Mass and Weight · Unit Converter

Convert Pound to Dram (apothecary/troy)

Convert pounds to drams (apothecary/troy) instantly. 1 pound = 116.6666666667 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Pound 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

Avoirdupois

Pound

What is a pound?

The pound (lb) is a unit of mass equal to exactly 0.45359237 kilogram.

Origin of the pound

From Latin 'libra pondo' (a pound by weight); the symbol lb comes from 'libra'.

Where it is used

The primary weight unit in the United States and informally in the UK.

When and where it was developed

The international avoirdupois pound was fixed in the 1959 yard-and-pound agreement.

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.

Pound to Dram (apothecary/troy) conversion formula

The relationship between pounds and drams (apothecary/troy):

1 lb = 116.6666666667 dr ap
1 dr ap = 0.0085714286 lb

To convert pounds to drams (apothecary/troy), multiply the value in pounds by 116.6666666667. To reverse, multiply drams (apothecary/troy) by 0.0085714286.

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 Pound converter for the reverse direction.

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

  1. Write down the value in pounds (lb).
  2. Multiply that value by the factor 116.6666666667.
  3. The product is the equivalent value in drams (apothecary/troy) (dr ap).
  4. To reverse, multiply the dram (apothecary/troy) value by 0.0085714286.

Worked examples

Example 1 — Convert 1 lb to dr ap:
1 × 116.6666666667 = 116.6666666667 dr ap

Example 2 — Convert 100 lb to dr ap:
100 × 116.6666666667 = 11666.6666666667 dr ap

Real-world example — Fabric and tailoring

One pound of fabric converts to a value in drams (apothecary/troy) commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.

1 lb × 116.6666666667 = 116.6666666667 dr ap

Real-world example — Body height conversion (reverse direction)

You measure 1.75 pounds tall and need to fill in a gym membership form or medical record that asks for height in drams (apothecary/troy). This is the most-used everyday length conversion in metric-using countries.

1.75 lb × 116.6666666667 = 204.1666666667 dr ap

Real-world example — Pet and accessory dimensions

A 3-pound dog leash equals a tidy round value in drams (apothecary/troy). Pet-supply shopping frequently mixes the two units across product specifications.

3 lb × 116.6666666667 = 350 dr ap

Pound to Dram (apothecary/troy) conversion table

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

Pound [lb]Dram (apothecary/troy) [dr ap]
0.011.1666666667
0.111.6666666667
1116.6666666667
2233.3333333333
3350
4466.6666666667
5583.3333333333
101166.6666666667
202333.3333333333
303500
404666.6666666667
505833.3333333333
10011666.6666666667
50058333.3333333333
1000116666.6666666667

Frequently asked questions

How many drams (apothecary/troy) is 1 pound?
1 pound equals 116.6666666667 dram (apothecary/troy).
How do I convert pounds to drams (apothecary/troy)?
Multiply the value in pounds by 116.6666666667 to get drams (apothecary/troy).
How do I convert drams (apothecary/troy) back to pounds?
Multiply the value in drams (apothecary/troy) by 0.0085714286, or use the Dram (apothecary/troy) to Pound converter.
How many drams (apothecary/troy) is 100 pounds?
100 pounds equals 11666.6666666667 drams (apothecary/troy), because 100 × 116.6666666667 = 11666.6666666667.

Convert Pound to other weight units

Show all Pound conversions
Metric / SI (18 units)
Pound to Attogram (ag) Pound to Femtogram (fg) Pound to Picogram (pg) Pound to Nanogram (ng) Pound to Microgram (µg) Pound to Milligram (mg) Pound to Centigram (cg) Pound to Decigram (dg) Pound to Gram (g) Pound to Dekagram (dag) Pound to Hectogram (hg) Pound to Kilogram (kg) Pound to Quintal (metric) (q) Pound to Metric Ton (t) Pound to Gigagram (Gg) Pound to Teragram (Tg) Pound to Petagram (Pg) Pound to Exagram (Eg)
Avoirdupois (14 units)
Pound to Grain (gr) Pound to Dram (avoirdupois) (dr) Pound to Ounce (oz) Pound to Clove (clove) Pound to Stone (US) (st) Pound to Stone (UK) (st) Pound to Quarter (US) (qr) Pound to Quarter (UK) (qr) Pound to Hundredweight (US) (cwt) Pound to Hundredweight (UK) (cwt) Pound to Wey (wey) Pound to Kilopound (kip) (kip) Pound to Ton (short, US) (sh tn) Pound to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Pound to Point (1/100 carat) (pt) Pound to Carat (metric) (ct) Pound to Scruple (apothecary) (s ap) Pound to Pennyweight (dwt) Pound to Momme (mom) Pound to Mace (mace) Pound to Dram (apothecary/troy) (dr ap) Pound to Troy Ounce (oz t) Pound to Tael (tael) Pound to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Pound to Ratti (ratti) Pound to Masha (masha) Pound to Tola (tola) Pound to Chittack (Chatank) (chittack) Pound to Seer (Ser) (seer) Pound to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Pound to Electron Mass (rest) (me) Pound to MeV/c2 (MeV/c²) Pound to Muon Mass (mµ) Pound to Atomic Mass Unit (u) Pound to Proton Mass (mp) Pound to Neutron Mass (mn) Pound to Deuteron Mass (md) Pound to Carbon-12 Atom Mass (C-12) Pound to Planck Mass (mP)
Astronomical (4 units)
Pound to Lunar Mass (Moon) (M☾) Pound to Earth's Mass (M⊕) Pound to Jupiter Mass (MJ) Pound to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Pound to Lepton (Biblical Roman) (lepton) Pound to Quadrans (Biblical Roman) (quadrans) Pound to Assarion (Biblical Roman) (assarion) Pound to Gerah (Biblical Hebrew) (gerah) Pound to Drachma (Biblical Greek) (drachma) Pound to Denarius (Biblical Roman) (denarius) Pound to Bekan (Biblical Hebrew) (bekah) Pound to Didrachma (Biblical Greek) (didrachma) Pound to Shekel (Biblical Hebrew) (shekel) Pound to Tetradrachma (Biblical Greek) (tetra) Pound to Mina (Biblical Greek) (mina) Pound to Mina (Biblical Hebrew) (mina) Pound to Talent (Biblical Greek) (talent) Pound to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Pound to Poundal (pdl) Pound to Ton (assay) (US) (AT) Pound to Ton (assay) (UK) (AT) Pound to Kilogram-force square second/meter (hyl) Pound to Slug (slug)

Sources & references

Conversion factor (1 lb = 116.6666666667 dr ap) verified against the following authoritative sources:

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