Pt 34.783 Pd 31.832 Rh 147.893 Au 77.782 Ag 1.009
golden stones on scales on marble surface and blac 2021 08 31 03 39 06 utc@2x

Simple calculator to convert weight units like Carat, gram, pennyweight, ounce, troy ounce, pound and  kilogram which are usful in Precious Metal bussines world


Understanding Pennyweights: A Quick Guide

Pennyweights, often abbreviated as “dwt,” are a unit of mass commonly used in the jewelry and precious metals industry. While they may sound antiquated, pennyweights remain relevant today for measuring the weight of precious metals, particularly gold and silver.

One pennyweight is equivalent to 1/20th of a troy ounce, which means there are 20 pennyweights in a troy ounce. In the metric system, this translates to approximately 1.555 grams per pennyweight.

Jewelers and bullion dealers often use pennyweights because they provide a more precise measurement for small quantities of precious metals compared to standard ounces. This level of accuracy is crucial when determining the value and purity of gold and silver items.

When buying or selling gold or silver jewelry, coins, or bullion, you may encounter prices quoted in pennyweights. Understanding this unit of measurement is essential for ensuring fair transactions and making informed decisions in the precious metals market.

In summary, pennyweights play a vital role in the assessment and trade of precious metals, providing a precise measurement that is widely recognized and used throughout the industry. Whether you’re a seasoned investor or a newcomer to the world of precious metals,


The difference between “oz” and “toz” lies in the unit of measurement used for weighing precious metals.

  1. Oz (Ounce): “Oz” stands for “ounce,” which is a standard unit of weight in both the avoirdupois and troy systems of measurement. In the avoirdupois system (commonly used in the United States), an ounce is equal to approximately 28.35 grams. However, in the troy system (used primarily for precious metals), an ounce, known as a troy ounce, is slightly heavier, equal to about 31.1035 grams.

  2. Toz (Troy Ounce): “Toz” stands for “troy ounce,” which is specifically used to measure precious metals like gold, silver, platinum, and palladium. Unlike the standard ounce, a troy ounce is based on the troy system of measurement and weighs approximately 31.1035 grams. This unit is commonly used in the precious metals industry worldwide.

In summary, while both “oz” and “toz” refer to ounces, “oz” generally denotes the avoirdupois ounce used for everyday items, while “toz” specifically refers to the troy ounce used for weighing precious metals. It’s essential to understand this difference when buying, selling, or investing in precious metals to ensure accurate measurements and transactions.

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