Convert Square Kilometer to Tsubo

One km² equals 302,500 tsubo. This converter allows you to easily convert between Square Kilometer and Tsubo in real time.

Formula

km² × 302,500 = tsubo

Example: 1 km² = 302,500 tsubo

What is Square Kilometer?

The square kilometer is a unit of area equal to a square with sides of one kilometer, or 1,000,000 square meters. It is the standard unit for expressing the area of countries, states, cities, and large geographical features. For example, France covers approximately 640,000 km² and Tokyo spans about 2,194 km². In geography, environmental science, and urban planning, square kilometers are used for land-use analysis, forest coverage, and natural reserve boundaries.

What is Tsubo?

The tsubo is a traditional Japanese unit of area equal to exactly 400/121 square meters (approximately 3.306 m²). It originates from the ken-based measurement system, where one tsubo equals one square ken (about 1.818 m × 1.818 m), or the area of two standard tatami mats. In Japanese real estate, land prices are often quoted per tsubo, and property sizes are commonly described in tsubo alongside square meters. Despite Japan's adoption of the metric system, the tsubo remains deeply embedded in the culture of land and housing transactions.