Mass and Weight · Unit Converter

Convert Stone (UK) to Poundal

Convert stones (uk) to poundals instantly. 1 stone (uk) = 450.7999988869 poundal — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Poundal 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

Poundal

What is a poundal?

The poundal (pdl) is the FPS absolute unit of force; its mass-equivalent on this scale is about 0.0141 kg.

Origin of the poundal

Defined in the foot-pound-second absolute system in the late 19th century.

Where it is used

Early 20th-century physics and engineering.

When and where it was developed

Introduced in the absolute FPS system as an alternative to gravitational units.

Stone (UK) to Poundal conversion formula

The relationship between stones (uk) and poundals:

1 st = 450.7999988869 pdl
1 pdl = 0.0022182786 st

To convert stones (uk) to poundals, multiply the value in stones (uk) by 450.7999988869. To reverse, multiply poundals by 0.0022182786.

How to use this converter

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

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

  1. Write down the value in stones (uk) (st).
  2. Multiply that value by the factor 450.7999988869.
  3. The product is the equivalent value in poundals (pdl).
  4. To reverse, multiply the poundal value by 0.0022182786.

Worked examples

Example 1 — Convert 1 st to pdl:
1 × 450.7999988869 = 450.7999988869 pdl

Example 2 — Convert 100 st to pdl:
100 × 450.7999988869 = 45079.9998886895 pdl

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

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

1.75 st × 450.7999988869 = 788.8999980521 pdl

Real-world example — Pet and accessory dimensions

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

3 st × 450.7999988869 = 1352.3999966607 pdl

Real-world example — Fabric and tailoring

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

1 st × 450.7999988869 = 450.7999988869 pdl

Stone (UK) to Poundal conversion table

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

Stone (UK) [st]Poundal [pdl]
0.014.5079999889
0.145.0799998887
1450.7999988869
2901.5999977738
31352.3999966607
41803.1999955476
52253.9999944345
104507.9999888689
209015.9999777379
3013523.9999666068
4018031.9999554758
5022539.9999443447
10045079.9998886895
500225399.9994434474
1000450799.9988868948

Frequently asked questions

How many poundals is 1 stone (uk)?
1 stone (uk) equals 450.7999988869 poundal.
How do I convert stones (uk) to poundals?
Multiply the value in stones (uk) by 450.7999988869 to get poundals.
How do I convert poundals back to stones (uk)?
Multiply the value in poundals by 0.0022182786, or use the Poundal to Stone (UK) converter.
How many poundals is 100 stones (uk)?
100 stones (uk) equals 45079.9998886895 poundals, because 100 × 450.7999988869 = 45079.9998886895.

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 = 450.7999988869 pdl) verified against the following authoritative sources:

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