Convert Troy Ounces to Ounces (oz t to oz)
1 troy ounce (oz t) equals 1.097142857 ounces (oz).
1 oz t = 1.097142857 oz
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk troy ounce to ounce converter to paste a column from Excel.
How to Convert Troy Ounce to Ounce
- 1 oz t = 1.097142857 oz
- 1 oz = 0.9114583333 oz t
- Example: convert 1 oz t to oz: 1 oz t = 1 × 1.097142857 oz = 1.097142857 oz
Reference conditions. oz: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
oz = oz t × 1.097142857143
Derivation from SI units:
- 1 oz t = 480 gr = 31.1034768 g (exact)
- 1 oz = 1/16 lb = 28.349523125 g (exact)
- 1 oz t = 0.0311034768 kg ÷ 0.028349523125 kg per oz = 1.097142857143 oz
Both units are defined exactly, so the factor is exact. Troy Ounce definition: troy ounce; Ounce definition: ounce.
Worked examples
- A 1 oz t gold coin weighs 1.097142857 oz on a kitchen scale.
1 oz t × 1.097142857 = 1.097142857 oz - 32.15 oz t (about one kilogram of gold) is 35.27314286 oz.
32.15 oz t × 1.097142857 = 35.27314286 oz
Troy Ounce to Ounce conversion table
| Troy Ounces (oz t) | Ounces (oz) |
|---|---|
| 0.1 oz t | 0.1097142857 oz |
| 0.25 oz t | 0.2742857143 oz |
| 0.5 oz t | 0.5485714286 oz |
| 1 oz t | 1.097142857 oz |
| 2 oz t | 2.194285714 oz |
| 5 oz t | 5.485714286 oz |
| 10 oz t | 10.97142857 oz |
| 20 oz t | 21.94285714 oz |
| 32.15 oz t | 35.27314286 oz |
| 50 oz t | 54.85714286 oz |
| 100 oz t | 109.7142857 oz |
| 400 oz t | 438.8571429 oz |
Where it's used
Precious-metal weights in troy ounces are converted to ordinary (avoirdupois) ounces to compare with household scales. A troy ounce (31.1035 g) is about 9.7 % heavier than an ordinary ounce (28.3495 g).
Troy Ounce to other weight and mass units
| Conversion | 1 oz t equals |
|---|---|
| troy ounce to kilogram | 0.0311034768 kg |
| troy ounce to gram | 31.1034768 g |
| troy ounce to milligram | 31103.4768 mg |
| troy ounce to microgram | 31103476.8 µg |
| troy ounce to metric ton | 0.0000311034768 t |
| troy ounce to pound | 0.06857142857 lb |
| troy ounce to ounce | 1.097142857 oz |
| troy ounce to stone | 0.004897959184 st |
| troy ounce to short ton | 0.00003428571429 ton (US) |
| troy ounce to long ton | 0.0000306122449 ton (UK) |
| troy ounce to grain | 480 gr |
| troy ounce to carat | 155.517384 ct |
Frequently asked questions
Is a troy ounce heavier than an ounce?
Yes: 1 oz t = 1.097142857 oz.
How many ounces are in 1 troy ounce?
1 oz t = 1.097142857 oz.
How do I convert troy ounces to ounces?
Multiply the value in oz t by 1.097142857. For example, 1 oz t × 1.097142857 = 1.097142857 oz.
Is the oz t to oz conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ounce (troy or apothecary)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ounce (avoirdupois) (oz)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Troy Ounces to Ounces (oz t to oz). Retrieved October 18, 2026, from https://scientificconverters.com/mass/troy-ounces-to-ounces/
IEEE
Scientific Converters, "Convert Troy Ounces to Ounces (oz t to oz)," scientificconverters.com. Accessed: Oct. 18, 2026. [Online]. Available: https://scientificconverters.com/mass/troy-ounces-to-ounces/