Table Of Contents
Grain to troy ounce Conversion
1 grain (gr) is equal to 0.002083333333 troy ounce (oz t).
1 gr = 0.002083333333 oz t
or
1 oz t = 480 gr
Formula
To convert a mass from grain (gr) to troy ounce (oz t), divide the mass in grain by 480
m(oz t) = m(gr) / 480
Examples:
Convert 100 grain to troy ounce:
m(oz t) = 100gr / 480 = 0.2083333333 oz t
Conversion table
| 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 |
| 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 |
Frequently asked questions
How do I convert grain to troy ounce?
Divide the value in grain by 480 to get the result in troy ounce. For example, 5 gr ÷ 480 = 0.010416667 oz t.
How many troy ounce are in 1 grain?
1 grain (gr) is equal to 0.002083333 troy ounce (oz t).
How do I convert troy ounce back to grain?
Use the inverse operation: multiply the value in troy ounce by 480 to get the result in grain.
How accurate is the grain to troy ounce 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)