Direct conversion
Convert ounce (troy) [oz t] to dram (avoirdupois) [dr] instantly with formula, examples, chart, and FAQs.
1 ounce (troy) [oz t] = 17.554286 dram (avoirdupois) [dr]
1 ounce (troy) [oz t] = 17.554286 dram (avoirdupois) [dr]
Example: 1 ounce (troy) [oz t] equals 17.554286 dram (avoirdupois) [dr].
Weight and mass conversions use kilogram as the reference unit. Common factors include 1 pound = 0.45359237 kilogram and 1 ounce = 0.028349523125 kilogram.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
The ounce (troy) (oz t) is a weight unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse ounce (troy) when comparing weight values, checking specifications, converting between systems, or preparing quick estimates.
The dram (avoirdupois) (dr) is a weight unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse dram (avoirdupois) when comparing weight values, checking specifications, converting between systems, or preparing quick estimates.
| ounce (troy) [oz t] | dram (avoirdupois) [dr] |
|---|---|
| 1 | 17.554286 |
| 2 | 35.108571 |
| 5 | 87.771429 |
| 10 | 175.542857 |
| 20 | 351.085714 |
| 25 | 438.857143 |
| 50 | 877.714286 |
| 100 | 1755.428571 |
| 1000 | 17554.285714 |
Use this formula: 1 ounce (troy) [oz t] = 17.554286 dram (avoirdupois) [dr] Enter your value in the calculator and the result updates instantly.
1 ounce (troy) [oz t] equals 17.554286 dram (avoirdupois) [dr].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.