{"id":6110,"date":"2026-02-21T02:21:59","date_gmt":"2026-02-21T02:21:59","guid":{"rendered":"https:\/\/findbullionprices.com\/blog\/?p=6110"},"modified":"2026-05-22T15:43:48","modified_gmt":"2026-05-22T15:43:48","slug":"whats-the-difference-between-an-ounce-and-a-troy-ounce","status":"publish","type":"post","link":"https:\/\/findbullionprices.com\/blog\/whats-the-difference-between-an-ounce-and-a-troy-ounce\/","title":{"rendered":"What\u2019s the Difference Between an Ounce and a Troy Ounce?"},"content":{"rendered":"\n<p>If you <a href=\"https:\/\/findbullionprices.com\/gold\/closest-to-spot.php?category=gold\">buy gold<\/a> or silver long enough, you\u2019ll eventually run into a classic confusion: <strong>\u201cWait\u2026 an ounce isn\u2019t always an ounce?\u201d<\/strong><\/p>\n\n\n\n<p>Yep. There are <strong>two different ounce systems<\/strong> in common use, and precious metals use the slightly heavier one.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick Answer<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Avoirdupois ounce (oz)<\/strong>: <a href=\"https:\/\/grokipedia.com\/page\/Avoirdupois\" target=\"_blank\" rel=\"noreferrer noopener\">used for everyday weights<\/a> (food, packages, household items).<br><strong>1 oz = 28.3495 grams<\/strong><\/li>\n\n\n\n<li><strong>Troy ounce (ozt)<\/strong>: <a href=\"https:\/\/findbullionprices.com\/blog\/what-is-a-troy-ounce\/\">used for precious metals<\/a> (gold, silver, platinum, palladium).<br><strong>1 ozt = 31.1035 grams<\/strong><\/li>\n<\/ul>\n\n\n\n<p>That\u2019s a difference of <strong>2.754 grams<\/strong>, or about <strong>9.7%<\/strong>. In other words, a troy ounce is heavier.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Why Precious Metals Use the Troy Ounce<\/h2>\n\n\n\n<p>The precious metals industry uses the <strong>troy weight system<\/strong>, a traditional standard <a href=\"https:\/\/findbullionprices.com\/blog\/what-is-a-troy-ounce\/\">tied to historic trade practices<\/a> (often associated with the European trading hub of Troyes, France). Regardless of where you buy bullion today, <strong>global bullion markets price metals in troy ounces<\/strong>.<\/p>\n\n\n\n<p>That\u2019s why gold is quoted as \u201c$\/oz\u201d on financial news, but that \u201coz\u201d is effectively <strong>ozt<\/strong> in the metals context.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"587\" src=\"https:\/\/findbullionprices.com\/blog\/wp-content\/uploads\/2026\/02\/pile-of-1-oz-american-gold-eagle-coins.jpg\" alt=\"\" class=\"wp-image-6111\" style=\"width:512px;height:auto\" srcset=\"https:\/\/findbullionprices.com\/blog\/wp-content\/uploads\/2026\/02\/pile-of-1-oz-american-gold-eagle-coins.jpg 800w, https:\/\/findbullionprices.com\/blog\/wp-content\/uploads\/2026\/02\/pile-of-1-oz-american-gold-eagle-coins-300x220.jpg 300w, https:\/\/findbullionprices.com\/blog\/wp-content\/uploads\/2026\/02\/pile-of-1-oz-american-gold-eagle-coins-768x564.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">The Part That Trips People Up<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">If you see \u201c1 oz\u201d on a bullion product\u2026<\/h3>\n\n\n\n<p>For bullion coins and bars, <strong>\u201c1 oz\u201d almost always means 1 troy ounce<\/strong> unless the seller clearly says otherwise. That includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 oz Gold Eagle \/ Gold Buffalo<\/li>\n\n\n\n<li>1 oz Silver Eagle \/ Maple Leaf \/ Britannia<\/li>\n\n\n\n<li>1 oz bars from major refiners<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">If you\u2019re weighing metals on a kitchen scale\u2026<\/h3>\n\n\n\n<p>Most consumer scales default to <strong>grams<\/strong> (best) or <strong>avoirdupois ounces<\/strong> (oz). If you\u2019re trying to verify bullion weight:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use <strong>grams<\/strong> for accuracy, then convert to ozt if needed.<\/li>\n\n\n\n<li>Or <a href=\"https:\/\/findbullionprices.com\/blog\/3-best-precious-metals-scales\/\">make sure your scale has a <strong>troy ounce (ozt)<\/strong> mode<\/a>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Handy Ounce Conversion Cheatsheet<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1 troy ounce (ozt)<\/strong> = <strong>31.1035 g<\/strong><\/li>\n\n\n\n<li><strong>1 avoirdupois ounce (oz)<\/strong> = <strong>28.3495 g<\/strong><\/li>\n\n\n\n<li><strong>1 ozt<\/strong> \u2248 <strong>1.097 oz<\/strong><\/li>\n\n\n\n<li><strong>1 oz<\/strong> \u2248 <strong>0.911 ozt<\/strong><\/li>\n<\/ul>\n\n\n\n<p>If you\u2019re doing quick math in your head:<br><strong>troy oz \u2248 grams \u00f7 31.1<\/strong><br><strong>grams \u2248 troy oz \u00d7 31.1<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><strong>Disclaimer:<\/strong> This is general information only and not financial advice. Always confirm product specs (weight system, purity, and dimensions) from the dealer or mint before purchasing.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are two different ounce systems in common use, and precious metals use the slightly heavier one.<\/p>\n","protected":false},"author":1,"featured_media":6112,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1195],"tags":[1484,1478],"class_list":["post-6110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-learning-about-precious-metals","tag-avoirdupois-vs-troy-ounce","tag-frequently-asked-questions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ounces vs Troy Ounces- FindBullionPrices.com<\/title>\n<meta name=\"description\" content=\"There are two different ounce systems in common use, and precious 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