Milligram to Troy Ounce Converter

Mass Converter

26 units available

Decimals:

From

To

3.215075e-5

1 mg = 3.215075e-5 oz t

Formula:

oz t = mg × 0.0000321507

With your value: 1 mg = 3.215075e-5 oz t

How big is that?

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

Your value1.00 mg

Paperclip (1.0e+3× your value)1.00e+3 mg

AA battery (2.4e+4× your value)2.40e+4 mg

Can of soda (3.9e+5× your value)3.90e+5 mg

Bag of sugar (1.0e+6× your value)1.00e+6 mg

House cat (4.5e+6× your value)4.50e+6 mg

Other Milligram to Troy Ounce conversions

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

Milligram to Troy Ounce Conversion Table

Milligram (mg)	Troy Ounce (oz t)
0.5	1.607537e-5
1	3.215075e-5
2	6.430149e-5
5	0.000161
10	0.000322
15	0.000482
20	0.000643
25	0.000804
50	0.001608
100	0.003215
250	0.008038
500	0.016075
1000	0.032151

Troy Ounce to Milligram Conversion Table

Troy Ounce (oz t)	Milligram (mg)
0.5	15,551.7384
1	31,103.4768
2	62,206.9536
5	155,517.384
10	311,034.768
15	466,552.152
20	622,069.536
25	777,586.92
50	1,555,173.84
100	3,110,347.68
250	7,775,869.2
500	15,551,738.4
1000	31,103,476.8

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.

Milligram (mg)

Mass

Exact conversion

Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).

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

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

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

How to Convert Milligram to Troy Ounce

To convert from Milligram (mg) to Troy Ounce (oz t), multiply the value by 3.215075e-5.

Formula: oz t = mg × 0.0000321507

Reverse: mg = oz t × 31,103.4768

Step-by-Step Example

Start with your value in Milligram. For example: 5 mg
Multiply by the conversion factor: 5 x 3.215075e-5
The result is: 0.000161 oz t

About Milligram

The milligram equals one thousandth of a gram and is the standard unit for drug dosage and nutrient quantities.

Common uses: medication dosage, nutrition labels, laboratory work.

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.

Frequently Asked Questions

How many Troy Ounce are in 1 Milligram?

There are exactly 3.215075e-5 Troy Ounce in 1 Milligram. This means the conversion factor from Milligram to Troy Ounce is 3.215075e-5.

What is the formula to convert Milligram to Troy Ounce?

The formula to convert Milligram to Troy Ounce is: oz t = mg × 0.0000321507. For example, to convert 10 Milligram to Troy Ounce, you would multiply 10 by 3.215075e-5.

What is a Milligram?