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Unit Guide

Ounce Guide

Use this page to understand ounce, compare it with nearby weight units, and open the conversion pages that are most useful next.

Unit Guide
Ounce

The ounce is usually written as oz. This guide gives a quick overview of the unit and points you to the conversions people use most often.

Symbol: oz System: US customary Cluster: Mainstream
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About Ounce

Definition. The avoirdupois ounce (oz) is a unit of mass equal to one sixteenth of a pound, or exactly 28.349523125 grams.

Common Uses. Ounces are widely used for packaged foods, kitchen measurements, small parcels, retail products, and many small everyday weights in US-based systems.

Where People Use Ounce. Use this guide to see where ounce fits, then open the conversion page that matches the number you need to check.

Conversion Factors.

  • 1 ounce (oz) = 28.349523125 grams (g)
  • 1 ounce (oz) = 0.0625 pounds (lb)
  • 16 ounces (oz) = 1 pound (lb)
  • 1 kilogram (kg) is about 35.274 ounces (oz)
  • 1 troy ounce (ozt) = 31.1034768 grams (g)
  • 1 ounce (oz) is about 141.7476 carats (ct)

Comparisons. 1 ounce is roughly the weight of a slice of bread or several coins, so it works well for smaller consumer and kitchen quantities.

Note. Enter a value directly into the converter on this page if you want a fast result before moving into a more specific ounce pair page.

Popular Ounce Conversions

Start with these if you want the most common ways people convert to or from ounce.

Ounce To Kilogram Converter Ounce To Gram Converter Ounce To Milligram Converter Ounce To Metric Ton Converter Ounce To Long Ton Converter Ounce To Short Ton Converter Ounce To Pound Converter Ounce To Carat Converter Ounce To Atomic Mass Unit Converter Kilogram To Ounce Converter Gram To Ounce Converter Milligram To Ounce Converter Metric Ton To Ounce Converter Long Ton To Ounce Converter Short Ton To Ounce Converter Pound To Ounce Converter Carat To Ounce Converter Atomic Mass Unit To Ounce Converter

Related Weight Units

These guides help you compare ounce with nearby weight units before choosing the conversion you need.

Kilogram Guide Gram Guide Metric Ton Guide Long Ton Guide Short Ton Guide Pound Guide

FAQ

What is ounce used for?

Ounces are widely used for packaged foods, kitchen measurements, small parcels, retail products, and many small everyday weights in US-based systems.

How do I convert ounce into another weight unit?

Use the live converter on this page for a quick result, or open one of the pair pages below if you want formula notes and a reference table.

Why keep a separate ounce guide page?

The unit guide gives context about the unit itself, while pair pages focus on one conversion path at a time. Keeping both helps the site feel easier to browse.

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