Gold  
A balance scale with a gold coin on one side and a small gold bar on the other

Gold unit converter

Type a weight in any unit. Every other unit updates as you type, with the value of that much pure gold at today’s spot price.

Pure gold at spot

 

 

1 troy ounce
31.1034768 g
1 kilogram
32.1507466 oz t
1 pennyweight
1.55517384 g
1 tola (approx.)
11.66 g
1 ounce (avoirdupois)
28.349523125 g

Gold prices are always quoted per troy ounce. Troy ounce explained.

Quick conversion table

Common gold weights
Troy ouncesGramsPennyweightRegular ounces
1/103.11020.110
1/47.77650.274
1/215.552100.549
131.103201.097
10311.03520010.971
32.15 (1 kilo)1,000.000643.01535.274
400 (Good Delivery bar, nominal)12,441.3918,000438.857

Gold weights, explained quickly

How many grams are in a troy ounce of gold?

31.1034768 grams. A regular ounce, the kind on a kitchen scale, is 28.349523125 grams.

How many troy ounces are in a kilo?

32.1507466 troy ounces in one kilogram.

What is a pennyweight?

One twentieth of a troy ounce, or 1.55517384 grams. Jewelers and scrap buyers in the United States often price gold by the pennyweight, written dwt.

What is a tola?

A traditional unit used for gold in South Asia and the Gulf. A tola is about 11.66 grams, or about 0.375 troy ounces; the converter uses 11.6638 grams.

Sources and fact-check2 primary sources, checked October 17, 2026
  1. NIST, Office of Weights and Measures: SI units, mass.
  2. NIST Handbook 44, Appendix C: General tables of units of measurement.

We check every figure against the original source: the mint, the regulator, the exchange or the company itself. Spotted something out of date? Tell us.