How do you convert milligrams to troy ounces?

To convert milligrams (mg) to troy ounces (oz t), multiply the weight in milligrams by 0.00003215 (troy ounces = milligrams × 0.00003215).

What is 5 milligrams in troy ounces?

5 milligrams (5 mg) is equal to 0.00016075 troy ounces (0.00016075 oz t).

Which is larger, 1 milligram (mg) or 1 troy ounce (oz t)?

One troy ounce (oz t) is larger than one milligram (mg). Specifically, 1 oz t equals 31,103.4768 mg, while 1 mg is 0.00003215 oz t.

How do I convert back from troy ounces (oz t) to milligrams (mg)?

To reverse the calculation from oz t to mg, multiply your troy ounce value by the inverse factor 31,103.4768 (or divide by 0.00003215). You can also click the Swap button in the tool above to flip directions in one click.

Are there regional or standard differences when converting mg and oz t?

Precious Metals vs. Everyday Weight: A Troy ounce (ozt) equals 31.1034768 grams—about 9.7% heavier than a standard kitchen/postal avoirdupois ounce (28.349523125 g). Furthermore, 1 Troy pound contains 12 Troy ounces (373.24 g), whereas 1 standard pound contains 16 avoirdupois ounces (453.59 g).

Milligrams to Troy Ounces Converter

Enter the weight in milligrams below to convert it to troy ounces.

Troy Ounces to Milligrams (oz t → mg)

Convert Milligrams to Troy Ounces

Enter a value in milligrams (mg) to convert to troy ounces (oz t).

Value (mg)

From

Result

•

0.000160754troy ounces

5 mg = 0.000160754 oz t

Result updates automatically

Get Widget

Equivalent Measurements Across UnitsFor 5 mg

Grams0.005 g

Kilograms0.000005 kg

Ounces0.00017636 oz

Pounds0.00001102 lb

Stones7.873652e-7 st

Suggested Conversions

Reference:NIST OWM (SI Units — Mass)

[1–3] ↓

Milligram to Troy Ounce Conversion Table

Table showing various milligram measurements converted to troy ounces. Click any preset value or arrow to load it into the converter.

Milligrams (mg)	Troy Ounces (oz t)
1 mg	0.000032151 oz t
2 mg	0.000064301 oz t
2.5 mg	0.000080377 oz t
5 mg	0.000160754 oz t
10 mg	0.000321507 oz t
15 mg	0.000482261 oz t
20 mg	0.000643015 oz t
25 mg	0.000803769 oz t
30 mg	0.000964522 oz t
50 mg	0.0016075 oz t

How to Convert Milligrams to Troy Ounces

To convert milligrams to troy ounces, multiply the weight by the following conversion ratio: 0.000032151 troy ounces/milligram.

Since one milligram is equal to 0.000032151 troy ounces, you can use this simple formula to convert:

troy ounces = milligrams × 0.000032151

The weight in troy ounces is equal to the weight in milligrams multiplied by 0.000032151.

For example, here's how to convert 5 milligrams to troy ounces using the formula above.

troy ounces = (5 mg × 0.000032151) = 0.000160754 oz t

How Many Troy Ounces Are in a Milligram?

There are 0.000032151 troy ounces in a milligram, which is why we use this value in the formula above.

1 mg = 0.000032151 oz t|1 oz t = 31,103.4768 mg

Our milligram to troy ounce calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Milligrams and troy ounces are both units used to measure weight. Keep reading to learn more about each unit.

What Is a Milligram?

A milligram is a unit of weight equal to 1/1,000,000 of a kilogram (0.000001 kg). One-thousandth of a gram (10⁻⁶ kg). [1]

The milligram is classified as a metric and SI-compatible unit of weight. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.

In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milligram (mg) a convenient decimal multiple of the gram (g).

In practice, milligrams (mg) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about milligrams in our Mass & Weight Converter.

What Is a Troy Ounce?

A troy ounce is a unit of weight equal to 0.0311035 kilograms (kg), the base unit for weight. Precious metal (gold, silver, platinum) mass standard equal to 480 grains or exactly 31.1034768 grams. [2]

The troy ounce is classified as a standard unit of weight. Troy Ounces can be abbreviated as oz t; for example, 1 troy ounce can be written as 1 oz t.

When working with troy ounces (oz t) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, troy ounces (oz t) are widely used across standard weight applications within international standard workflows, engineering documentation, and technical data sheets.

Learn more about troy ounces in our Mass & Weight Converter.

When converting weight between milligrams (mg) and troy ounces (oz t), keep full floating-point precision (1 mg = 0.000032151 oz t; 1 oz t = 31,103.4768 mg) during intermediate calculations and round only the final troy ounce figure to match your instrument tolerance.

More Milligram & Troy Ounce Conversions

Need to calculate in the opposite direction? Use our troy ounces to milligrams calculator to switch your starting unit immediately. You can also explore related tools such as converting troy ounces to milligrams, converting grams to troy ounces, or converting milligrams to grams.

Convert from Milligrams

Convert to Troy Ounces

Converting Grams or Ounces to Cups, Tbsp & Tsp?

Open Cooking & Ingredient Converter

Weight and volume require ingredient density (g/mL). Choose a USDA FoodData Central verified ingredient below:

Flour (125 g/cup)Granulated Sugar (200 g/cup)Brown Sugar (220 g/cup)Powdered Sugar (120 g/cup)Butter (227 g/cup)Rice (185 g/cup)Milk (244 g/cup)Water (236.6 g/cup)Honey (339 g/cup)Cooking Oil (218 g/cup)Salt (292 g/cup)

Frequently Asked Questions

There are 0.00003215 troy ounces (oz t) in 1 milligram (mg). Conversely, 1 troy ounce (oz t) is equal to 31,103.4768 milligrams (mg).

Mass & Weight Converter

Quick Info

Direct Factor: 1 milligram (mg) equals 0.00003215 troy ounces (oz t).
Inverse Factor: 1 troy ounce (oz t) equals 31,103.4768 milligrams (mg).
Formula: troy ounces = milligrams × 0.00003215.
Standard Note: Precious Metals vs. Everyday Weight: A Troy ounce (ozt) equals 31.1034768 grams—about 9.7% heavier than a standard kitchen/postal avoirdupois ounce (28.349523125 g). Furthermore, 1 Troy pound contains 12 Troy ounces (373.24 g), whereas 1 standard pound contains 16 avoirdupois ounces (453.59 g).

Units Comparison

Milligram (mg)

One-thousandth of a gram (10⁻⁶ kg).

Troy Ounce (oz t)

Precious metal (gold, silver, platinum) mass standard equal to 480 grains or exactly 31.1034768 grams.

Kilogram (kg)

The fundamental SI unit of mass.

References

[1]NIST OWM · SI Units — Mass
Source
[2]NIST HB 44 · NIST Handbook 44 (Current Ed.)
Source
[3]BIPM · SI Base Unit: Kilogram (kg)
Source

Related Categories

Add This Calculator to Your Site

Free HTML widget · 4 embed formats

Embed the interactive Milligrams to Troy Ounces converter on your blog, classroom, or documentation page.

Customize & Get Embed Code

References

NIST · BIPM · ISO

[1]
NIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Milligrams (mg) to Troy Ounces (oz t)
NIST OWM Standard
[2]
NIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Milligram (mg) & Troy Ounce (oz t)
NIST HB 44 Specification
[3]
BIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (mg to oz t)
BIPM Reference

Measurement Navigator78 Categories9 Scientific Domains

Browse All 78 Measurement Categories

A–Z Directory →Sitemap

Common ConvertersEveryday metric, imperial, and US customary converters for length, weight, volume, temperature, area, pressure, energy, speed, time, and data.