Mass and Weight · Unit Converter

Convert Stone (UK) to Pound (troy/apothecary)

Convert stones (uk) to pounds (troy/apothecary) instantly. 1 stone (uk) = 17.0138888889 pound (troy/apothecary) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pound (troy/apothecary) to Stone (UK) 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 (UK)

What is a stone (uk)?

The UK stone (st) equals 14 pounds, about 6.35 kilograms.

Origin of the stone (uk)

From standardized market 'stones' once used for weighing goods.

Where it is used

Body weight in the United Kingdom and Ireland.

When and where it was developed

Fixed at 14 pounds by British statute in 1835.

Troy & Apothecary

Pound (troy/apothecary)

What is a pound (troy/apothecary)?

The troy (apothecary) pound equals 12 troy ounces, about 373.24 grams.

Origin of the pound (troy/apothecary)

Named for Troyes, France, a major medieval trade-fair town.

Where it is used

Historical pricing of precious metals; now largely superseded by the troy ounce.

When and where it was developed

Adopted as the English coinage standard under Henry VIII in 1528.

Stone (UK) to Pound (troy/apothecary) conversion formula

The relationship between stones (uk) and pounds (troy/apothecary):

1 st = 17.0138888889 lb t
1 lb t = 0.0587755102 st

To convert stones (uk) to pounds (troy/apothecary), multiply the value in stones (uk) by 17.0138888889. To reverse, multiply pounds (troy/apothecary) by 0.0587755102.

How to use this converter

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

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

  1. Write down the value in stones (uk) (st).
  2. Multiply that value by the factor 17.0138888889.
  3. The product is the equivalent value in pounds (troy/apothecary) (lb t).
  4. To reverse, multiply the pound (troy/apothecary) value by 0.0587755102.

Worked examples

Example 1 — Convert 1 st to lb t:
1 × 17.0138888889 = 17.0138888889 lb t

Example 2 — Convert 100 st to lb t:
100 × 17.0138888889 = 1701.3888888889 lb t

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 × 17.0138888889 = 17.0138888889 lb t

Real-world example — Adult height conversion

A 1.8-stone (uk)-tall person measures a value in pounds (troy/apothecary) that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.

1.8 st × 17.0138888889 = 30.625 lb t

Real-world example — Fabric purchase length

Two stones (uk) of fabric equals a value in pounds (troy/apothecary) essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.

2 st × 17.0138888889 = 34.0277777778 lb t

Stone (UK) to Pound (troy/apothecary) conversion table

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

Stone (UK) [st]Pound (troy/apothecary) [lb t]
0.010.1701388889
0.11.7013888889
117.0138888889
234.0277777778
351.0416666667
468.0555555556
585.0694444444
10170.1388888889
20340.2777777778
30510.4166666667
40680.5555555556
50850.6944444444
1001701.3888888889
5008506.9444444444
100017013.8888888889

Frequently asked questions

How many pounds (troy/apothecary) is 1 stone (uk)?
1 stone (uk) equals 17.0138888889 pound (troy/apothecary).
How do I convert stones (uk) to pounds (troy/apothecary)?
Multiply the value in stones (uk) by 17.0138888889 to get pounds (troy/apothecary).
How do I convert pounds (troy/apothecary) back to stones (uk)?
Multiply the value in pounds (troy/apothecary) by 0.0587755102, or use the Pound (troy/apothecary) to Stone (UK) converter.
How many pounds (troy/apothecary) is 100 stones (uk)?
100 stones (uk) equals 1701.3888888889 pounds (troy/apothecary), because 100 × 17.0138888889 = 1701.3888888889.

Convert Stone (UK) to other weight units

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

Sources & references

Conversion factor (1 st = 17.0138888889 lb t) verified against the following authoritative sources:

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