Pennyweight to Troy Ounce Converter

Mass Converter

26 units available

Decimals:

From

To

0.05

1 dwt = 0.05 oz t

Formula:

oz t = dwt × 0.05

With your value: 1 dwt = 0.05 oz t

How big is that?

Everyday references on a logarithmic scale, all expressed in pennyweight so you can sanity-check the result.

Paperclip (1/1.6 your value)0.643 dwt

Your value1.00 dwt

AA battery (15× your value)15.4 dwt

Can of soda (2.5e+2× your value)251 dwt

Bag of sugar (6.4e+2× your value)643 dwt

House cat (2.9e+3× your value)2.89e+3 dwt

Other Pennyweight to Troy Ounce conversions

2 dwt to oz t 3 dwt to oz t 4 dwt to oz t 5 dwt to oz t 6 dwt to oz t 7 dwt to oz t 8 dwt to oz t

Pennyweight to Troy Ounce Conversion Table

Pennyweight (dwt)	Troy Ounce (oz t)
0.5	0.025
1	0.05
2	0.1
5	0.25
10	0.5
15	0.75
20	1
25	1.25
50	2.5
100	5
250	12.5
500	25
1000	50

Troy Ounce to Pennyweight Conversion Table

Troy Ounce (oz t)	Pennyweight (dwt)
0.5	10
1	20
2	40
5	100
10	200
15	300
20	400
25	500
50	1,000
100	2,000
250	5,000
500	10,000
1000	20,000

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

Exact conversion

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

Troy Ounce (oz t)

Mass

Exact conversion

1 troy ounce = 480 grains = 0.031 103 476 8 kg exactly. Used for precious metals only.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Pennyweight to Troy Ounce

To convert from Pennyweight (dwt) to Troy Ounce (oz t), multiply the value by 0.05.

Formula: oz t = dwt × 0.05

Reverse: dwt = oz t × 20

Step-by-Step Example

Start with your value in Pennyweight. For example: 5 dwt
Multiply by the conversion factor: 5 x 0.05
The result is: 0.25 oz t

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 Troy Ounce

The troy ounce equals approximately 31.1 grams and is used for weighing precious metals like gold, silver, and platinum.

Common uses: gold trading, silver markets, precious metals.

Frequently Asked Questions

How many Troy Ounce are in 1 Pennyweight?

There are exactly 0.05 Troy Ounce in 1 Pennyweight. This means the conversion factor from Pennyweight to Troy Ounce is 0.05.

What is the formula to convert Pennyweight to Troy Ounce?

The formula to convert Pennyweight to Troy Ounce is: oz t = dwt × 0.05. For example, to convert 10 Pennyweight to Troy Ounce, you would multiply 10 by 0.05.

What is a Pennyweight?