Mass and Weight · Unit Converter

Convert Dram (apothecary/troy) to Seer (Ser)

Convert drams (apothecary/troy) to seers (ser) instantly. 1 dram (apothecary/troy) = 0.0041666667 seer (ser) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Seer (Ser) 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.

Indian / South Asian

Seer (Ser)

What is a seer (ser)?

The seer (ser) equals about 933 grams, or eighty tola (close to one kilogram).

Origin of the seer (ser)

From Hindi/Urdu 'ser', a major pre-metric trade weight.

Where it is used

Historical grain, milk, and produce trade across South Asia.

When and where it was developed

Standardized in British India; aligned near 1 kg after metrication.

Dram (apothecary/troy) to Seer (Ser) 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 drams (apothecary/troy) and seers (ser):

1 dr ap = 0.0041666667 seer
1 seer = 239.9999989712 dr ap

To convert drams (apothecary/troy) to seers (ser), multiply the value in drams (apothecary/troy) by 0.0041666667. To reverse, multiply seers (ser) by 239.9999989712.

How to use this converter

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

Step-by-step: convert drams (apothecary/troy) to seers (ser)

  1. Write down the value in drams (apothecary/troy) (dr ap).
  2. Multiply that value by the factor 0.0041666667.
  3. The product is the equivalent value in seers (ser) (seer).
  4. To reverse, multiply the seer (ser) value by 239.9999989712.

Worked examples

Example 1 — Convert 1 dr ap to seer:
1 × 0.0041666667 = 0.0041666667 seer

Example 2 — Convert 100 dr ap to seer:
100 × 0.0041666667 = 0.4166666685 seer

Real-world example — Body height conversion

You enter your height as 180 drams (apothecary/troy) into an international job or visa application. The form then asks for the same value in seers (ser) — converting between these adjacent units is one of the most-used length conversions globally.

180 dr ap × 0.0041666667 = 0.7500000032 seer

Real-world example — Furniture and large objects

A 72-dram (apothecary/troy) piece of furniture converts to a value in seers (ser) that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.

72 dr ap × 0.0041666667 = 0.3000000013 seer

Real-world example — Children's height milestones

A 150-dram (apothecary/troy)-tall child measures a value in seers (ser) that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.

150 dr ap × 0.0041666667 = 0.6250000027 seer

Dram (apothecary/troy) to Seer (Ser) conversion table

Standard reference values for converting drams (apothecary/troy) to seers (ser):

Dram (apothecary/troy) [dr ap]Seer (Ser) [seer]
0.014.166667e-5
0.10.0004166667
10.0041666667
20.0083333334
30.0125000001
40.0166666667
50.0208333334
100.0416666668
200.0833333337
300.1250000005
400.1666666674
500.2083333342
1000.4166666685
5002.0833333423
10004.1666666845

Frequently asked questions

How many seers (ser) is 1 dram (apothecary/troy)?
1 dram (apothecary/troy) equals 0.0041666667 seer (ser).
How do I convert drams (apothecary/troy) to seers (ser)?
Multiply the value in drams (apothecary/troy) by 0.0041666667 to get seers (ser).
How do I convert seers (ser) back to drams (apothecary/troy)?
Multiply the value in seers (ser) by 239.9999989712, or use the Seer (Ser) to Dram (apothecary/troy) converter.
How many seers (ser) is 100 drams (apothecary/troy)?
100 drams (apothecary/troy) equals 0.4166666685 seers (ser), because 100 × 0.0041666667 = 0.4166666685.

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 = 0.0041666667 seer) verified against the following authoritative sources:

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