Fluid Ounce (US) to Fluid Dram (US) Converter
Convert Fluid Ounce (US) (fl oz) to Fluid Dram (US) (fl dr) instantly. 1 fl oz = 8 fl dr.
Volume Converter
40 units available
1 fl oz = 8 fl dr
Formula:
fl dr = fl oz × 8With your value: 1 fl oz = 8 fl dr
How big is that?
Everyday references on a logarithmic scale, all expressed in fluid ounce (us) so you can sanity-check the result.
Other Fluid Ounce (US) to Fluid Dram (US) conversions
Fluid Ounce (US) to Fluid Dram (US) Conversion Table
| Fluid Ounce (US) (fl oz) | Fluid Dram (US) (fl dr) |
|---|---|
| 0.5 | 4 |
| 1 | 8 |
| 2 | 16 |
| 5 | 40 |
| 10 | 80 |
| 15 | 120 |
| 20 | 160 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
| 250 | 2,000 |
| 500 | 4,000 |
| 1000 | 8,000 |
Fluid Dram (US) to Fluid Ounce (US) Conversion Table
| Fluid Dram (US) (fl dr) | Fluid Ounce (US) (fl oz) |
|---|---|
| 0.5 | 0.0625 |
| 1 | 0.125 |
| 2 | 0.25 |
| 5 | 0.625 |
| 10 | 1.25 |
| 15 | 1.875 |
| 20 | 2.5 |
| 25 | 3.125 |
| 50 | 6.25 |
| 100 | 12.5 |
| 250 | 31.25 |
| 500 | 62.5 |
| 1000 | 125 |
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.
Fluid Ounce (US) (fl oz)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Fluid Dram (US) (fl dr)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Fluid Ounce (US) to Fluid Dram (US)
To convert from Fluid Ounce (US) (fl oz) to Fluid Dram (US) (fl dr), multiply the value by 8.
Formula: fl dr = fl oz × 8
Reverse: fl oz = fl dr × 0.125
Step-by-Step Example
- Start with your value in Fluid Ounce (US). For example: 5 fl oz
- Multiply by the conversion factor: 5 x 8
- The result is: 40 fl dr
About Fluid Ounce (US)
The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.
Common uses: beverages, cooking, cocktails.
About Fluid Dram (US)
The fluid dram (us) (fl dr) is a unit of volume and capacity. One fluid dram (us) equals 0.003696691195 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: volume calculations, engineering and science, education.
Frequently Asked Questions
How many Fluid Dram (US) are in 1 Fluid Ounce (US)?
There are exactly 8 Fluid Dram (US) in 1 Fluid Ounce (US). This means the conversion factor from Fluid Ounce (US) to Fluid Dram (US) is 8.
What is the formula to convert Fluid Ounce (US) to Fluid Dram (US)?
The formula to convert Fluid Ounce (US) to Fluid Dram (US) is: fl dr = fl oz × 8. For example, to convert 10 Fluid Ounce (US) to Fluid Dram (US), you would multiply 10 by 8.
What is a Fluid Ounce (US)?
The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.
What is a Fluid Dram (US)?
The fluid dram (us) (fl dr) is a unit of volume and capacity. One fluid dram (us) equals 0.003696691195 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Fluid Ounce (US)?
The Fluid Ounce (US) is commonly used in beverages, cooking, cocktails.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). Fluid Ounce (US) to Fluid Dram (US) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/fluid_ounce_us-to-dram_us