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Density and Mass

drtogr

Convert drams (avoirdupois) (dr) to grains (gr).

Factor1 dr = 27.34375 gr

Converter

dr

Accepts numbers or expressions, e.g. 150 + 14.7

Result
27.3438gr

Rendered to 6 significant figures.

Formula

Formula
gr = dr × 27.34375

Multiply any value in drams (avoirdupois) by 27.34375 to obtain the value in grains.

Worked example

Convert 1 dr to gr.

  1. 01Start with 1 dr.
  2. 02Multiply by the conversion factor: 1 × 27.34375 = 27.3438 gr.
Result1 dr = 27.3438 gr

Conversion table

drgr
127.344
254.688
5136.72
10273.44
20546.88
501367.2
1002734.4
2005468.8
50013672
100027344

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from dr to gr?
1 dr equals 27.34375 gr. To convert, multiply the value in drams (avoirdupois) by 27.34375.
How do I convert 1 dr to gr?
1 dr = 27.3438 gr. For any value, multiply by 27.34375.
How do I convert gr back to dr?
Divide by the same factor — or equivalently, multiply by 0.03657143. So 1 gr = 0.0365714 dr.
When would I need to convert dram (avoirdupois) to grain (troy/apothecary)?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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