Troy Ounce to Kilogram Converter

Mass Converter

26 units available

Decimals:

From

To

0.031103

1 oz t = 0.031103 kg

Formula:

kg = oz t × 0.0311034768

With your value: 1 oz t = 0.03110348 kg

How big is that?

Everyday references on a logarithmic scale, all expressed in troy ounce so you can sanity-check the result.

Paperclip (1/31 your value)0.0322 oz t

AA battery (1/1.3 your value)0.772 oz t

Your value1.00 oz t

Can of soda (13× your value)12.5 oz t

Bag of sugar (32× your value)32.2 oz t

House cat (1.4e+2× your value)145 oz t

Other Troy Ounce to Kilogram conversions

2 oz t to kg 3 oz t to kg 4 oz t to kg 5 oz t to kg 6 oz t to kg 7 oz t to kg 8 oz t to kg

Troy Ounce to Kilogram Conversion Table

Troy Ounce (oz t)	Kilogram (kg)
0.5	0.015552
1	0.031103
2	0.062207
5	0.155517
10	0.311035
15	0.466552
20	0.62207
25	0.777587
50	1.555174
100	3.110348
250	7.775869
500	15.551738
1000	31.103477

Kilogram to Troy Ounce Conversion Table

Kilogram (kg)	Troy Ounce (oz t)
0.5	16.075373
1	32.150747
2	64.301493
5	160.753733
10	321.507466
15	482.261199
20	643.014931
25	803.768664
50	1,607.537328
100	3,215.074657
250	8,037.686642
500	16,075.373284
1000	32,150.746569

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Troy Ounce (oz t)

Mass

Exact conversion

1 troy ounce = 480 grains = 0.031 103 476 8 kg exactly. Used for precious metals only.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Kilogram (kg)

Mass

SI definition

The kilogram is defined by taking the Planck constant to be exactly 6.626 070 15 × 10⁻³⁴ J·s.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Troy Ounce to Kilogram

To convert from Troy Ounce (oz t) to Kilogram (kg), multiply the value by 0.0311034768.

Formula: kg = oz t × 0.0311034768

Reverse: oz t = kg × 32.1507465686

Step-by-Step Example

Start with your value in Troy Ounce. For example: 5 oz t
Multiply by the conversion factor: 5 x 0.0311034768
The result is: 0.155517 kg

About Troy Ounce

The troy ounce equals approximately 31.1 grams and is used for weighing precious metals like gold, silver, and platinum.

Common uses: gold trading, silver markets, precious metals.

About Kilogram

The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.

Fun Fact: Until 2019, the kilogram was defined by a platinum-iridium cylinder kept in Paris, called "Le Grand K."

Common uses: body weight, cooking, shipping.

Frequently Asked Questions

How many Kilogram are in 1 Troy Ounce?

There are exactly 0.0311034768 Kilogram in 1 Troy Ounce. This means the conversion factor from Troy Ounce to Kilogram is 0.0311034768.

What is the formula to convert Troy Ounce to Kilogram?

The formula to convert Troy Ounce to Kilogram is: kg = oz t × 0.0311034768. For example, to convert 10 Troy Ounce to Kilogram, you would multiply 10 by 0.0311034768.

What is a Troy Ounce?