Mass and Weight · Unit Converter

Convert Stone (US) to Dram (avoirdupois)

Convert stones (us) to drams (avoirdupois) instantly. 1 stone (us) = 3199.9999915342 dram (avoirdupois) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (avoirdupois) to Stone (US) 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

Stone (US)

What is a stone (us)?

A less common US definition of the stone, about 5.67 kilograms.

Origin of the stone (us)

A variant stone weight used in some historical US trade.

Where it is used

Rare; appears mainly in historical or specialized contexts.

When and where it was developed

Derived from older English stone weights that varied by commodity.

Avoirdupois

Dram (avoirdupois)

What is a dram (avoirdupois)?

The avoirdupois dram (dr) equals one-sixteenth of an ounce, about 1.77 grams.

Origin of the dram (avoirdupois)

From Greek 'drachma' through Latin 'dragma'.

Where it is used

Historically pharmacy; today occasional cooking and firearms (powder) use.

When and where it was developed

Defined as 1/256 of the avoirdupois pound.

Stone (US) to Dram (avoirdupois) conversion formula

The relationship between stones (us) and drams (avoirdupois):

1 st = 3199.9999915342 dr
1 dr = 0.0003125 st

To convert stones (us) to drams (avoirdupois), multiply the value in stones (us) by 3199.9999915342. To reverse, multiply drams (avoirdupois) by 0.0003125.

How to use this converter

Type a value into the calculator. The result in drams (avoirdupois) 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 (avoirdupois) to Stone (US) converter for the reverse direction.

Step-by-step: convert stones (us) to drams (avoirdupois)

  1. Write down the value in stones (us) (st).
  2. Multiply that value by the factor 3199.9999915342.
  3. The product is the equivalent value in drams (avoirdupois) (dr).
  4. To reverse, multiply the dram (avoirdupois) value by 0.0003125.

Worked examples

Example 1 — Convert 1 st to dr:
1 × 3199.9999915342 = 3199.9999915342 dr

Example 2 — Convert 100 st to dr:
100 × 3199.9999915342 = 319999.9991534249 dr

Real-world example — Pet and accessory dimensions

A 3-stone (us) dog leash equals a tidy round value in drams (avoirdupois). Pet-supply shopping frequently mixes the two units across product specifications.

3 st × 3199.9999915342 = 9599.9999746027 dr

Real-world example — Fabric and tailoring

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

1 st × 3199.9999915342 = 3199.9999915342 dr

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

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

1.75 st × 3199.9999915342 = 5599.9999851849 dr

Stone (US) to Dram (avoirdupois) conversion table

Standard reference values for converting stones (us) to drams (avoirdupois):

Stone (US) [st]Dram (avoirdupois) [dr]
0.0131.9999999153
0.1319.9999991534
13199.9999915342
26399.9999830685
39599.9999746027
412799.999966137
515999.9999576712
1031999.9999153425
2063999.999830685
3095999.9997460275
40127999.99966137
50159999.9995767125
100319999.9991534249
5001599999.9957671245
10003199999.9915342489

Frequently asked questions

How many drams (avoirdupois) is 1 stone (us)?
1 stone (us) equals 3199.9999915342 dram (avoirdupois).
How do I convert stones (us) to drams (avoirdupois)?
Multiply the value in stones (us) by 3199.9999915342 to get drams (avoirdupois).
How do I convert drams (avoirdupois) back to stones (us)?
Multiply the value in drams (avoirdupois) by 0.0003125, or use the Dram (avoirdupois) to Stone (US) converter.
How many drams (avoirdupois) is 100 stones (us)?
100 stones (us) equals 319999.9991534249 drams (avoirdupois), because 100 × 3199.9999915342 = 319999.9991534249.

Convert Stone (US) to other weight units

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

Sources & references

Conversion factor (1 st = 3199.9999915342 dr) verified against the following authoritative sources:

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