Ounce to Dram Converter
Convert Ounce (oz) to Dram (dr) instantly. 1 oz = 16 dr.
Mass Converter
26 units available
1 oz = 16 dr
Formula:
dr = oz × 16With your value: 1 oz = 16 dr
How big is that?
Everyday references on a logarithmic scale, all expressed in ounce so you can sanity-check the result.
Other Ounce to Dram conversions
Ounce to Dram Conversion Table
| Ounce (oz) | Dram (dr) |
|---|---|
| 0.5 | 8 |
| 1 | 16 |
| 2 | 32 |
| 5 | 80 |
| 10 | 160 |
| 15 | 240 |
| 20 | 320 |
| 25 | 400 |
| 50 | 800 |
| 100 | 1,600 |
| 250 | 4,000 |
| 500 | 8,000 |
| 1000 | 16,000 |
Dram to Ounce Conversion Table
| Dram (dr) | Ounce (oz) |
|---|---|
| 0.5 | 0.03125 |
| 1 | 0.0625 |
| 2 | 0.125 |
| 5 | 0.3125 |
| 10 | 0.625 |
| 15 | 0.9375 |
| 20 | 1.25 |
| 25 | 1.5625 |
| 50 | 3.125 |
| 100 | 6.25 |
| 250 | 15.625 |
| 500 | 31.25 |
| 1000 | 62.5 |
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.
Ounce (oz)
Mass
1 avoirdupois ounce = 1/16 lb = 0.028 349 523 125 kg exactly.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Dram (dr)
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 Ounce to Dram
To convert from Ounce (oz) to Dram (dr), multiply the value by 16.
Formula: dr = oz × 16
Reverse: oz = dr × 0.0625
Step-by-Step Example
- Start with your value in Ounce. For example: 5 oz
- Multiply by the conversion factor: 5 x 16
- The result is: 80 dr
About Ounce
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
Common uses: food portions, postal mail, precious metals.
About Dram
The dram (dr) is a unit of mass and weight. One dram equals 0.001771845195 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: mass calculations, engineering and science, education.
Frequently Asked Questions
How many Dram are in 1 Ounce?
There are exactly 16 Dram in 1 Ounce. This means the conversion factor from Ounce to Dram is 16.
What is the formula to convert Ounce to Dram?
The formula to convert Ounce to Dram is: dr = oz × 16. For example, to convert 10 Ounce to Dram, you would multiply 10 by 16.
What is a Ounce?
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
What is a Dram?
The dram (dr) is a unit of mass and weight. One dram equals 0.001771845195 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Ounce?
The Ounce is commonly used in food portions, postal mail, precious metals.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Ounce to Dram converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/ounce-to-dram