Pennyweight to Ounce Conversion Calculator: Free Online Tool
Convert pennyweights to ounces with our free online weight converter.
Pennyweight to Ounce Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Pennyweight).
- The converted value in Ounce will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Pennyweight to Ounce
Converting Pennyweight to Ounce involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Pennyweight = 0.0548571 ouncesExample Calculation:
Convert 5 pennyweights: 5 × 0.0548571 = 0.274286 ounces
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Pennyweight and a Ounce?
The pennyweight (dwt) is a unit of mass in the troy weight system. It is equal to 1/20 of a troy ounce, or 24 grains. It is equivalent to exactly 1.55517384 grams.
The ounce (oz) is a unit of mass used in the British imperial and United States customary systems of measurement. The most common type today is the international avoirdupois ounce, defined as exactly 1/16 of an avoirdupois pound, or approximately 28.35 grams.
Note: The Pennyweight is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Ounce belongs to the imperial/US customary system.
History of the Pennyweight and Ounce
Historically, the pennyweight was the weight of a silver penny in medieval England. It became part of the standardized troy system used for precious metals and coinage.
The term "ounce" derives from the Roman "uncia", which was one-twelfth of the Roman pound. Its value varied throughout history and regions. The avoirdupois ounce became standardized in the English-speaking world for general trade.
Common Uses for pennyweights and ounces
Explore the typical applications for both Pennyweight (imperial/US) and Ounce (imperial/US) to understand their common contexts.
Common Uses for pennyweights
- Jewelry: Used by jewelers and goldsmiths for measuring quantities of precious metals during crafting and valuation.
- Dentistry: Sometimes used for measuring dental alloys.
- Ammunition: Historically used for specifying the weight of components in ammunition.
Common Uses for ounces
- Cooking & Recipes: Standard unit in the US for measuring food ingredients like flour, sugar, spices, and non-liquid items in recipes.
- Packaged Foods: Used for labeling the net weight of many packaged food products (e.g., cereal boxes, canned goods, snacks).
- Postal Services: Used for determining the weight and cost of letters and small parcels, especially in the US.
- Deli & Groceries: Common unit for measuring small portions of items like cheese, deli meats, and specialty foods.
- Precious Metals: Often used to measure the weight of gold, silver, and other precious metals in jewelry and bullion.
Frequently Asked Questions
Questions About Pennyweight (dwt)
How many pennyweights are in a troy ounce?
There are 20 pennyweights (dwt) in 1 troy ounce (oz t).
How many grains are in a pennyweight?
There are 24 grains (gr) in 1 pennyweight (dwt).
How many grams are in a pennyweight?
There are exactly 1.55517384 grams (g) in 1 pennyweight (dwt).
About Ounce (oz)
How many ounces are in a pound?
There are 16 avoirdupois ounces (oz) in 1 pound (lb).
Is an ounce the same as a fluid ounce?
No. The ounce (oz) measures mass/weight, while the fluid ounce (fl oz) measures volume.
Where is the ounce commonly used?
It is primarily used in the United States for everyday measurements, and to some extent in the UK and Canada, though metric units are more prevalent globally.
Conversion Table: Pennyweight to Ounce
| Pennyweight (dwt) | Ounce (oz) |
|---|---|
| 1 | 0.055 |
| 5 | 0.274 |
| 10 | 0.549 |
| 25 | 1.371 |
| 50 | 2.743 |
| 100 | 5.486 |
| 500 | 27.429 |
| 1,000 | 54.857 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Milligram (mg)
- Pound (lb)
- Stone (st)
- Ton (metric) (t)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Carat (ct)
- Slug (sl)
- Troy Ounce (oz t)
- Grain (gr)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)