Troy Ounce to Grain Converter
Convert Troy Ounce (oz t) to Grain (gr) instantly. 1 oz t = 480 gr.
Mass Converter
26 units available
1 oz t = 480 gr
Formula:
gr = oz t × 480With your value: 1 oz t = 480 gr
How big is that?
Everyday references on a logarithmic scale, all expressed in troy ounce so you can sanity-check the result.
Other Troy Ounce to Grain conversions
Troy Ounce to Grain Conversion Table
| Troy Ounce (oz t) | Grain (gr) |
|---|---|
| 0.5 | 240 |
| 1 | 480 |
| 2 | 960 |
| 5 | 2,400 |
| 10 | 4,800 |
| 15 | 7,200 |
| 20 | 9,600 |
| 25 | 12,000 |
| 50 | 24,000 |
| 100 | 48,000 |
| 250 | 120,000 |
| 500 | 240,000 |
| 1000 | 480,000 |
Grain to Troy Ounce Conversion Table
| Grain (gr) | Troy Ounce (oz t) |
|---|---|
| 0.5 | 0.001042 |
| 1 | 0.002083 |
| 2 | 0.004167 |
| 5 | 0.010417 |
| 10 | 0.020833 |
| 15 | 0.03125 |
| 20 | 0.041667 |
| 25 | 0.052083 |
| 50 | 0.104167 |
| 100 | 0.208333 |
| 250 | 0.520833 |
| 500 | 1.041667 |
| 1000 | 2.083333 |
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
1 troy ounce = 480 grains = 0.031 103 476 8 kg exactly. Used for precious metals only.
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Grain (gr)
Mass
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
How to Convert Troy Ounce to Grain
To convert from Troy Ounce (oz t) to Grain (gr), multiply the value by 480.
Formula: gr = oz t × 480
Reverse: oz t = gr × 0.0020833333
Step-by-Step Example
- Start with your value in Troy Ounce. For example: 5 oz t
- Multiply by the conversion factor: 5 x 480
- The result is: 2,400 gr
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 Grain
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
Common uses: ammunition, archery, pharmacy (historic).
Frequently Asked Questions
How many Grain are in 1 Troy Ounce?
There are exactly 480 Grain in 1 Troy Ounce. This means the conversion factor from Troy Ounce to Grain is 480.
What is the formula to convert Troy Ounce to Grain?
The formula to convert Troy Ounce to Grain is: gr = oz t × 480. For example, to convert 10 Troy Ounce to Grain, you would multiply 10 by 480.
What is a Troy Ounce?
The troy ounce equals approximately 31.1 grams and is used for weighing precious metals like gold, silver, and platinum.
What is a Grain?
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
What are the common uses of Troy Ounce?
The Troy Ounce is commonly used in gold trading, silver markets, precious metals.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Troy Ounce to Grain converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/troy_ounce-to-grain