Se to Square Meters (se to m²)
1 se equals 99.17355372 square meters (rounded).
How to convert se to square meters
To convert se to square meters, multiply the number of se by 99.17355372. The factor is rounded to 10 significant digits. To go the other way, multiply square meters by 0.01008333333 (rounded).
square meters = se × 99.17355372
Example: 10 se = 991.7355372 square meters.
About these units
Se (se)
30 tsubo, about 99.17 m².
Between the humble tsubo and the field-sized tan sits the se, a plot of 30 tsubo. In square metres that is exactly 12,000/121, or about 99.17, which is just under one are, the metric land unit of 100 square metres. A se measures roughly ten metres by ten, a small garden or a slice of a paddy.
The scale is decimal above this point. Ten se make one tan, and a hundred se make one cho, so the se works as the first step in the farmland ladder rather than a unit with a life of its own. Property listings today seldom use it, and it is mostly met in old land records and in conversion tables.
Its exact size comes from the Meiji legal definition. The 1891 law set the shaku at 10/33 metre, and the tsubo as the square of six shaku, so every larger land unit built on the tsubo inherited a fixed metric value. Before that, the shaku itself varied by era and use.
1 se = 99.17355372 square meters (approximately).
Sources: Wikipedia: Japanese units of measurement; Wikipedia: Shaku (unit); Wikipedia: Tsubo
Square Meter (m²)
The SI unit of area: a square one meter on each side. Used for floor areas and property sizes in most of the world.
Squaring the meter was built into the metric system from the start. The French law of 18 Germinal, Year III (7 April 1795) defined the are, the land unit that gave the hectare its name, as exactly 100 square meters, so the square meter was already the foundation of metric land measure. Nobody is credited with inventing it as a separate unit. It is simply the area of a square one meter on each side, and any SI prefix that works for the meter works for it, with the prefix squared along with the unit.
That squaring catches people out: a square kilometer is one million square meters, not one thousand. Since 1983 the meter has been defined through the speed of light, so the square meter is tied to a constant of nature as well as to the second. A hectare, about the area of Trafalgar Square in London, is 10,000 square meters. In everyday terms one square meter is about 10.76 square feet. Unicode has a compatibility character for it, but the recommended way to write it is the plain superscript two: m².
The square meter is the reference unit for area on this site.
Sources: Wikipedia: Square metre; Wikipedia: Are (unit); NIST: the meter and the SI redefinition
Related conversions
- Square meters to se (reverse)
- Se to square kilometers
- Se to hectares
- Se to square inches
- Se to square feet
- Se to square yards
- Se to acres
- Se to square miles
- Square kilometers to square meters
- Hectares to square meters
- Square inches to square meters
- Square feet to square meters
- Square yards to square meters
- Acres to square meters
- Square miles to square meters
- Square centimeters to square meters
- Square millimeters to square meters
- Tsubo to square meters
- Pyeong to square meters
- Rai (Thai) to square meters
See all area units.