Mass and Weight · Unit Converter

Convert Ratti to Troy Ounce

Convert rattis to troy ounces instantly. 1 ratti = 0.0039063157 troy ounce — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Troy Ounce to Ratti 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

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.

Troy & Apothecary

Troy Ounce

What is a troy ounce?

The troy ounce (ozt) equals about 31.103 grams, one-twelfth of a troy pound.

Origin of the troy ounce

From the Troy system of weights associated with Troyes, France.

Where it is used

The global standard for pricing gold, silver, platinum, and palladium.

When and where it was developed

Established in the medieval Troy system and retained for precious metals.

Ratti to Troy Ounce 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 rattis and troy ounces:

1 ratti = 0.0039063157 oz t
1 oz t = 255.9956938272 ratti

To convert rattis to troy ounces, multiply the value in rattis by 0.0039063157. To reverse, multiply troy ounces by 255.9956938272.

How to use this converter

Type a value into the calculator. The result in troy ounces updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Troy Ounce to Ratti converter for the reverse direction.

Step-by-step: convert rattis to troy ounces

  1. Write down the value in rattis (ratti).
  2. Multiply that value by the factor 0.0039063157.
  3. The product is the equivalent value in troy ounces (oz t).
  4. To reverse, multiply the troy ounce value by 255.9956938272.

Worked examples

Example 1 — Convert 1 ratti to oz t:
1 × 0.0039063157 = 0.0039063157 oz t

Example 2 — Convert 100 ratti to oz t:
100 × 0.0039063157 = 0.3906315708 oz t

Real-world example — Packaging gauge

A 4-ratti plastic bag thickness is a common spec for grocery and freezer bags. Converting from rattis to troy ounces is what packaging buyers do whenever they bridge US and metric supplier quotes.

4 ratti × 0.0039063157 = 0.0156252628 oz t

Real-world example — Plastic film and laminate thickness

A 500-ratti sheet is a typical spec for ID-card laminates and film overlays. Converting to troy ounces aligns the value with the unit most CAD systems and material datasheets prefer.

500 ratti × 0.0039063157 = 1.953157854 oz t

Ratti to Troy Ounce conversion table

Standard reference values for converting rattis to troy ounces:

Ratti [ratti]Troy Ounce [oz t]
0.013.906316e-5
0.10.0003906316
10.0039063157
20.0078126314
30.0117189471
40.0156252628
50.0195315785
100.0390631571
200.0781263142
300.1171894712
400.1562526283
500.1953157854
1000.3906315708
5001.953157854
10003.9063157081

Frequently asked questions

How many troy ounces is 1 ratti?
1 ratti equals 0.0039063157 troy ounce.
How do I convert rattis to troy ounces?
Multiply the value in rattis by 0.0039063157 to get troy ounces.
How do I convert troy ounces back to rattis?
Multiply the value in troy ounces by 255.9956938272, or use the Troy Ounce to Ratti converter.
How many troy ounces is 100 rattis?
100 rattis equals 0.3906315708 troy ounces, because 100 × 0.0039063157 = 0.3906315708.

Convert Ratti to other weight units

Show all Ratti conversions
Metric / SI (18 units)
Ratti to Attogram (ag) Ratti to Femtogram (fg) Ratti to Picogram (pg) Ratti to Nanogram (ng) Ratti to Microgram (µg) Ratti to Milligram (mg) Ratti to Centigram (cg) Ratti to Decigram (dg) Ratti to Gram (g) Ratti to Dekagram (dag) Ratti to Hectogram (hg) Ratti to Kilogram (kg) Ratti to Quintal (metric) (q) Ratti to Metric Ton (t) Ratti to Gigagram (Gg) Ratti to Teragram (Tg) Ratti to Petagram (Pg) Ratti to Exagram (Eg)
Avoirdupois (15 units)
Ratti to Grain (gr) Ratti to Dram (avoirdupois) (dr) Ratti to Ounce (oz) Ratti to Pound (lb) Ratti to Clove (clove) Ratti to Stone (US) (st) Ratti to Stone (UK) (st) Ratti to Quarter (US) (qr) Ratti to Quarter (UK) (qr) Ratti to Hundredweight (US) (cwt) Ratti to Hundredweight (UK) (cwt) Ratti to Wey (wey) Ratti to Kilopound (kip) (kip) Ratti to Ton (short, US) (sh tn) Ratti to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Ratti to Point (1/100 carat) (pt) Ratti to Carat (metric) (ct) Ratti to Scruple (apothecary) (s ap) Ratti to Pennyweight (dwt) Ratti to Momme (mom) Ratti to Mace (mace) Ratti to Dram (apothecary/troy) (dr ap) Ratti to Troy Ounce (oz t) Ratti to Tael (tael) Ratti to Pound (troy/apothecary) (lb t)
Indian / South Asian (5 units)
Ratti to Masha (masha) Ratti to Tola (tola) Ratti to Chittack (Chatank) (chittack) Ratti to Seer (Ser) (seer) Ratti to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Ratti to Electron Mass (rest) (me) Ratti to MeV/c2 (MeV/c²) Ratti to Muon Mass (mµ) Ratti to Atomic Mass Unit (u) Ratti to Proton Mass (mp) Ratti to Neutron Mass (mn) Ratti to Deuteron Mass (md) Ratti to Carbon-12 Atom Mass (C-12) Ratti to Planck Mass (mP)
Astronomical (4 units)
Ratti to Lunar Mass (Moon) (M☾) Ratti to Earth's Mass (M⊕) Ratti to Jupiter Mass (MJ) Ratti to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Ratti to Lepton (Biblical Roman) (lepton) Ratti to Quadrans (Biblical Roman) (quadrans) Ratti to Assarion (Biblical Roman) (assarion) Ratti to Gerah (Biblical Hebrew) (gerah) Ratti to Drachma (Biblical Greek) (drachma) Ratti to Denarius (Biblical Roman) (denarius) Ratti to Bekan (Biblical Hebrew) (bekah) Ratti to Didrachma (Biblical Greek) (didrachma) Ratti to Shekel (Biblical Hebrew) (shekel) Ratti to Tetradrachma (Biblical Greek) (tetra) Ratti to Mina (Biblical Greek) (mina) Ratti to Mina (Biblical Hebrew) (mina) Ratti to Talent (Biblical Greek) (talent) Ratti to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Ratti to Poundal (pdl) Ratti to Ton (assay) (US) (AT) Ratti to Ton (assay) (UK) (AT) Ratti to Kilogram-force square second/meter (hyl) Ratti to Slug (slug)

Sources & references

Conversion factor (1 ratti = 0.0039063157 oz t) verified against the following authoritative sources:

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