Convert Ratti to Stone (US)
Convert rattis to stones (us) instantly. 1 ratti = 2.142893e-5 stone (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Stone (US) to Ratti converter for the reverse conversion.
Units explained
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.
Stone (US)
A less common US definition of the stone, about 5.67 kilograms.
A variant stone weight used in some historical US trade.
Rare; appears mainly in historical or specialized contexts.
Derived from older English stone weights that varied by commodity.
Ratti to Stone (US) 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 stones (us):
To convert rattis to stones (us), multiply the value in rattis by 2.142893e-5. To reverse, multiply stones (us) by 46665.8816872428.
How to use this converter
Type a value into the calculator. The result in stones (us) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Stone (US) to Ratti converter for the reverse direction.
Step-by-step: convert rattis to stones (us)
- Write down the value in rattis (ratti).
- Multiply that value by the factor 2.142893e-5.
- The product is the equivalent value in stones (us) (st).
- To reverse, multiply the stone (us) value by 46665.8816872428.
Worked examples
Example 1 — Convert 1 ratti to st:
1 × 2.142893e-5 = 2.142893e-5 st
Example 2 — Convert 100 ratti to st:
100 × 2.142893e-5 = 0.0021428932 st
Real-world example — Macro-scale buildup
A million rattis equals exactly one stone (us) — the conversion that bridges microscale features and macroscale objects in microfluidic, biomedical, and semiconductor packaging design.
1000000 ratti × 2.142893e-5 = 21.4289318844 st
Real-world example — Quarter-meter measurement reference
A 250,000-ratti length equals 0.25 stones (us) — useful for comparing supply-chain spec sheets where some lengths are quoted in the smaller unit and some in the larger.
250000 ratti × 2.142893e-5 = 5.3572329711 st
Real-world example — From microscopic to macroscopic
A million rattis equals exactly one stone (us). This kind of conversion appears in microfluidics, where total channel length is given in stones (us) but feature widths are in rattis.
1000000 ratti × 2.142893e-5 = 21.4289318844 st
Ratti to Stone (US) conversion table
Standard reference values for converting rattis to stones (us):
| Ratti [ratti] | Stone (US) [st] |
|---|---|
| 0.01 | 2.142893e-7 |
| 0.1 | 2.142893e-6 |
| 1 | 2.142893e-5 |
| 2 | 4.285786e-5 |
| 3 | 6.42868e-5 |
| 4 | 8.571573e-5 |
| 5 | 0.0001071447 |
| 10 | 0.0002142893 |
| 20 | 0.0004285786 |
| 30 | 0.000642868 |
| 40 | 0.0008571573 |
| 50 | 0.0010714466 |
| 100 | 0.0021428932 |
| 500 | 0.0107144659 |
| 1000 | 0.0214289319 |
Frequently asked questions
How many stones (us) is 1 ratti?
How do I convert rattis to stones (us)?
How do I convert stones (us) back to rattis?
How many stones (us) is 100 rattis?
Popular weight unit conversions
Convert Ratti to other weight units
Show all Ratti conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (5 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 ratti = 2.142893e-5 st) 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.