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tsubo to square kilometre

Live tsubo (坪) to square kilometre (km²) converter. Plus a 10-value reference table and FAQs.

From 坪

tsubo

To km²

square kilometre

1 坪 = 3.31e-6km²

Conversion table

Ten sample values from tsubo to square kilometre. Use the converter above for arbitrary values.

tsubo (坪)	→	square kilometre (km²)
0.001 坪	→	3.3058e-9 km²
0.01 坪	→	3.3058e-8 km²
0.1 坪	→	3.3058e-7 km²
0.5 坪	→	1.6529e-6 km²
1 坪	→	3.3058e-6 km²
2 坪	→	6.6116e-6 km²
5 坪	→	1.6529e-5 km²
10 坪	→	3.3058e-5 km²
100 坪	→	0.000331 km²
1,000 坪	→	0.003306 km²

About the tsubo

400/121 m² ≈ 3.305785 m². Japanese (and Korean pyeong) land/real-estate area unit.

Note: 1 tsubo = 400/121 m² = 3.305785 m², a 6-shaku × 6-shaku square. Roughly 2 Edo-period tatami mats.

About the square kilometre

100 hectares or 1,000,000 m². Country/city size.

How tsubo to square kilometre conversion works

Both units belong to Area. Unitbox first expresses the input in the category reference unit (m²), then expresses that same quantity in square kilometre.

The right unit depends on the convention used by your industry, country, instrument, or source document.

Reference value1 坪 = 3.305785e-6 km²

CalculationBrowser-side, using Unitbox's shared unit data

Review noteFor safety-critical work, verify against the governing standard or instrument manual.

Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.