Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Gram

Convert drams (avoirdupois) to grams instantly. 1 dram (avoirdupois) = 1.7718452 gram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Gram to Dram (avoirdupois) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Dram (avoirdupois)

What is a dram (avoirdupois)?

The avoirdupois dram (dr) equals one-sixteenth of an ounce, about 1.77 grams.

Origin of the dram (avoirdupois)

From Greek 'drachma' through Latin 'dragma'.

Where it is used

Historically pharmacy; today occasional cooking and firearms (powder) use.

When and where it was developed

Defined as 1/256 of the avoirdupois pound.

Metric / SI

Gram

What is a gram?

The gram (g) equals one-thousandth of a kilogram.

Origin of the gram

From Late Latin 'gramma', a small weight or scruple.

Where it is used

The everyday metric unit for food, medicine, and small objects.

When and where it was developed

Defined in 1795 as the mass of one cubic centimeter of water at melting point.

Dram (avoirdupois) to Gram conversion formula

The relationship between drams (avoirdupois) and grams:

1 dr = 1.7718452 g
1 g = 0.5643833897 dr

To convert drams (avoirdupois) to grams, multiply the value in drams (avoirdupois) by 1.7718452. To reverse, multiply grams by 0.5643833897.

How to use this converter

Type a value into the calculator. The result in grams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Gram to Dram (avoirdupois) converter for the reverse direction.

Step-by-step: convert drams (avoirdupois) to grams

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 1.7718452.
  3. The product is the equivalent value in grams (g).
  4. To reverse, multiply the gram value by 0.5643833897.

Worked examples

Example 1 — Convert 1 dr to g:
1 × 1.7718452 = 1.7718452 g

Example 2 — Convert 100 dr to g:
100 × 1.7718452 = 177.18452 g

Real-world example — Postcard and small-object dimensions

A postcard is about 5 drams (avoirdupois) wide. Converting to grams is essential for international postal addressing forms that ask for dimensions in different units across countries.

5 dr × 1.7718452 = 8.859226 g

Real-world example — Ruler-scale measurements

A 30-dram (avoirdupois) school ruler converts cleanly to grams — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 dr × 1.7718452 = 53.155356 g

Real-world example — Hardware-scale dimensions

A 10-dram (avoirdupois) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between drams (avoirdupois) and grams daily when mixing metric and imperial tools.

10 dr × 1.7718452 = 17.718452 g

Dram (avoirdupois) to Gram conversion table

Standard reference values for converting drams (avoirdupois) to grams:

Dram (avoirdupois) [dr]Gram [g]
0.010.017718452
0.10.17718452
11.7718452
23.5436904
35.3155356
47.0873808
58.859226
1017.718452
2035.436904
3053.155356
4070.873808
5088.59226
100177.18452
500885.9226
10001771.8452

Frequently asked questions

How many grams is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 1.7718452 gram.
How do I convert drams (avoirdupois) to grams?
Multiply the value in drams (avoirdupois) by 1.7718452 to get grams.
How do I convert grams back to drams (avoirdupois)?
Multiply the value in grams by 0.5643833897, or use the Gram to Dram (avoirdupois) converter.
How many grams is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 177.18452 grams, because 100 × 1.7718452 = 177.18452.

Convert Dram (avoirdupois) to other weight units

Show all Dram (avoirdupois) conversions
Metric / SI (18 units)
Dram (avoirdupois) to Attogram (ag) Dram (avoirdupois) to Femtogram (fg) Dram (avoirdupois) to Picogram (pg) Dram (avoirdupois) to Nanogram (ng) Dram (avoirdupois) to Microgram (µg) Dram (avoirdupois) to Milligram (mg) Dram (avoirdupois) to Centigram (cg) Dram (avoirdupois) to Decigram (dg) Dram (avoirdupois) to Gram (g) Dram (avoirdupois) to Dekagram (dag) Dram (avoirdupois) to Hectogram (hg) Dram (avoirdupois) to Kilogram (kg) Dram (avoirdupois) to Quintal (metric) (q) Dram (avoirdupois) to Metric Ton (t) Dram (avoirdupois) to Gigagram (Gg) Dram (avoirdupois) to Teragram (Tg) Dram (avoirdupois) to Petagram (Pg) Dram (avoirdupois) to Exagram (Eg)
Avoirdupois (14 units)
Dram (avoirdupois) to Grain (gr) Dram (avoirdupois) to Ounce (oz) Dram (avoirdupois) to Pound (lb) Dram (avoirdupois) to Clove (clove) Dram (avoirdupois) to Stone (US) (st) Dram (avoirdupois) to Stone (UK) (st) Dram (avoirdupois) to Quarter (US) (qr) Dram (avoirdupois) to Quarter (UK) (qr) Dram (avoirdupois) to Hundredweight (US) (cwt) Dram (avoirdupois) to Hundredweight (UK) (cwt) Dram (avoirdupois) to Wey (wey) Dram (avoirdupois) to Kilopound (kip) (kip) Dram (avoirdupois) to Ton (short, US) (sh tn) Dram (avoirdupois) to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Dram (avoirdupois) to Point (1/100 carat) (pt) Dram (avoirdupois) to Carat (metric) (ct) Dram (avoirdupois) to Scruple (apothecary) (s ap) Dram (avoirdupois) to Pennyweight (dwt) Dram (avoirdupois) to Momme (mom) Dram (avoirdupois) to Mace (mace) Dram (avoirdupois) to Dram (apothecary/troy) (dr ap) Dram (avoirdupois) to Troy Ounce (oz t) Dram (avoirdupois) to Tael (tael) Dram (avoirdupois) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Dram (avoirdupois) to Ratti (ratti) Dram (avoirdupois) to Masha (masha) Dram (avoirdupois) to Tola (tola) Dram (avoirdupois) to Chittack (Chatank) (chittack) Dram (avoirdupois) to Seer (Ser) (seer) Dram (avoirdupois) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Dram (avoirdupois) to Electron Mass (rest) (me) Dram (avoirdupois) to MeV/c2 (MeV/c²) Dram (avoirdupois) to Muon Mass (mµ) Dram (avoirdupois) to Atomic Mass Unit (u) Dram (avoirdupois) to Proton Mass (mp) Dram (avoirdupois) to Neutron Mass (mn) Dram (avoirdupois) to Deuteron Mass (md) Dram (avoirdupois) to Carbon-12 Atom Mass (C-12) Dram (avoirdupois) to Planck Mass (mP)
Astronomical (4 units)
Dram (avoirdupois) to Lunar Mass (Moon) (M☾) Dram (avoirdupois) to Earth's Mass (M⊕) Dram (avoirdupois) to Jupiter Mass (MJ) Dram (avoirdupois) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Dram (avoirdupois) to Lepton (Biblical Roman) (lepton) Dram (avoirdupois) to Quadrans (Biblical Roman) (quadrans) Dram (avoirdupois) to Assarion (Biblical Roman) (assarion) Dram (avoirdupois) to Gerah (Biblical Hebrew) (gerah) Dram (avoirdupois) to Drachma (Biblical Greek) (drachma) Dram (avoirdupois) to Denarius (Biblical Roman) (denarius) Dram (avoirdupois) to Bekan (Biblical Hebrew) (bekah) Dram (avoirdupois) to Didrachma (Biblical Greek) (didrachma) Dram (avoirdupois) to Shekel (Biblical Hebrew) (shekel) Dram (avoirdupois) to Tetradrachma (Biblical Greek) (tetra) Dram (avoirdupois) to Mina (Biblical Greek) (mina) Dram (avoirdupois) to Mina (Biblical Hebrew) (mina) Dram (avoirdupois) to Talent (Biblical Greek) (talent) Dram (avoirdupois) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Dram (avoirdupois) to Poundal (pdl) Dram (avoirdupois) to Ton (assay) (US) (AT) Dram (avoirdupois) to Ton (assay) (UK) (AT) Dram (avoirdupois) to Kilogram-force square second/meter (hyl) Dram (avoirdupois) to Slug (slug)

Sources & references

Conversion factor (1 dr = 1.7718452 g) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.