Convert Pennyweight to Hectogram
Convert pennyweights to hectograms instantly. 1 pennyweight = 0.015551738 hectogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Hectogram 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.
Hectogram
A hectogram (hg) equals 0.1 kilogram, or 100 grams.
From the SI prefix 'hecto-' (from Greek 'hekaton', hundred).
Common in continental European food retail, especially Italy ('etto').
The hecto- prefix dates to the original metric system of 1795.
Pennyweight to Hectogram conversion formula
The relationship between pennyweights and hectograms:
To convert pennyweights to hectograms, multiply the value in pennyweights by 0.015551738. To reverse, multiply hectograms by 64.3014947911.
How to use this converter
Type a value into the calculator. The result in hectograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Hectogram to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to hectograms
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 0.015551738.
- The product is the equivalent value in hectograms (hg).
- To reverse, multiply the hectogram value by 64.3014947911.
Worked examples
Example 1 — Convert 1 dwt to hg:
1 × 0.015551738 = 0.015551738 hg
Example 2 — Convert 100 dwt to hg:
100 × 0.015551738 = 1.5551738 hg
Real-world example — Children's height milestones
A 150-pennyweight-tall child measures a value in hectograms that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 dwt × 0.015551738 = 2.3327607 hg
Real-world example — Body height conversion
You enter your height as 180 pennyweights into an international job or visa application. The form then asks for the same value in hectograms — converting between these adjacent units is one of the most-used length conversions globally.
180 dwt × 0.015551738 = 2.79931284 hg
Real-world example — Furniture and large objects
A 72-pennyweight piece of furniture converts to a value in hectograms that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 dwt × 0.015551738 = 1.119725136 hg
Pennyweight to Hectogram conversion table
Standard reference values for converting pennyweights to hectograms:
| Pennyweight [dwt] | Hectogram [hg] |
|---|---|
| 0.01 | 0.0001555174 |
| 0.1 | 0.0015551738 |
| 1 | 0.015551738 |
| 2 | 0.031103476 |
| 3 | 0.046655214 |
| 4 | 0.062206952 |
| 5 | 0.07775869 |
| 10 | 0.15551738 |
| 20 | 0.31103476 |
| 30 | 0.46655214 |
| 40 | 0.62206952 |
| 50 | 0.7775869 |
| 100 | 1.5551738 |
| 500 | 7.775869 |
| 1000 | 15.551738 |
Frequently asked questions
How many hectograms is 1 pennyweight?
How do I convert pennyweights to hectograms?
How do I convert hectograms back to pennyweights?
How many hectograms 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 = 0.015551738 hg) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.