Mass and Weight · Unit Converter

Convert Exagram to Pound (troy/apothecary)

Convert exagrams to pounds (troy/apothecary) instantly. 1 exagram = 2.679229e+15 pound (troy/apothecary) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pound (troy/apothecary) to Exagram 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

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.

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Historical pricing of precious metals; now largely superseded by the troy ounce.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

Exagram to Pound (troy/apothecary) conversion formula

The relationship between exagrams and pounds (troy/apothecary):

1 Eg = 2.679229e+15 lb t

1 lb t = 3.732417e-16 Eg

To convert exagrams to pounds (troy/apothecary), multiply the value in exagrams by 2.679229e+15. To reverse, multiply pounds (troy/apothecary) by 3.732417e-16.

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 Exagram converter for the reverse direction.

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

Write down the value in exagrams (Eg).
Multiply that value by the factor 2.679229e+15.
The product is the equivalent value in pounds (troy/apothecary) (lb t).
To reverse, multiply the pound (troy/apothecary) value by 3.732417e-16.

Worked examples

Example 1 — Convert 1 Eg to lb t:
1 × 2.679229e+15 = 2.679229e+15 lb t

Example 2 — Convert 100 Eg to lb t:
100 × 2.679229e+15 = 2.679229e+17 lb t

Exagram to Pound (troy/apothecary) conversion table

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

Exagram [Eg]	Pound (troy/apothecary) [lb t]
0.01	2.679229e+13
0.1	2.679229e+14
1	2.679229e+15
2	5.358458e+15
3	8.037687e+15
4	1.071692e+16
5	1.339614e+16
10	2.679229e+16
20	5.358458e+16
30	8.037687e+16
40	1.071692e+17
50	1.339614e+17
100	2.679229e+17
500	1.339614e+18
1000	2.679229e+18

Frequently asked questions

How many pounds (troy/apothecary) is 1 exagram?

1 exagram equals 2.679229e+15 pound (troy/apothecary).

How do I convert exagrams to pounds (troy/apothecary)?

Multiply the value in exagrams by 2.679229e+15 to get pounds (troy/apothecary).

How do I convert pounds (troy/apothecary) back to exagrams?

Multiply the value in pounds (troy/apothecary) by 3.732417e-16, or use the Pound (troy/apothecary) to Exagram converter.

How many pounds (troy/apothecary) is 100 exagrams?

100 exagrams equals 2.679229e+17 pounds (troy/apothecary), because 100 × 2.679229e+15 = 2.679229e+17.

Convert Exagram to other weight units

Show all Exagram conversions

Metric / SI (17 units)

Exagram to Attogram (ag) Exagram to Femtogram (fg) Exagram to Picogram (pg) Exagram to Nanogram (ng) Exagram to Microgram (µg) Exagram to Milligram (mg) Exagram to Centigram (cg) Exagram to Decigram (dg) Exagram to Gram (g) Exagram to Dekagram (dag) Exagram to Hectogram (hg) Exagram to Kilogram (kg) Exagram to Quintal (metric) (q) Exagram to Metric Ton (t) Exagram to Gigagram (Gg) Exagram to Teragram (Tg) Exagram to Petagram (Pg)

Avoirdupois (15 units)

Exagram to Grain (gr) Exagram to Dram (avoirdupois) (dr) Exagram to Ounce (oz) Exagram to Pound (lb) Exagram to Clove (clove) Exagram to Stone (US) (st) Exagram to Stone (UK) (st) Exagram to Quarter (US) (qr) Exagram to Quarter (UK) (qr) Exagram to Hundredweight (US) (cwt) Exagram to Hundredweight (UK) (cwt) Exagram to Wey (wey) Exagram to Kilopound (kip) (kip) Exagram to Ton (short, US) (sh tn) Exagram to Ton (long, UK) (long tn)

Troy & Apothecary (10 units)

Exagram to Point (1/100 carat) (pt) Exagram to Carat (metric) (ct) Exagram to Scruple (apothecary) (s ap) Exagram to Pennyweight (dwt) Exagram to Momme (mom) Exagram to Mace (mace) Exagram to Dram (apothecary/troy) (dr ap) Exagram to Troy Ounce (oz t) Exagram to Tael (tael) Exagram to Pound (troy/apothecary) (lb t)

Indian / South Asian (6 units)

Exagram to Ratti (ratti) Exagram to Masha (masha) Exagram to Tola (tola) Exagram to Chittack (Chatank) (chittack) Exagram to Seer (Ser) (seer) Exagram to Maund (Mann) (maund)

Scientific / Atomic (9 units)

Exagram to Electron Mass (rest) (me) Exagram to MeV/c2 (MeV/c²) Exagram to Muon Mass (mµ) Exagram to Atomic Mass Unit (u) Exagram to Proton Mass (mp) Exagram to Neutron Mass (mn) Exagram to Deuteron Mass (md) Exagram to Carbon-12 Atom Mass (C-12) Exagram to Planck Mass (mP)

Astronomical (4 units)

Exagram to Lunar Mass (Moon) (M☾) Exagram to Earth's Mass (M⊕) Exagram to Jupiter Mass (MJ) Exagram to Sun's Mass (M☉)

Biblical / Ancient (14 units)

Exagram to Lepton (Biblical Roman) (lepton) Exagram to Quadrans (Biblical Roman) (quadrans) Exagram to Assarion (Biblical Roman) (assarion) Exagram to Gerah (Biblical Hebrew) (gerah) Exagram to Drachma (Biblical Greek) (drachma) Exagram to Denarius (Biblical Roman) (denarius) Exagram to Bekan (Biblical Hebrew) (bekah) Exagram to Didrachma (Biblical Greek) (didrachma) Exagram to Shekel (Biblical Hebrew) (shekel) Exagram to Tetradrachma (Biblical Greek) (tetra) Exagram to Mina (Biblical Greek) (mina) Exagram to Mina (Biblical Hebrew) (mina) Exagram to Talent (Biblical Greek) (talent) Exagram to Talent (Biblical Hebrew) (talent)

Force / Engineering (5 units)

Exagram to Poundal (pdl) Exagram to Ton (assay) (US) (AT) Exagram to Ton (assay) (UK) (AT) Exagram to Kilogram-force square second/meter (hyl) Exagram to Slug (slug)

Sources & references

Conversion factor (1 Eg = 2.679229e+15 lb t) 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.