Dram to Grain Converter
Convert Dram (dr) to Grain (gr) instantly. 1 dr = 27.34375 gr.
Mass Converter
26 units available
1 dr = 27.34375 gr
Formula:
gr = dr × 27.34375With your value: 1 dr = 27.34375 gr
How big is that?
Everyday references on a logarithmic scale, all expressed in dram so you can sanity-check the result.
Other Dram to Grain conversions
Dram to Grain Conversion Table
| Dram (dr) | Grain (gr) |
|---|---|
| 0.5 | 13.671875 |
| 1 | 27.34375 |
| 2 | 54.6875 |
| 5 | 136.71875 |
| 10 | 273.4375 |
| 15 | 410.15625 |
| 20 | 546.875 |
| 25 | 683.59375 |
| 50 | 1,367.1875 |
| 100 | 2,734.375 |
| 250 | 6,835.9375 |
| 500 | 13,671.875 |
| 1000 | 27,343.75 |
Grain to Dram Conversion Table
| Grain (gr) | Dram (dr) |
|---|---|
| 0.5 | 0.018286 |
| 1 | 0.036571 |
| 2 | 0.073143 |
| 5 | 0.182857 |
| 10 | 0.365714 |
| 15 | 0.548571 |
| 20 | 0.731429 |
| 25 | 0.914286 |
| 50 | 1.828571 |
| 100 | 3.657143 |
| 250 | 9.142857 |
| 500 | 18.285714 |
| 1000 | 36.571429 |
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.
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
Grain (gr)
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 Dram to Grain
To convert from Dram (dr) to Grain (gr), multiply the value by 27.34375.
Formula: gr = dr × 27.34375
Reverse: dr = gr × 0.0365714286
Step-by-Step Example
- Start with your value in Dram. For example: 5 dr
- Multiply by the conversion factor: 5 x 27.34375
- The result is: 136.71875 gr
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.
About Grain
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
Common uses: ammunition, archery, pharmacy (historic).
Frequently Asked Questions
How many Grain are in 1 Dram?
There are exactly 27.34375 Grain in 1 Dram. This means the conversion factor from Dram to Grain is 27.34375.
What is the formula to convert Dram to Grain?
The formula to convert Dram to Grain is: gr = dr × 27.34375. For example, to convert 10 Dram to Grain, you would multiply 10 by 27.34375.
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 is a Grain?
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
What are the common uses of Dram?
The Dram is commonly used in mass calculations, engineering and science, education.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Dram to Grain converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/dram-to-grain