Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Ratti

Convert drams (avoirdupois) to rattis instantly. 1 dram (avoirdupois) = 14.5830880658 ratti — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ratti 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.

Indian / South Asian

Ratti

What is a ratti?

The ratti equals about 0.1215 gram, the smallest traditional South Asian weight.

Origin of the ratti

Based on the seed of the Gunja plant (Abrus precatorius), or 'raktika' in Sanskrit.

Where it is used

Gemstones and gold in Indian and South Asian jewelry.

When and where it was developed

One of the oldest weight units of the Indian subcontinent, later standardized.

Dram (avoirdupois) to Ratti conversion formula

Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.

The relationship between drams (avoirdupois) and rattis:

1 dr = 14.5830880658 ratti
1 ratti = 0.0685725818 dr

To convert drams (avoirdupois) to rattis, multiply the value in drams (avoirdupois) by 14.5830880658. To reverse, multiply rattis by 0.0685725818.

How to use this converter

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

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

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 14.5830880658.
  3. The product is the equivalent value in rattis (ratti).
  4. To reverse, multiply the ratti value by 0.0685725818.

Worked examples

Example 1 — Convert 1 dr to ratti:
1 × 14.5830880658 = 14.5830880658 ratti

Example 2 — Convert 100 dr to ratti:
100 × 14.5830880658 = 1458.3088065844 ratti

Real-world example — Adjacent metric sub-units

One dram (avoirdupois) equals 1,000 rattis. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.

1 dr × 14.5830880658 = 14.5830880658 ratti

Real-world example — Adjacent small-scale precision

One dram (avoirdupois) equals 1,000 rattis — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).

1 dr × 14.5830880658 = 14.5830880658 ratti

Dram (avoirdupois) to Ratti conversion table

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

Dram (avoirdupois) [dr]Ratti [ratti]
0.010.1458308807
0.11.4583088066
114.5830880658
229.1661761317
343.7492641975
458.3323522634
572.9154403292
10145.8308806584
20291.6617613169
30437.4926419753
40583.3235226337
50729.1544032922
1001458.3088065844
5007291.5440329218
100014583.0880658436

Frequently asked questions

How many rattis is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 14.5830880658 ratti.
How do I convert drams (avoirdupois) to rattis?
Multiply the value in drams (avoirdupois) by 14.5830880658 to get rattis.
How do I convert rattis back to drams (avoirdupois)?
Multiply the value in rattis by 0.0685725818, or use the Ratti to Dram (avoirdupois) converter.
How many rattis is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 1458.3088065844 rattis, because 100 × 14.5830880658 = 1458.3088065844.

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 = 14.5830880658 ratti) verified against the following authoritative sources:

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