 1 — Convert 1 dr ap to t:
1 × 3.887935e-6 = 3.887935e-6 t

Example 2 — Convert 100 dr ap to t:
100 × 3.887935e-6 = 0.0003887935 t

Real-world example — Small to geographic-scale

100,000 drams (apothecary/troy) equals one metric ton — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.

100000 dr ap × 3.887935e-6 = 0.38879346 t

Real-world example — Architectural to geographic scale

A 100,000-dram (apothecary/troy) measurement equals one metric ton. The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.

100000 dr ap × 3.887935e-6 = 0.38879346 t

Dram (apothecary/troy) to Metric Ton conversion table

Standard reference values for converting drams (apothecary/troy) to metric tons:

Dram (apothecary/troy) [dr ap]Metric Ton [t]
0.013.887935e-8
0.13.887935e-7
13.887935e-6
27.775869e-6
31.16638e-5
41.555174e-5
51.943967e-5
103.887935e-5
207.775869e-5
300.000116638
400.0001555174
500.0001943967
1000.0003887935
5000.0019439673
10000.0038879346

Frequently asked questions

How many metric tons is 1 dram (apothecary/troy)?
1 dram (apothecary/troy) equals 3.887935e-6 metric ton.
How do I convert drams (apothecary/troy) to metric tons?
Multiply the value in drams (apothecary/troy) by 3.887935e-6 to get metric tons.
How do I convert metric tons back to drams (apothecary/troy)?
Multiply the value in metric tons by 257205.9725490239, or use the Metric Ton to Dram (apothecary/troy) converter.
How many metric tons is 100 drams (apothecary/troy)?
100 drams (apothecary/troy) equals 0.0003887935 metric tons, because 100 × 3.887935e-6 = 0.0003887935.

Convert Dram (apothecary/troy) to other weight units

Show all Dram (apothecary/troy) conversions
Metric / SI (18 units)
Dram (apothecary/troy) to Attogram (ag) Dram (apothecary/troy) to Femtogram (fg) Dram (apothecary/troy) to Picogram (pg) Dram (apothecary/troy) to Nanogram (ng) Dram (apothecary/troy) to Microgram (µg) Dram (apothecary/troy) to Milligram (mg) Dram (apothecary/troy) to Centigram (cg) Dram (apothecary/troy) to Decigram (dg) Dram (apothecary/troy) to Gram (g) Dram (apothecary/troy) to Dekagram (dag) Dram (apothecary/troy) to Hectogram (hg) Dram (apothecary/troy) to Kilogram (kg) Dram (apothecary/troy) to Quintal (metric) (q) Dram (apothecary/troy) to Metric Ton (t) Dram (apothecary/troy) to Gigagram (Gg) Dram (apothecary/troy) to Teragram (Tg) Dram (apothecary/troy) to Petagram (Pg) Dram (apothecary/troy) to Exagram (Eg)
Avoirdupois (15 units)
Dram (apothecary/troy) to Grain (gr) Dram (apothecary/troy) to Dram (avoirdupois) (dr) Dram (apothecary/troy) to Ounce (oz) Dram (apothecary/troy) to Pound (lb) Dram (apothecary/troy) to Clove (clove) Dram (apothecary/troy) to Stone (US) (st) Dram (apothecary/troy) to Stone (UK) (st) Dram (apothecary/troy) to Quarter (US) (qr) Dram (apothecary/troy) to Quarter (UK) (qr) Dram (apothecary/troy) to Hundredweight (US) (cwt) Dram (apothecary/troy) to Hundredweight (UK) (cwt) Dram (apothecary/troy) to Wey (wey) Dram (apothecary/troy) to Kilopound (kip) (kip) Dram (apothecary/troy) to Ton (short, US) (sh tn) Dram (apothecary/troy) to Ton (long, UK) (long tn)
Troy & Apothecary (9 units)
Dram (apothecary/troy) to Point (1/100 carat) (pt) Dram (apothecary/troy) to Carat (metric) (ct) Dram (apothecary/troy) to Scruple (apothecary) (s ap) Dram (apothecary/troy) to Pennyweight (dwt) Dram (apothecary/troy) to Momme (mom) Dram (apothecary/troy) to Mace (mace) Dram (apothecary/troy) to Troy Ounce (oz t) Dram (apothecary/troy) to Tael (tael) Dram (apothecary/troy) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Dram (apothecary/troy) to Ratti (ratti) Dram (apothecary/troy) to Masha (masha) Dram (apothecary/troy) to Tola (tola) Dram (apothecary/troy) to Chittack (Chatank) (chittack) Dram (apothecary/troy) to Seer (Ser) (seer) Dram (apothecary/troy) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Dram (apothecary/troy) to Electron Mass (rest) (me) Dram (apothecary/troy) to MeV/c2 (MeV/c²) Dram (apothecary/troy) to Muon Mass (mµ) Dram (apothecary/troy) to Atomic Mass Unit (u) Dram (apothecary/troy) to Proton Mass (mp) Dram (apothecary/troy) to Neutron Mass (mn) Dram (apothecary/troy) to Deuteron Mass (md) Dram (apothecary/troy) to Carbon-12 Atom Mass (C-12) Dram (apothecary/troy) to Planck Mass (mP)
Astronomical (4 units)
Dram (apothecary/troy) to Lunar Mass (Moon) (M☾) Dram (apothecary/troy) to Earth's Mass (M⊕) Dram (apothecary/troy) to Jupiter Mass (MJ) Dram (apothecary/troy) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Dram (apothecary/troy) to Lepton (Biblical Roman) (lepton) Dram (apothecary/troy) to Quadrans (Biblical Roman) (quadrans) Dram (apothecary/troy) to Assarion (Biblical Roman) (assarion) Dram (apothecary/troy) to Gerah (Biblical Hebrew) (gerah) Dram (apothecary/troy) to Drachma (Biblical Greek) (drachma) Dram (apothecary/troy) to Denarius (Biblical Roman) (denarius) Dram (apothecary/troy) to Bekan (Biblical Hebrew) (bekah) Dram (apothecary/troy) to Didrachma (Biblical Greek) (didrachma) Dram (apothecary/troy) to Shekel (Biblical Hebrew) (shekel) Dram (apothecary/troy) to Tetradrachma (Biblical Greek) (tetra) Dram (apothecary/troy) to Mina (Biblical Greek) (mina) Dram (apothecary/troy) to Mina (Biblical Hebrew) (mina) Dram (apothecary/troy) to Talent (Biblical Greek) (talent) Dram (apothecary/troy) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Dram (apothecary/troy) to Poundal (pdl) Dram (apothecary/troy) to Ton (assay) (US) (AT) Dram (apothecary/troy) to Ton (assay) (UK) (AT) Dram (apothecary/troy) to Kilogram-force square second/meter (hyl) Dram (apothecary/troy) to Slug (slug)

Sources & references

Conversion factor (1 dr ap = 3.887935e-6 t) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.