Convert Pennyweight to Dekagram
Convert pennyweights to dekagrams instantly. 1 pennyweight = 0.15551738 dekagram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dekagram 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.
Dekagram
A dekagram (dag) equals 0.01 kilogram, or 10 grams.
From the SI prefix 'deka-' (from Greek 'deka', ten).
Widely used in Central and Eastern European cooking and shops (dag/dkg).
Part of the original metric system introduced in 1795.
Pennyweight to Dekagram conversion formula
The relationship between pennyweights and dekagrams:
To convert pennyweights to dekagrams, multiply the value in pennyweights by 0.15551738. To reverse, multiply dekagrams by 6.4301494791.
How to use this converter
Type a value into the calculator. The result in dekagrams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dekagram to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to dekagrams
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 0.15551738.
- The product is the equivalent value in dekagrams (dag).
- To reverse, multiply the dekagram value by 6.4301494791.
Worked examples
Example 1 — Convert 1 dwt to dag:
1 × 0.15551738 = 0.15551738 dag
Example 2 — Convert 100 dwt to dag:
100 × 0.15551738 = 15.551738 dag
Real-world example — Hardware-scale dimensions
A 10-pennyweight fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between pennyweights and dekagrams daily when mixing metric and imperial tools.
10 dwt × 0.15551738 = 1.5551738 dag
Real-world example — Postcard and small-object dimensions
A postcard is about 5 pennyweights wide. Converting to dekagrams is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 dwt × 0.15551738 = 0.7775869 dag
Real-world example — Ruler-scale measurements
A 30-pennyweight school ruler converts cleanly to dekagrams — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 dwt × 0.15551738 = 4.6655214 dag
Pennyweight to Dekagram conversion table
Standard reference values for converting pennyweights to dekagrams:
| Pennyweight [dwt] | Dekagram [dag] |
|---|---|
| 0.01 | 0.0015551738 |
| 0.1 | 0.015551738 |
| 1 | 0.15551738 |
| 2 | 0.31103476 |
| 3 | 0.46655214 |
| 4 | 0.62206952 |
| 5 | 0.7775869 |
| 10 | 1.5551738 |
| 20 | 3.1103476 |
| 30 | 4.6655214 |
| 40 | 6.2206952 |
| 50 | 7.775869 |
| 100 | 15.551738 |
| 500 | 77.75869 |
| 1000 | 155.51738 |
Frequently asked questions
How many dekagrams is 1 pennyweight?
How do I convert pennyweights to dekagrams?
How do I convert dekagrams back to pennyweights?
How many dekagrams is 100 pennyweights?
Popular weight unit conversions
Convert Pennyweight to other weight units
Show all Pennyweight conversions
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 = 0.15551738 dag) 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.