Convert Exagram to Pennyweight
Convert exagrams to pennyweights instantly. 1 exagram = 6.430149e+17 pennyweight — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pennyweight to Exagram converter for the reverse conversion.
Units explained
Exagram
An exagram (Eg) equals 10^15 kilograms, or one quintillion grams.
From the SI prefix 'exa-' (from Greek 'hex', six, denoting the sixth power of 1000).
Confined to planetary- and atmospheric-scale mass discussions; never used in daily measurement.
The exa- prefix was adopted by the General Conference on Weights and Measures (CGPM) in 1975.
Pennyweight
The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).
From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.
Jewelry making and precious-metal scrap valuation in the US.
Derived from the medieval English coinage system.
Exagram to Pennyweight conversion formula
The relationship between exagrams and pennyweights:
To convert exagrams to pennyweights, multiply the value in exagrams by 6.430149e+17. To reverse, multiply pennyweights by 1.555174e-18.
How to use this converter
Type a value into the calculator. The result in pennyweights updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Pennyweight to Exagram converter for the reverse direction.
Step-by-step: convert exagrams to pennyweights
- Write down the value in exagrams (Eg).
- Multiply that value by the factor 6.430149e+17.
- The product is the equivalent value in pennyweights (dwt).
- To reverse, multiply the pennyweight value by 1.555174e-18.
Worked examples
Example 1 — Convert 1 Eg to dwt:
1 × 6.430149e+17 = 6.430149e+17 dwt
Example 2 — Convert 100 Eg to dwt:
100 × 6.430149e+17 = 6.430149e+19 dwt
Exagram to Pennyweight conversion table
Standard reference values for converting exagrams to pennyweights:
| Exagram [Eg] | Pennyweight [dwt] |
|---|---|
| 0.01 | 6.430149e+15 |
| 0.1 | 6.430149e+16 |
| 1 | 6.430149e+17 |
| 2 | 1.28603e+18 |
| 3 | 1.929045e+18 |
| 4 | 2.57206e+18 |
| 5 | 3.215075e+18 |
| 10 | 6.430149e+18 |
| 20 | 1.28603e+19 |
| 30 | 1.929045e+19 |
| 40 | 2.57206e+19 |
| 50 | 3.215075e+19 |
| 100 | 6.430149e+19 |
| 500 | 3.215075e+20 |
| 1000 | 6.430149e+20 |
Frequently asked questions
How many pennyweights is 1 exagram?
How do I convert exagrams to pennyweights?
How do I convert pennyweights back to exagrams?
How many pennyweights is 100 exagrams?
Popular weight unit conversions
Convert Exagram to other weight units
Show all Exagram conversions
Metric / SI (17 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 Eg = 6.430149e+17 dwt) 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.