Square Wa (Thai) to Square Kilometers (sq wa to km²)
1 square wa (Thai) equals 0.000004 square kilometers exactly.
How to convert square wa (Thai) to square kilometers
To convert square wa (Thai) to square kilometers, multiply the number of square wa (Thai) by 0.000004. This factor is exact. To go the other way, multiply square kilometers by 250,000.
square kilometers = square wa (Thai) × 0.000004
Example: 10 square wa (Thai) = 0.00004 square kilometers.
About these units
Square Wa (Thai) (sq wa)
A square 2 meters on a side: exactly 4 m². Thai property prices are often quoted per square wa.
Tarang wa, the Thai name behind the English square wa, literally refers to a grid of wa. It is the smallest standard Thai land unit, the area of a square with sides of one wa, so with a wa of 2 meters it equals 4 square meters.
One hundred square wa form a ngan and 400 form a rai. Because it is so small, it is the unit in which urban plots and condominium-adjacent land are usually priced, and listings often quote a price per square wa.
Its value is the square of the wa, so any change to the wa would flow straight through, but the metric definition has been fixed since the cadastral survey of the Royal Thai Survey Department began in 1896. A typical townhouse lot of 20 square wa is therefore 80 square meters.
1 square wa (Thai) = 4 square meters (exactly).
Sources: Wikipedia: Rai (unit); Wikipedia: Thai units of measurement
Square Kilometer (km²)
One million square meters (100 hectares). Used for the area of cities, countries and lakes.
Metric land measure took a surprisingly long time to settle on the kilometer. The meter was defined in 1799, yet people initially preferred the myriameter, 10,000 meters, and the French phrase myriamètres par heure was still in print in 1802. The Netherlands adopted the kilometer in 1817 under the name mijl. Once the kilometer was established, the square kilometer followed naturally as the unit for areas too large to count comfortably in hectares or square meters.
One square kilometer is 1,000,000 square meters, or 100 hectares, about 0.3861 square miles or 247.1 acres. A useful picture comes from history: many medieval European cities were enclosed by walls around roughly a square kilometer, with Delft at about 0.9 km² and Lucca at about 1.09 km². A standard 18-hole golf course of 6,000 meters needs about 0.8 km². The symbol km² means the square of a kilometer, not a thousand square meters. The planned Square Kilometre Array radio telescope takes its name from the collecting area it aims for.
1 square kilometer = 1,000,000 square meters (exactly).
Sources: Wikipedia: Square kilometre; Wikipedia: Kilometres per hour
Related conversions
- Square kilometers to square wa (Thai) (reverse)
- Square wa (Thai) to square meters
- Square wa (Thai) to hectares
- Square wa (Thai) to square inches
- Square wa (Thai) to square feet
- Square wa (Thai) to square yards
- Square wa (Thai) to acres
- Square wa (Thai) to square miles
- Square meters to square kilometers
- Hectares to square kilometers
- Square inches to square kilometers
- Square feet to square kilometers
- Square yards to square kilometers
- Acres to square kilometers
- Square miles to square kilometers
- Square centimeters to square kilometers
- Square millimeters to square kilometers
- Tsubo to square kilometers
- Pyeong to square kilometers
- Rai (Thai) to square kilometers
See all area units.