Mass and Weight · Unit Converter

Convert Stone (UK) to Slug

Convert stones (uk) to slugs instantly. 1 stone (uk) = 0.4351333024 slug — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Slug 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.

Force / Engineering

Slug

What is a slug?

The slug is the mass that accelerates at 1 ft/s^2 under a force of one pound-force, about 14.59 kg.

Origin of the slug

Coined in the early 20th century for the British gravitational (engineering) system.

Where it is used

US and British engineering dynamics.

When and where it was developed

Introduced in the British gravitational system of units.

Stone (UK) to Slug conversion formula

The relationship between stones (uk) and slugs:

1 st = 0.4351333024 slug
1 slug = 2.2981463255 st

To convert stones (uk) to slugs, multiply the value in stones (uk) by 0.4351333024. To reverse, multiply slugs by 2.2981463255.

How to use this converter

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

Step-by-step: convert stones (uk) to slugs

  1. Write down the value in stones (uk) (st).
  2. Multiply that value by the factor 0.4351333024.
  3. The product is the equivalent value in slugs (slug).
  4. To reverse, multiply the slug value by 2.2981463255.

Worked examples

Example 1 — Convert 1 st to slug:
1 × 0.4351333024 = 0.4351333024 slug

Example 2 — Convert 100 st to slug:
100 × 0.4351333024 = 43.5133302402 slug

Real-world example — Maritime depth conversion

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

10 st × 0.4351333024 = 4.351333024 slug

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 × 0.4351333024 = 0.4351333024 slug

Real-world example — Adult height conversion

A 1.8-stone (uk)-tall person measures a value in slugs 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 × 0.4351333024 = 0.7832399443 slug

Stone (UK) to Slug conversion table

Standard reference values for converting stones (uk) to slugs:

Stone (UK) [st]Slug [slug]
0.010.004351333
0.10.0435133302
10.4351333024
20.8702666048
31.3053999072
41.7405332096
52.175666512
104.351333024
208.702666048
3013.0539990721
4017.4053320961
5021.7566651201
10043.5133302402
500217.5666512011
1000435.1333024021

Frequently asked questions

How many slugs is 1 stone (uk)?
1 stone (uk) equals 0.4351333024 slug.
How do I convert stones (uk) to slugs?
Multiply the value in stones (uk) by 0.4351333024 to get slugs.
How do I convert slugs back to stones (uk)?
Multiply the value in slugs by 2.2981463255, or use the Slug to Stone (UK) converter.
How many slugs is 100 stones (uk)?
100 stones (uk) equals 43.5133302402 slugs, because 100 × 0.4351333024 = 43.5133302402.

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 = 0.4351333024 slug) verified against the following authoritative sources:

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