Convert Troy Ounce to Ratti
Convert troy ounces to rattis instantly. 1 troy ounce = 255.9956938272 ratti — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ratti to Troy Ounce converter for the reverse conversion.
Units explained
Troy Ounce
The troy ounce (ozt) equals about 31.103 grams, one-twelfth of a troy pound.
From the Troy system of weights associated with Troyes, France.
The global standard for pricing gold, silver, platinum, and palladium.
Established in the medieval Troy system and retained for precious metals.
Ratti
The ratti equals about 0.1215 gram, the smallest traditional South Asian weight.
Based on the seed of the Gunja plant (Abrus precatorius), or 'raktika' in Sanskrit.
Gemstones and gold in Indian and South Asian jewelry.
One of the oldest weight units of the Indian subcontinent, later standardized.
Troy Ounce 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 troy ounces and rattis:
To convert troy ounces to rattis, multiply the value in troy ounces by 255.9956938272. To reverse, multiply rattis by 0.0039063157.
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 Troy Ounce converter for the reverse direction.
Step-by-step: convert troy ounces to rattis
- Write down the value in troy ounces (oz t).
- Multiply that value by the factor 255.9956938272.
- The product is the equivalent value in rattis (ratti).
- To reverse, multiply the ratti value by 0.0039063157.
Worked examples
Example 1 — Convert 1 oz t to ratti:
1 × 255.9956938272 = 255.9956938272 ratti
Example 2 — Convert 100 oz t to ratti:
100 × 255.9956938272 = 25599.5693827161 ratti
Real-world example — Adjacent metric sub-units
One troy ounce equals 1,000 rattis. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 oz t × 255.9956938272 = 255.9956938272 ratti
Real-world example — Adjacent small-scale precision
One troy ounce 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 oz t × 255.9956938272 = 255.9956938272 ratti
Troy Ounce to Ratti conversion table
Standard reference values for converting troy ounces to rattis:
| Troy Ounce [oz t] | Ratti [ratti] |
|---|---|
| 0.01 | 2.5599569383 |
| 0.1 | 25.5995693827 |
| 1 | 255.9956938272 |
| 2 | 511.9913876543 |
| 3 | 767.9870814815 |
| 4 | 1023.9827753086 |
| 5 | 1279.9784691358 |
| 10 | 2559.9569382716 |
| 20 | 5119.9138765432 |
| 30 | 7679.8708148148 |
| 40 | 10239.8277530864 |
| 50 | 12799.784691358 |
| 100 | 25599.5693827161 |
| 500 | 127997.8469135803 |
| 1000 | 255995.6938271605 |
Frequently asked questions
How many rattis is 1 troy ounce?
How do I convert troy ounces to rattis?
How do I convert rattis back to troy ounces?
How many rattis is 100 troy ounces?
Popular weight unit conversions
Convert Troy Ounce to other weight units
Show all Troy Ounce conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 oz t = 255.9956938272 ratti) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.