Table Of Contents
Troy ounce to grain Conversion
1 troy ounce (oz t) is equal to 480 grain (gr).
1 oz t = 480 gr
or
1 gr = 0.002083333333 oz t
Formula
To convert a mass from troy ounce (oz t) to grain (gr), multiply the mass in troy ounce by 480
m(gr) = m(oz t) × 480
Examples:
Convert 250 troy ounce to grain:
m(gr) = 250oz t × 480 = 120000 gr
Conversion table
| Troy ounce (oz t) | Grain (gr) |
|---|---|
| 1 oz t | 480 gr |
| 2 oz t | 960 gr |
| 3 oz t | 1440 gr |
| 5 oz t | 2400 gr |
| 10 oz t | 4800 gr |
| 20 oz t | 9600 gr |
| 25 oz t | 12000 gr |
| 50 oz t | 24000 gr |
| 100 oz t | 48000 gr |
| 250 oz t | 120000 gr |
| 500 oz t | 240000 gr |
| 1000 oz t | 480000 gr |
| Grain (gr) | Troy ounce (oz t) |
|---|---|
| 1 gr | 0.002083333 oz t |
| 2 gr | 0.004166667 oz t |
| 3 gr | 0.00625 oz t |
| 5 gr | 0.010416667 oz t |
| 10 gr | 0.020833333 oz t |
| 20 gr | 0.041666667 oz t |
| 25 gr | 0.052083333 oz t |
| 50 gr | 0.104166667 oz t |
| 100 gr | 0.208333333 oz t |
| 250 gr | 0.520833333 oz t |
| 500 gr | 1.041666667 oz t |
| 1000 gr | 2.083333333 oz t |
Frequently asked questions
How do I convert troy ounce to grain?
Multiply the value in troy ounce by 480 to get the result in grain. For example, 5 oz t × 480 = 2400 gr.
How many grain are in 1 troy ounce?
1 troy ounce (oz t) is equal to 480 grain (gr).
How do I convert grain back to troy ounce?
Use the inverse operation: divide the value in grain by 480 to get the result in troy ounce.
How accurate is the troy ounce to grain conversion?
The converter multiplies by the conversion factor 480 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- NIST Guide to the SI (SP 811), Appendix B.9: Factors for units listed by kind of quantity or field of science
- Circular of the Bureau of Standards No. 43: The Metric Carat (1st edition, issued November 1, 1913)