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tatami mat to square kilometre

Live tatami mat (畳) to square kilometre (km²) converter. Plus a 10-value reference table and FAQs.

From 畳

tatami mat

To km²

square kilometre

1 畳 = 1.66e-6km²

Conversion table

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

tatami mat (畳)	→	square kilometre (km²)
0.001 畳	→	1.6562e-9 km²
0.01 畳	→	1.6562e-8 km²
0.1 畳	→	1.6562e-7 km²
0.5 畳	→	8.2810e-7 km²
1 畳	→	1.6562e-6 km²
2 畳	→	3.3124e-6 km²
5 畳	→	8.2810e-6 km²
10 畳	→	1.6562e-5 km²
100 畳	→	0.000166 km²
1,000 畳	→	0.001656 km²

About the tatami mat

One tatami mat. Edo-period (江戸間) standard 1.6562 m², used here.

Note: Tatami size varies by region: 江戸間 1.6562 m², 中京間 1.7412 m², 京間 1.8181 m². This site converts using the 江戸間 standard.

About the square kilometre

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

How tatami mat 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 畳 = 1.656200e-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.