Convert Jin (Catty) (斤) to Kilograms (kg)
The jin (斤), or catty, is the everyday market weight unit across China — vegetables, fruit and meat are all priced per jin. Since China's 1959 metric reform, 1 jin = 0.5 kg exactly, which makes this one of the cleanest conversions there is: just halve the number.
Formula
1 斤 = 0.5 kg
To convert 斤 to kg, divide the value by 2.
Conversion Table
| Jin (Catty) (斤) | Kilograms (kg) |
|---|---|
| 0.01 斤 | 0.005 kg |
| 0.1 斤 | 0.05 kg |
| 0.5 斤 | 0.25 kg |
| 1 斤 | 0.5 kg |
| 2 斤 | 1 kg |
| 3 斤 | 1.5 kg |
| 5 斤 | 2.5 kg |
| 10 斤 | 5 kg |
| 15 斤 | 7.5 kg |
| 20 斤 | 10 kg |
| 25 斤 | 12.5 kg |
| 50 斤 | 25 kg |
| 100 斤 | 50 kg |
| 250 斤 | 125 kg |
| 500 斤 | 250 kg |
| 1000 斤 | 500 kg |
| 2500 斤 | 1250 kg |
| 5000 斤 | 2500 kg |
| 10000 斤 | 5000 kg |
| 50000 斤 | 25000 kg |
Common 斤 to kg Examples
- 1 斤 = 0.5 kg
- 5 斤 = 2.5 kg
- 10 斤 = 5 kg
- 25 斤 = 12.5 kg
- 50 斤 = 25 kg
- 100 斤 = 50 kg
- 500 斤 = 250 kg
- 1000 斤 = 500 kg
About 斤 to kg
Mainland China defines the shìjīn (市斤) as exactly 500 g, so 2 jin = 1 kg and 10 jin = 5 kg. Historically a jin was divided into 16 liǎng (两); the modern jin is 10 liǎng of 50 g each.
Be careful outside the mainland: the Taiwan catty (台斤) is 600 g and the Hong Kong catty is about 604.79 g, so "one jin" of tea can weigh three different amounts depending on where you buy it. This converter uses the 500 g mainland jin.
Frequently Asked Questions
How many kilograms is 1 jin?
Exactly 0.5 kg — the mainland Chinese jin was fixed at 500 grams in 1959, so 2 jin equal 1 kilogram.
Is a jin the same in China, Taiwan and Hong Kong?
No. The mainland jin is 500 g, the Taiwan catty (台斤) is 600 g, and the Hong Kong catty is about 604.79 g. This converter uses the 500 g mainland jin.
Can I convert large numbers of 斤 to kg at once?
Yes. The same ratio 0.5 applies to any value, whether it is a fraction or millions of 斤.
Is there a shortcut for converting 斤 to kg?
The shortest route is the formula itself: 1 斤 = 0.5 kg. Memorizing this single line covers every case.
How much is 1 斤 in kg?
1 斤 equals 0.5 kg. This ratio applies to every conversion between the two units.
What is the formula to convert 斤 to kg?
The formula is 1 斤 = 0.5 kg. To convert any value, divide the value by 2.
How do I convert 斤 to kg by hand?
Take the value in 斤 and divide the value by 2. The result is the same value expressed in kg.
Is the conversion from 斤 to kg exact?
The ratio 0.5 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.