Mass and Weight · Unit Converter

Convert Ounce to Exagram

Convert ounces to exagrams instantly. 1 ounce = 2.834952e-17 exagram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Exagram to Ounce 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

Ounce

What is a ounce?

The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.

Origin of the ounce

From Latin 'uncia', meaning a twelfth part.

Where it is used

US food portions, postal weights, and boxing weight classes.

When and where it was developed

Standardized as 1/16 of the international pound from 1959.

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.

Ounce to Exagram conversion formula

The relationship between ounces and exagrams:

1 oz = 2.834952e-17 Eg
1 Eg = 3.527396e+16 oz

To convert ounces to exagrams, multiply the value in ounces by 2.834952e-17. To reverse, multiply exagrams by 3.527396e+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 Ounce converter for the reverse direction.

Step-by-step: convert ounces to exagrams

  1. Write down the value in ounces (oz).
  2. Multiply that value by the factor 2.834952e-17.
  3. The product is the equivalent value in exagrams (Eg).
  4. To reverse, multiply the exagram value by 3.527396e+16.

Worked examples

Example 1 — Convert 1 oz to Eg:
1 × 2.834952e-17 = 2.834952e-17 Eg

Example 2 — Convert 100 oz to Eg:
100 × 2.834952e-17 = 2.834952e-15 Eg

Real-world example — Ruler-scale measurements

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

30 oz × 2.834952e-17 = 8.504857e-16 Eg

Real-world example — Hardware-scale dimensions

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

10 oz × 2.834952e-17 = 2.834952e-16 Eg

Real-world example — Postcard and small-object dimensions

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

5 oz × 2.834952e-17 = 1.417476e-16 Eg

Ounce to Exagram conversion table

Standard reference values for converting ounces to exagrams:

Ounce [oz]Exagram [Eg]
0.012.834952e-19
0.12.834952e-18
12.834952e-17
25.669905e-17
38.504857e-17
41.133981e-16
51.417476e-16
102.834952e-16
205.669905e-16
308.504857e-16
401.133981e-15
501.417476e-15
1002.834952e-15
5001.417476e-14
10002.834952e-14

Frequently asked questions

How many exagrams is 1 ounce?
1 ounce equals 2.834952e-17 exagram.
How do I convert ounces to exagrams?
Multiply the value in ounces by 2.834952e-17 to get exagrams.
How do I convert exagrams back to ounces?
Multiply the value in exagrams by 3.527396e+16, or use the Exagram to Ounce converter.
How many exagrams is 100 ounces?
100 ounces equals 2.834952e-15 exagrams, because 100 × 2.834952e-17 = 2.834952e-15.

Convert Ounce to other weight units

Show all Ounce conversions
Metric / SI (18 units)
Ounce to Attogram (ag) Ounce to Femtogram (fg) Ounce to Picogram (pg) Ounce to Nanogram (ng) Ounce to Microgram (µg) Ounce to Milligram (mg) Ounce to Centigram (cg) Ounce to Decigram (dg) Ounce to Gram (g) Ounce to Dekagram (dag) Ounce to Hectogram (hg) Ounce to Kilogram (kg) Ounce to Quintal (metric) (q) Ounce to Metric Ton (t) Ounce to Gigagram (Gg) Ounce to Teragram (Tg) Ounce to Petagram (Pg) Ounce to Exagram (Eg)
Avoirdupois (14 units)
Ounce to Grain (gr) Ounce to Dram (avoirdupois) (dr) Ounce to Pound (lb) Ounce to Clove (clove) Ounce to Stone (US) (st) Ounce to Stone (UK) (st) Ounce to Quarter (US) (qr) Ounce to Quarter (UK) (qr) Ounce to Hundredweight (US) (cwt) Ounce to Hundredweight (UK) (cwt) Ounce to Wey (wey) Ounce to Kilopound (kip) (kip) Ounce to Ton (short, US) (sh tn) Ounce to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Ounce to Point (1/100 carat) (pt) Ounce to Carat (metric) (ct) Ounce to Scruple (apothecary) (s ap) Ounce to Pennyweight (dwt) Ounce to Momme (mom) Ounce to Mace (mace) Ounce to Dram (apothecary/troy) (dr ap) Ounce to Troy Ounce (oz t) Ounce to Tael (tael) Ounce to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Ounce to Ratti (ratti) Ounce to Masha (masha) Ounce to Tola (tola) Ounce to Chittack (Chatank) (chittack) Ounce to Seer (Ser) (seer) Ounce to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Ounce to Electron Mass (rest) (me) Ounce to MeV/c2 (MeV/c²) Ounce to Muon Mass (mµ) Ounce to Atomic Mass Unit (u) Ounce to Proton Mass (mp) Ounce to Neutron Mass (mn) Ounce to Deuteron Mass (md) Ounce to Carbon-12 Atom Mass (C-12) Ounce to Planck Mass (mP)
Astronomical (4 units)
Ounce to Lunar Mass (Moon) (M☾) Ounce to Earth's Mass (M⊕) Ounce to Jupiter Mass (MJ) Ounce to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Ounce to Lepton (Biblical Roman) (lepton) Ounce to Quadrans (Biblical Roman) (quadrans) Ounce to Assarion (Biblical Roman) (assarion) Ounce to Gerah (Biblical Hebrew) (gerah) Ounce to Drachma (Biblical Greek) (drachma) Ounce to Denarius (Biblical Roman) (denarius) Ounce to Bekan (Biblical Hebrew) (bekah) Ounce to Didrachma (Biblical Greek) (didrachma) Ounce to Shekel (Biblical Hebrew) (shekel) Ounce to Tetradrachma (Biblical Greek) (tetra) Ounce to Mina (Biblical Greek) (mina) Ounce to Mina (Biblical Hebrew) (mina) Ounce to Talent (Biblical Greek) (talent) Ounce to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Ounce to Poundal (pdl) Ounce to Ton (assay) (US) (AT) Ounce to Ton (assay) (UK) (AT) Ounce to Kilogram-force square second/meter (hyl) Ounce to Slug (slug)

Sources & references

Conversion factor (1 oz = 2.834952e-17 Eg) verified against the following authoritative sources:

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