Mass and Weight · Unit Converter

Convert Poundal to Exagram

Convert poundals to exagrams instantly. 1 poundal = 1.408672e-17 exagram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Exagram 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 June 10, 2026 Last reviewed June 10, 2026 Updated June 10, 2026

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.

Metric / SI

Exagram

What is a exagram?

An exagram (Eg) equals 10^15 kilograms, or one quintillion grams.

Origin of the exagram

From the SI prefix 'exa-' (from Greek 'hex', six, denoting the sixth power of 1000).

Where it is used

Confined to planetary- and atmospheric-scale mass discussions; never used in daily measurement.

When and where it was developed

The exa- prefix was adopted by the General Conference on Weights and Measures (CGPM) in 1975.

Poundal to Exagram conversion formula

The relationship between poundals and exagrams:

1 pdl = 1.408672e-17 Eg

1 Eg = 7.098885e+16 pdl

To convert poundals to exagrams, multiply the value in poundals by 1.408672e-17. To reverse, multiply exagrams by 7.098885e+16.

How to use this converter

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

Step-by-step: convert poundals to exagrams

Write down the value in poundals (pdl).
Multiply that value by the factor 1.408672e-17.
The product is the equivalent value in exagrams (Eg).
To reverse, multiply the exagram value by 7.098885e+16.

Worked examples

Example 1 — Convert 1 pdl to Eg:
1 × 1.408672e-17 = 1.408672e-17 Eg

Example 2 — Convert 100 pdl to Eg:
100 × 1.408672e-17 = 1.408672e-15 Eg

Real-world example — Ruler-scale measurements

A 30-poundal school ruler converts cleanly to exagrams — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 pdl × 1.408672e-17 = 4.226016e-16 Eg

Real-world example — Hardware-scale dimensions

A 10-poundal fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between poundals and exagrams daily when mixing metric and imperial tools.

10 pdl × 1.408672e-17 = 1.408672e-16 Eg

Real-world example — Postcard and small-object dimensions

A postcard is about 5 poundals wide. Converting to exagrams is essential for international postal addressing forms that ask for dimensions in different units across countries.

5 pdl × 1.408672e-17 = 7.04336e-17 Eg

Poundal to Exagram conversion table

Standard reference values for converting poundals to exagrams:

Poundal [pdl]	Exagram [Eg]
0.01	1.408672e-19
0.1	1.408672e-18
1	1.408672e-17
2	2.817344e-17
3	4.226016e-17
4	5.634688e-17
5	7.04336e-17
10	1.408672e-16
20	2.817344e-16
30	4.226016e-16
40	5.634688e-16
50	7.04336e-16
100	1.408672e-15
500	7.04336e-15
1000	1.408672e-14

Frequently asked questions

How many exagrams is 1 poundal?

1 poundal equals 1.408672e-17 exagram.

How do I convert poundals to exagrams?

Multiply the value in poundals by 1.408672e-17 to get exagrams.

How do I convert exagrams back to poundals?

Multiply the value in exagrams by 7.098885e+16, or use the Exagram to Poundal converter.

How many exagrams is 100 poundals?

100 poundals equals 1.408672e-15 exagrams, because 100 × 1.408672e-17 = 1.408672e-15.

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 = 1.408672e-17 Eg) verified against the following authoritative sources:

BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.

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