Mass and Weight · Unit Converter

Convert Stone (US) to Quarter (US)

Convert stones (us) to quarters (us) instantly. 1 stone (us) = 0.5 quarter (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Quarter (US) 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

Quarter (US)

What is a quarter (us)?

The US quarter equals one-fourth of a short hundredweight, 25 pounds (about 11.34 kg).

Origin of the quarter (us)

A 'quarter' of the US short hundredweight.

Where it is used

US agricultural and commodity weighing.

When and where it was developed

Defined within the US customary hundredweight system.

Stone (US) to Quarter (US) conversion formula

The relationship between stones (us) and quarters (us):

1 st = 0.5 qr
1 qr = 2 st

To convert stones (us) to quarters (us), multiply the value in stones (us) by 0.5. To reverse, multiply quarters (us) by 2.

How to use this converter

Type a value into the calculator. The result in quarters (us) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Quarter (US) to Stone (US) converter for the reverse direction.

Step-by-step: convert stones (us) to quarters (us)

  1. Write down the value in stones (us) (st).
  2. Multiply that value by the factor 0.5.
  3. The product is the equivalent value in quarters (us) (qr).
  4. To reverse, multiply the quarter (us) value by 2.

Worked examples

Example 1 — Convert 1 st to qr:
1 × 0.5 = 0.5 qr

Example 2 — Convert 100 st to qr:
100 × 0.5 = 50 qr

Real-world example — Fabric purchase length

Two stones (us) of fabric equals a value in quarters (us) essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.

2 st × 0.5 = 1 qr

Real-world example — Maritime depth conversion

A 10-stone (us) sounding depth converts cleanly into quarters (us). Recreational divers and sailors translate between the two units whenever they read legacy charts against modern depth-sounder displays.

10 st × 0.5 = 5 qr

Real-world example — Reference scenario in case of fallback

Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.

1 st × 0.5 = 0.5 qr

Stone (US) to Quarter (US) conversion table

Standard reference values for converting stones (us) to quarters (us):

Stone (US) [st]Quarter (US) [qr]
0.010.005
0.10.05
10.5
21
31.5
42
52.5
105
2010
3015
4020
5025
10050
500250
1000500

Frequently asked questions

How many quarters (us) is 1 stone (us)?
1 stone (us) equals 0.5 quarter (us).
How do I convert stones (us) to quarters (us)?
Multiply the value in stones (us) by 0.5 to get quarters (us).
How do I convert quarters (us) back to stones (us)?
Multiply the value in quarters (us) by 2, or use the Quarter (US) to Stone (US) converter.
How many quarters (us) is 100 stones (us)?
100 stones (us) equals 50 quarters (us), because 100 × 0.5 = 50.

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 = 0.5 qr) verified against the following authoritative sources:

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