How to Convert Carats to Kati (catty) (ct 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 carats into kati (catty) by hand, with examples and a quick-reference table.
The conversion
To convert carats to kati (catty), multiply the value by 0.0003306933. To go the other way, divide by the same number (or multiply by 3,023.95). Because the factor is tiny, scientific notation keeps the numbers manageable.
Kati (catty) = carats × 0.0003306933
Worked examples
- 3 ct = 0.000992 kati
- 12.5 ct = 0.004134 kati
- 75 ct = 0.024802 kati
Carats to Kati (catty) table
| Carats | Kati (catty) |
|---|---|
| 1 ct | 0.000331 kati |
| 2 ct | 0.000661 kati |
| 5 ct | 0.001653 kati |
| 10 ct | 0.003307 kati |
| 20 ct | 0.006614 kati |
| 25 ct | 0.008267 kati |
| 50 ct | 0.016535 kati |
| 100 ct | 0.033069 kati |
| 250 ct | 0.082673 kati |
| 500 ct | 0.165347 kati |
| 1,000 ct | 0.330693 kati |
Common questions
Is ct 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 Carats converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
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.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
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.
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.
For any value, use the Carats to Kati (catty) Converter or browse all weight converters.
Run your own numbers: Carats to Kati (catty) Converter