Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Troy Ounces to Grams Converter (ozt to g)
grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
A troy ounce is exactly 31.1034768 g. Bullion, coins, and lab reagents in precious metals use troy, not avoirdupois. A “1 oz gold coin” is 31.103 g, not the 28.35 g kitchen ounce. 12 troy ounces make a troy pound; that pound is not the grocery pound.
Troy ounces
ozt → g
31.1034768 g
1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
- You typed
- 1 ozt
- One g is
- 0.0321507 ozt
- How it’s calculated
- grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Troy ounces
The “Troy ounces” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
A troy ounce is exactly 31.1034768 g. Bullion, coins, and lab reagents in precious metals use troy, not avoirdupois. A “1 oz gold coin” is 31.103 g, not the 28.35 g kitchen ounce. 12 troy ounces make a troy pound; that pound is not the grocery pound. grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains. Example: 1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
Example: 1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
When to use this Troy Ounces to Grams
Common use cases
- A troy ounce is exactly 31.1034768 g. Bullion, coins, and lab reagents in precious metals use troy, not avoirdupois. A “1 oz gold coin” is 31.103 g, not the 28.35 g kitchen ounce. 12 troy ounces make a troy pound; that pound is not the grocery pound.
- Sanity-check with this case: 1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
- The relationship is: grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Troy ounces
- grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
- Example on the page: 1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
How to Convert Troy Ounces to Grams Step-by-Step
- 1Enter Troy ounces. Use the values you have, not a catalog average, unless that is all you know.
- 2grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
- 3Worked case: 1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.
1 ozt = 31.1034768 g. 10 ozt bar = 311.034768 g. ~32.1507 ozt in a kilogram.
Example: set Troy ounces = 1, then read the result.
Variable definitions
- value
Troy ounces
The “Troy ounces” field. Default 1; typical range 0–1000000000.
- The conversion (grams = troy ounces × 31.1034768. Exact. 1 ozt = 480 grains.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
That is 28.349523125 g. Use ounces to grams for food and shipping.
Related calculators
Unit Converters
- Grams to OuncesCoffee bags, protein scoops, and postage: grams on the label, ounces in US recipes. Divide grams by 28.3495. This is the avoirdupois ounce (16 in a pound), not the troy ounce jewelers use.
- SI Gram Prefix ConverterMass prefixes attach to the gram, not the kilogram. Kilogram is already kilo + gram. Scale yottagram down to yoctogram, or milligram to microgram, without mixing in pounds. Jewelry carats and troy ounces are separate legal pages.
- Butter Sticks to GramsA US stick is ½ cup, 8 tablespoons, 4 oz, 113 g. European blocks are often 250 g. If a UK recipe says “8 oz butter,” that is two US sticks, not a European brick.
- Ounces to GramsUS recipes still say 8 oz of chocolate. European scales only know grams. Multiply ounces by 28.35. If the recipe meant a fluid cup, you are in the wrong aisle — that is volume.
- Pennyweights to GramsPawn shops and gold buyers still quote pennyweights (dwt). 20 dwt make a troy ounce. One dwt is 1.555 g. If someone prices scrap in dwt and you think in grams, convert before you nod.
- Pounds to OuncesSixteen avoirdupois ounces in a pound. Shipping labels and baby weight still mix them: 7 lb 8 oz is 120 oz total. Multiply pounds by 16. No troy, no fluid ounces.
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4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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