Convert Pennyweight to Decigram
Convert pennyweights to decigrams instantly. 1 pennyweight = 15.551738 decigram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Decigram to Pennyweight converter for the reverse conversion.
Units explained
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.
Decigram
A decigram (dg) equals 0.0001 kilogram, or 0.1 gram.
From the SI prefix 'deci-' (from Latin 'decimus', tenth).
Occasional laboratory and pharmacy use.
Part of the original metric system of 1795.
Pennyweight to Decigram conversion formula
The relationship between pennyweights and decigrams:
To convert pennyweights to decigrams, multiply the value in pennyweights by 15.551738. To reverse, multiply decigrams by 0.0643014948.
How to use this converter
Type a value into the calculator. The result in decigrams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Decigram to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to decigrams
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 15.551738.
- The product is the equivalent value in decigrams (dg).
- To reverse, multiply the decigram value by 0.0643014948.
Worked examples
Example 1 — Convert 1 dwt to dg:
1 × 15.551738 = 15.551738 dg
Example 2 — Convert 100 dwt to dg:
100 × 15.551738 = 1555.1738 dg
Real-world example — Adjacent small-scale precision
One pennyweight equals 1,000 decigrams — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).
1 dwt × 15.551738 = 15.551738 dg
Real-world example — Adjacent metric sub-units
One pennyweight equals 1,000 decigrams. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 dwt × 15.551738 = 15.551738 dg
Pennyweight to Decigram conversion table
Standard reference values for converting pennyweights to decigrams:
| Pennyweight [dwt] | Decigram [dg] |
|---|---|
| 0.01 | 0.15551738 |
| 0.1 | 1.5551738 |
| 1 | 15.551738 |
| 2 | 31.103476 |
| 3 | 46.655214 |
| 4 | 62.206952 |
| 5 | 77.75869 |
| 10 | 155.51738 |
| 20 | 311.03476 |
| 30 | 466.55214 |
| 40 | 622.06952 |
| 50 | 777.5869 |
| 100 | 1555.1738 |
| 500 | 7775.869 |
| 1000 | 15551.738 |
Frequently asked questions
How many decigrams is 1 pennyweight?
How do I convert pennyweights to decigrams?
How do I convert decigrams back to pennyweights?
How many decigrams is 100 pennyweights?
Popular weight unit conversions
Convert Pennyweight to other weight units
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 dwt = 15.551738 dg) 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.