Pennyweight to Ounce Converter
Convert Pennyweight (dwt) to Ounce (oz) instantly. 1 dwt = 0.054857 oz.
Mass Converter
26 units available
1 dwt = 0.054857 oz
Formula:
oz = dwt × 0.0548571429With your value: 1 dwt = 0.05485714 oz
How big is that?
Everyday references on a logarithmic scale, all expressed in pennyweight so you can sanity-check the result.
Other Pennyweight to Ounce conversions
Pennyweight to Ounce Conversion Table
| Pennyweight (dwt) | Ounce (oz) |
|---|---|
| 0.5 | 0.027429 |
| 1 | 0.054857 |
| 2 | 0.109714 |
| 5 | 0.274286 |
| 10 | 0.548571 |
| 15 | 0.822857 |
| 20 | 1.097143 |
| 25 | 1.371429 |
| 50 | 2.742857 |
| 100 | 5.485714 |
| 250 | 13.714286 |
| 500 | 27.428571 |
| 1000 | 54.857143 |
Ounce to Pennyweight Conversion Table
| Ounce (oz) | Pennyweight (dwt) |
|---|---|
| 0.5 | 9.114583 |
| 1 | 18.229167 |
| 2 | 36.458333 |
| 5 | 91.145833 |
| 10 | 182.291667 |
| 15 | 273.4375 |
| 20 | 364.583333 |
| 25 | 455.729167 |
| 50 | 911.458333 |
| 100 | 1,822.916667 |
| 250 | 4,557.291667 |
| 500 | 9,114.583333 |
| 1000 | 18,229.166667 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Pennyweight (dwt)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Ounce (oz)
Mass
1 avoirdupois ounce = 1/16 lb = 0.028 349 523 125 kg exactly.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
How to Convert Pennyweight to Ounce
To convert from Pennyweight (dwt) to Ounce (oz), multiply the value by 0.0548571429.
Formula: oz = dwt × 0.0548571429
Reverse: dwt = oz × 18.2291666667
Step-by-Step Example
- Start with your value in Pennyweight. For example: 5 dwt
- Multiply by the conversion factor: 5 x 0.0548571429
- The result is: 0.274286 oz
About Pennyweight
The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.
Common uses: jewellery trade, gold scrap, assaying.
About Ounce
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
Common uses: food portions, postal mail, precious metals.
Frequently Asked Questions
How many Ounce are in 1 Pennyweight?
There are exactly 0.0548571429 Ounce in 1 Pennyweight. This means the conversion factor from Pennyweight to Ounce is 0.0548571429.
What is the formula to convert Pennyweight to Ounce?
The formula to convert Pennyweight to Ounce is: oz = dwt × 0.0548571429. For example, to convert 10 Pennyweight to Ounce, you would multiply 10 by 0.0548571429.
What is a Pennyweight?
The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.
What is a Ounce?
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
What are the common uses of Pennyweight?
The Pennyweight is commonly used in jewellery trade, gold scrap, assaying.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Pennyweight to Ounce converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/pennyweight-to-ounce