# Shao (unit)

A shao (Chinese: 勺; pinyin: sháo) in China, shaku in Japan and jak in Korea, is a unit of volume measurement in East Asia. One shao equals 1⁄100 sheng. It is 10 mL (millilitres) in China, 18.04 mL in Japan and 18 mL in Korea. Shao' is also a unit of area equal to 0.033 square meters (a hundredth of a tsubo) in Japan and Korea.
The Chinese word shao (勺) means a spoon, or an amount held by a spoon.

## China

Volume units effective since 1930 in China :
| Pinyin | Character | Relative value | Metric value | US value | Imperial value | Notes |
| cuō | 撮 | 1⁄1000 | 1 mL | 0.0338 fl oz | 0.0352 fl oz | millilitre |
| sháo | 勺 | 1⁄100 | 10 mL | 0.3381 fl oz | 0.3520 fl oz | centilitre |
| gě | 合 | 1⁄10 | 100 mL | 3.381 fl oz | 3.520 fl oz | decilitre |
| shēng | 市升 | 1 | 1 L | 2.113 pt | 1.760 pt | litre |
| dǒu | 市斗 | 10 | 10 L | 21.13 pt 2.64 gal | 17.60 pt 2.20 gal | decalitre |
| dàn | 市石 | 100 | 100 L | 26.41 gal | 22.0 gal | hectolitre |

## Japan
### Volume

Volume units in Japan :
| Unit | Unit | Shō | Metric | Metric | US | US | Imperial | Imperial |
| Romanized | Kanji | Shō | Exact | Approx. | Exact | Approx. | Exact | Approx. |
| Sai | 才 | 1⁄1000 | ⁠2401/1,331,000⁠ L | 1.804 mL | ⁠37,515,625/15,900,351,812,136⁠ cu yd | 29.28 min | ⁠240,100/605,084,579⁠ gal | 30.47 min |
| Sai | 才 | 1⁄1000 | ⁠2401/1,331,000⁠ L | 1.804 mL | ⁠37,515,625/15,900,351,812,136⁠ cu yd | 0.1101 cu in | ⁠240,100/605,084,579⁠ gal | 30.47 min |
| Shaku | 勺 | 1⁄100 | ⁠2401/133,100⁠ L | 18.04 mL | ⁠187,578,125/7,950,175,906,068⁠ cu yd | 0.6100 fl oz | ⁠2,401,000/605,084,579⁠ gal | 0.6349 fl oz |
| Shaku | 勺 | 1⁄100 | ⁠2401/133,100⁠ L | 18.04 mL | ⁠187,578,125/7,950,175,906,068⁠ cu yd | 1.101 cu in | ⁠2,401,000/605,084,579⁠ gal | 0.6349 fl oz |
| Gō | 合 | 1⁄10 | ⁠2401/13,310⁠ L | 180.4 mL | ⁠937,890,625/3,975,087,953,034⁠ cu yd | 0.3812 pt | ⁠24,010,000/605,084,579⁠ gal | 0.3174 pt |
| Gō | 合 | 1⁄10 | ⁠2401/13,310⁠ L | 180.4 mL | ⁠937,890,625/3,975,087,953,034⁠ cu yd | 0.3276 dry pt | ⁠24,010,000/605,084,579⁠ gal | 0.3174 pt |
| Shō | 升 | 1 | ⁠2401/1331⁠ L | 1.804 L | ⁠4,689,453,125/1,987,543,976,517⁠ cu yd | 1.906 qt | ⁠240,100,000/605,084,579⁠ gal | 1.587 qt |
| Shō | 升 | 1 | ⁠2401/1331⁠ L | 1.804 L | ⁠4,689,453,125/1,987,543,976,517⁠ cu yd | 1.638 dry qt | ⁠240,100,000/605,084,579⁠ gal | 1.587 qt |
| To | 斗 | 10 | ⁠24,010/1331⁠ L | 18.04 L | ⁠46,894,531,250/1,987,543,976,517⁠ cu yd | 4.765 gal | ⁠2,401,000,000/605,084,579⁠ gal | 3.968 gal |
| To | 斗 | 10 | ⁠24,010/1331⁠ L | 18.04 L | ⁠46,894,531,250/1,987,543,976,517⁠ cu yd | 2.048 pk | ⁠2,401,000,000/605,084,579⁠ gal | 3.968 gal |
| Koku | 石 | 100 | ⁠240,100/1331⁠ L | 180.4 L | ⁠468,945,312,500/1,987,543,976,517⁠ cu yd | 47.65 gal | ⁠24,010,000,000/605,084,579⁠ gal | 39.680 gal |
| Koku | 石 | 100 | ⁠240,100/1331⁠ L | 180.4 L | ⁠468,945,312,500/1,987,543,976,517⁠ cu yd | 5.119 bu | ⁠24,010,000,000/605,084,579⁠ gal | 39.680 gal |
| Notes: Approximations are rounded to four significant figures. ||||||||||

### Area

Shao' is also a unit of area equal to 0.033 square meters (a hundredth of a tsubo) in Japan.
Area units in Japan :
| Unit | Unit | Tsubo | Metric | Metric | US & Imperial | US & Imperial |
| Romanized | Kanji | Tsubo | Exact | Approx. | Exact | Approx. |
| Shaku | 勺 | 1⁄100 | ⁠4/121⁠ m$^2$ | 330.6 cm$^2$ | ⁠6,250,000/158,080,329⁠ sq yd | 51.24 sq in |
| Gō | 合 | 1⁄10 | ⁠40/121⁠ m$^2$ | 0.3306 m$^2$ | ⁠62,500,000/158,080,329⁠ sq yd | 3.558 sq ft |
| Jō | 畳 or 帖 | 1⁄2 | ⁠200/121⁠ m$^2$ | 1.653 m$^2$ | ⁠312,500,000/158,080,329⁠ sq yd | 17.79 sq ft |
| Tsubo | 坪 | 1 | ⁠400/121⁠ m$^2$ | 3.306 m$^2$ | ⁠625,000,000/158,080,329⁠ sq yd | 35.58 sq ft |
| Bu | 歩 | 1 | ⁠400/121⁠ m$^2$ | 3.306 m$^2$ | ⁠625,000,000/158,080,329⁠ sq yd | 35.58 sq ft |
| Se | 畝 | 30 | ⁠12,000/121⁠ m$^2$ | 99.17 m$^2$ | ⁠6,250,000,000/52,693,443⁠ sq yd | 1,067 sq ft |
| Tan | 段 or 反 | 300 | ⁠120,000/121⁠ m$^2$ | 991.7 m$^2$ | ⁠62,500,000,000/52,693,443⁠ sq yd | 10,674.6 sq ft |
| Chō(bu) | 町(歩) | 3000 | ⁠1,200,000/121⁠ m$^2$ | 0.9917 ha | ⁠625,000,000,000/52,693,443⁠ sq yd | 2.4505 acres |
| Notes: Approximations are rounded to four significant figures. ||||||||

## Korea

Volume units in Korea :
| Romanization | Romanization | Romanization | Korean | English | Equivalents | Equivalents | Equivalents |
| RR | MR | Other | Korean | English | Doe | Other countries | Global |
| Jak | Chak | | 작(勺) | | 1⁄100 | | 18 mL (0.63 imp fl oz; 0.61 US fl oz) |
| Hop | Hop | | 홉 | | 1⁄10 | Ge | 180 mL (6.3 imp fl oz; 6.1 US fl oz) |
| Doe | Toe | Doi Dwe | 되 | Korean Peck | 1 | | 1.8 L (0.40 imp gal; 0.48 US gal) |
| Seung | Sŭng | | 승(升) | Korean Peck | 1 | | 1.8 L (0.40 imp gal; 0.48 US gal) |
| Mal | Mal | | 말 | Korean Bushel | 10 | | 18 L (4.0 imp gal; 4.8 US gal) |
| Du | Tu | | 두(斗) | Korean Bushel | 10 | | 18 L (4.0 imp gal; 4.8 US gal) |
| Seom | Sŏm | | 섬 | Korean Picul | 100 | Picul | 180 L (40 imp gal; 48 US gal) |
| Seok | Sŏk | Suk | 석(石) | Korean Picul | 100 | Picul | 180 L (40 imp gal; 48 US gal) |
| Jeom | Chŏm | | 점(苫) | Korean Picul | 100 | Picul | 180 L (40 imp gal; 48 US gal) |
| Sogok | Sogok | | 소곡(小斛) | | 150 | | 270 L (59 imp gal; 71 US gal) |
| Pyeongseok | P'yŏngsŏk | | 평석(平石) | | 150 | | 270 L (59 imp gal; 71 US gal) |
| Daegok | Taegok | | 대곡(大斛) | | 200 | | 360 L (79 imp gal; 95 US gal) |
| Jeonseok | Chŏnsŏk | | 전석(全石) | | 200 | | 360 L (79 imp gal; 95 US gal) |
The Korean Jak (勺) can also be a unit of area, equaling 0.0330579 m2 (0.355832 sq ft.)
For more details on volume measurement, please see Sheng (volume)