Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Troy Weight

Weight unit for preciuos metals like gold and silver.

Troy weight is a system of units of mass used for precious metals.

  • 1 ounce Troy = 20 pennyweights = 480 grains = 31.103 grams
  • 1 pennyweight = 24 grains
  • 1 carat (used when weighing diamonds) = 3.086 grains = 200 mg = 0.2 10-3 kg = 1/5000 kg
  • 1 grain Troy = 1 grain avoirdupois = 1 grain apothecaries' weight = 0.0648 gram
  • 1.0000 lb = 14.5833 Troy Oz = 453.5917 grams

Note that a carat is a unit of weight used to measure the size of gemstones like diamonds. A karat is a measurement indicating the proportion of gold in an alloy.

Related Topics

  • Miscellaneous

    Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

Related Documents


Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .


This page can be cited as

  • The Engineering ToolBox (2010). Troy Weight. [online] Available at: [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter