Mass and Weight · Unit Converter

Convert Ton (assay) (US) to Exagram

Convert tons (assay) (us) to exagrams instantly. 1 ton (assay) (us) = 2.916667e-17 exagram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Exagram to Ton (assay) (US) 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

Ton (assay) (US)

What is a ton (assay) (us)?

The assay ton (US) equals about 29.167 grams, a mining-assay convenience unit.

Origin of the ton (assay) (us)

Devised so an assay sample's metal in milligrams reads as troy ounces per short ton.

Where it is used

Ore assaying and metallurgy.

When and where it was developed

Adopted in assay laboratories to simplify ore-grade calculation.

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.

Ton (assay) (US) to Exagram conversion formula

The relationship between tons (assay) (us) and exagrams:

1 AT = 2.916667e-17 Eg
1 Eg = 3.428571e+16 AT

To convert tons (assay) (us) to exagrams, multiply the value in tons (assay) (us) by 2.916667e-17. To reverse, multiply exagrams by 3.428571e+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 Ton (assay) (US) converter for the reverse direction.

Step-by-step: convert tons (assay) (us) to exagrams

  1. Write down the value in tons (assay) (us) (AT).
  2. Multiply that value by the factor 2.916667e-17.
  3. The product is the equivalent value in exagrams (Eg).
  4. To reverse, multiply the exagram value by 3.428571e+16.

Worked examples

Example 1 — Convert 1 AT to Eg:
1 × 2.916667e-17 = 2.916667e-17 Eg

Example 2 — Convert 100 AT to Eg:
100 × 2.916667e-17 = 2.916667e-15 Eg

Real-world example — Ruler-scale measurements

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

30 AT × 2.916667e-17 = 8.750001e-16 Eg

Real-world example — Hardware-scale dimensions

A 10-ton (assay) (us) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between tons (assay) (us) and exagrams daily when mixing metric and imperial tools.

10 AT × 2.916667e-17 = 2.916667e-16 Eg

Real-world example — Postcard and small-object dimensions

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

5 AT × 2.916667e-17 = 1.458333e-16 Eg

Ton (assay) (US) to Exagram conversion table

Standard reference values for converting tons (assay) (us) to exagrams:

Ton (assay) (US) [AT]Exagram [Eg]
0.012.916667e-19
0.12.916667e-18
12.916667e-17
25.833334e-17
38.750001e-17
41.166667e-16
51.458333e-16
102.916667e-16
205.833334e-16
308.750001e-16
401.166667e-15
501.458333e-15
1002.916667e-15
5001.458333e-14
10002.916667e-14

Frequently asked questions

How many exagrams is 1 ton (assay) (us)?
1 ton (assay) (us) equals 2.916667e-17 exagram.
How do I convert tons (assay) (us) to exagrams?
Multiply the value in tons (assay) (us) by 2.916667e-17 to get exagrams.
How do I convert exagrams back to tons (assay) (us)?
Multiply the value in exagrams by 3.428571e+16, or use the Exagram to Ton (assay) (US) converter.
How many exagrams is 100 tons (assay) (us)?
100 tons (assay) (us) equals 2.916667e-15 exagrams, because 100 × 2.916667e-17 = 2.916667e-15.

Convert Ton (assay) (US) to other weight units

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

Sources & references

Conversion factor (1 AT = 2.916667e-17 Eg) verified against the following authoritative sources:

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