How to Convert Stone to Kati (catty) (st to kati)
Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds. This guide shows how to convert stone into kati (catty) by hand, with examples and a quick-reference table.
The conversion
To convert stone to kati (catty), multiply the value by 10.4999969907. To go the other way, divide by the same number (or multiply by 0.0952381225). For a quick estimate, multiply by about 10.
Kati (catty) = stone × 10.4999969907
Worked examples
- 3 st = 31.5 kati
- 12.5 st = 131.25 kati
- 75 st = 787.4998 kati
Stone to Kati (catty) table
| Stone | Kati (catty) |
|---|---|
| 1 st | 10.5 kati |
| 2 st | 21 kati |
| 5 st | 52.5 kati |
| 10 st | 105 kati |
| 20 st | 209.9999 kati |
| 25 st | 262.4999 kati |
| 50 st | 524.9998 kati |
| 100 st | 1,050 kati |
| 250 st | 2,625 kati |
| 500 st | 5,250 kati |
| 1,000 st | 10,500 kati |
Common questions
Is st to kati exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Kati (catty) to Stone converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
For any value, use the Stone to Kati (catty) Converter or browse all weight converters.
Run your own numbers: Stone to Kati (catty) Converter