Mass and Weight · Unit Converter

Convert Poundal to Stone (US)

Convert poundals to stones (us) instantly. 1 poundal = 0.0024844721 stone (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Stone (US) to Poundal 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

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.

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.

Poundal to Stone (US) conversion formula

The relationship between poundals and stones (us):

1 pdl = 0.0024844721 st
1 st = 402.4999990062 pdl

To convert poundals to stones (us), multiply the value in poundals by 0.0024844721. To reverse, multiply stones (us) by 402.4999990062.

How to use this converter

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

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

  1. Write down the value in poundals (pdl).
  2. Multiply that value by the factor 0.0024844721.
  3. The product is the equivalent value in stones (us) (st).
  4. To reverse, multiply the stone (us) value by 402.4999990062.

Worked examples

Example 1 — Convert 1 pdl to st:
1 × 0.0024844721 = 0.0024844721 st

Example 2 — Convert 100 pdl to st:
100 × 0.0024844721 = 0.2484472056 st

Real-world example — Furniture and large objects

A 72-poundal piece of furniture converts to a value in stones (us) that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.

72 pdl × 0.0024844721 = 0.178881988 st

Real-world example — Children's height milestones

A 150-poundal-tall child measures a value in stones (us) that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.

150 pdl × 0.0024844721 = 0.3726708084 st

Real-world example — Body height conversion

You enter your height as 180 poundals into an international job or visa application. The form then asks for the same value in stones (us) — converting between these adjacent units is one of the most-used length conversions globally.

180 pdl × 0.0024844721 = 0.44720497 st

Poundal to Stone (US) conversion table

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

Poundal [pdl]Stone (US) [st]
0.012.484472e-5
0.10.0002484472
10.0024844721
20.0049689441
30.0074534162
40.0099378882
50.0124223603
100.0248447206
200.0496894411
300.0745341617
400.0993788822
500.1242236028
1000.2484472056
5001.2422360279
10002.4844720558

Frequently asked questions

How many stones (us) is 1 poundal?
1 poundal equals 0.0024844721 stone (us).
How do I convert poundals to stones (us)?
Multiply the value in poundals by 0.0024844721 to get stones (us).
How do I convert stones (us) back to poundals?
Multiply the value in stones (us) by 402.4999990062, or use the Stone (US) to Poundal converter.
How many stones (us) is 100 poundals?
100 poundals equals 0.2484472056 stones (us), because 100 × 0.0024844721 = 0.2484472056.

Convert Poundal to other weight units

Show all Poundal conversions
Metric / SI (18 units)
Poundal to Attogram (ag) Poundal to Femtogram (fg) Poundal to Picogram (pg) Poundal to Nanogram (ng) Poundal to Microgram (µg) Poundal to Milligram (mg) Poundal to Centigram (cg) Poundal to Decigram (dg) Poundal to Gram (g) Poundal to Dekagram (dag) Poundal to Hectogram (hg) Poundal to Kilogram (kg) Poundal to Quintal (metric) (q) Poundal to Metric Ton (t) Poundal to Gigagram (Gg) Poundal to Teragram (Tg) Poundal to Petagram (Pg) Poundal to Exagram (Eg)
Avoirdupois (15 units)
Poundal to Grain (gr) Poundal to Dram (avoirdupois) (dr) Poundal to Ounce (oz) Poundal to Pound (lb) Poundal to Clove (clove) Poundal to Stone (US) (st) Poundal to Stone (UK) (st) Poundal to Quarter (US) (qr) Poundal to Quarter (UK) (qr) Poundal to Hundredweight (US) (cwt) Poundal to Hundredweight (UK) (cwt) Poundal to Wey (wey) Poundal to Kilopound (kip) (kip) Poundal to Ton (short, US) (sh tn) Poundal to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Poundal to Point (1/100 carat) (pt) Poundal to Carat (metric) (ct) Poundal to Scruple (apothecary) (s ap) Poundal to Pennyweight (dwt) Poundal to Momme (mom) Poundal to Mace (mace) Poundal to Dram (apothecary/troy) (dr ap) Poundal to Troy Ounce (oz t) Poundal to Tael (tael) Poundal to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Poundal to Ratti (ratti) Poundal to Masha (masha) Poundal to Tola (tola) Poundal to Chittack (Chatank) (chittack) Poundal to Seer (Ser) (seer) Poundal to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Poundal to Electron Mass (rest) (me) Poundal to MeV/c2 (MeV/c²) Poundal to Muon Mass (mµ) Poundal to Atomic Mass Unit (u) Poundal to Proton Mass (mp) Poundal to Neutron Mass (mn) Poundal to Deuteron Mass (md) Poundal to Carbon-12 Atom Mass (C-12) Poundal to Planck Mass (mP)
Astronomical (4 units)
Poundal to Lunar Mass (Moon) (M☾) Poundal to Earth's Mass (M⊕) Poundal to Jupiter Mass (MJ) Poundal to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Poundal to Lepton (Biblical Roman) (lepton) Poundal to Quadrans (Biblical Roman) (quadrans) Poundal to Assarion (Biblical Roman) (assarion) Poundal to Gerah (Biblical Hebrew) (gerah) Poundal to Drachma (Biblical Greek) (drachma) Poundal to Denarius (Biblical Roman) (denarius) Poundal to Bekan (Biblical Hebrew) (bekah) Poundal to Didrachma (Biblical Greek) (didrachma) Poundal to Shekel (Biblical Hebrew) (shekel) Poundal to Tetradrachma (Biblical Greek) (tetra) Poundal to Mina (Biblical Greek) (mina) Poundal to Mina (Biblical Hebrew) (mina) Poundal to Talent (Biblical Greek) (talent) Poundal to Talent (Biblical Hebrew) (talent)
Force / Engineering (4 units)
Poundal to Ton (assay) (US) (AT) Poundal to Ton (assay) (UK) (AT) Poundal to Kilogram-force square second/meter (hyl) Poundal to Slug (slug)

Sources & references

Conversion factor (1 pdl = 0.0024844721 st) verified against the following authoritative sources:

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