Convert Troy Ounce to Slug
Convert troy ounces to slugs instantly. 1 troy ounce = 0.0021312652 slug — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Slug to Troy Ounce converter for the reverse conversion.
Units explained
Troy Ounce
The troy ounce (ozt) equals about 31.103 grams, one-twelfth of a troy pound.
From the Troy system of weights associated with Troyes, France.
The global standard for pricing gold, silver, platinum, and palladium.
Established in the medieval Troy system and retained for precious metals.
Slug
The slug is the mass that accelerates at 1 ft/s^2 under a force of one pound-force, about 14.59 kg.
Coined in the early 20th century for the British gravitational (engineering) system.
US and British engineering dynamics.
Introduced in the British gravitational system of units.
Troy Ounce to Slug conversion formula
The relationship between troy ounces and slugs:
To convert troy ounces to slugs, multiply the value in troy ounces by 0.0021312652. To reverse, multiply slugs by 469.2048747811.
How to use this converter
Type a value into the calculator. The result in slugs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Slug to Troy Ounce converter for the reverse direction.
Step-by-step: convert troy ounces to slugs
- Write down the value in troy ounces (oz t).
- Multiply that value by the factor 0.0021312652.
- The product is the equivalent value in slugs (slug).
- To reverse, multiply the slug value by 469.2048747811.
Worked examples
Example 1 — Convert 1 oz t to slug:
1 × 0.0021312652 = 0.0021312652 slug
Example 2 — Convert 100 oz t to slug:
100 × 0.0021312652 = 0.2131265155 slug
Real-world example — Ruler-scale measurements
A 30-troy ounce school ruler converts cleanly to slugs — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 oz t × 0.0021312652 = 0.0639379546 slug
Real-world example — Hardware-scale dimensions
A 10-troy ounce fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between troy ounces and slugs daily when mixing metric and imperial tools.
10 oz t × 0.0021312652 = 0.0213126515 slug
Real-world example — Postcard and small-object dimensions
A postcard is about 5 troy ounces wide. Converting to slugs is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 oz t × 0.0021312652 = 0.0106563258 slug
Troy Ounce to Slug conversion table
Standard reference values for converting troy ounces to slugs:
| Troy Ounce [oz t] | Slug [slug] |
|---|---|
| 0.01 | 2.131265e-5 |
| 0.1 | 0.0002131265 |
| 1 | 0.0021312652 |
| 2 | 0.0042625303 |
| 3 | 0.0063937955 |
| 4 | 0.0085250606 |
| 5 | 0.0106563258 |
| 10 | 0.0213126515 |
| 20 | 0.0426253031 |
| 30 | 0.0639379546 |
| 40 | 0.0852506062 |
| 50 | 0.1065632577 |
| 100 | 0.2131265155 |
| 500 | 1.0656325773 |
| 1000 | 2.1312651546 |
Frequently asked questions
How many slugs is 1 troy ounce?
How do I convert troy ounces to slugs?
How do I convert slugs back to troy ounces?
How many slugs is 100 troy ounces?
Popular weight unit conversions
Convert Troy Ounce to other weight units
Show all Troy Ounce conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 oz t = 0.0021312652 slug) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.