tatami mat to square foot

Live tatami mat (畳) to square foot (ft²) converter. Plus a 10-value reference table and FAQs.

tatami mat
square foot
1 畳 = 17.8272ft²

Conversion table

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

tatami mat (畳)square foot (ft²)
0.001 0.017827 ft²
0.01 0.178272 ft²
0.1 1.782719 ft²
0.5 8.913594 ft²
1 17.827188 ft²
2 35.654377 ft²
5 89.135942 ft²
10 178.271884 ft²
100 1,782.718843 ft²
1,000 17,827.188432 ft²

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 foot

US floor area, real estate.

Frequently asked questions

Frequently Asked Questions

How do I convert tatami mat to square foot?

Multiply the tatami mat value by 17.827188 to get it in square foot. For example, 10 畳 = 178.2719 ft².

What is 1 畳 in ft²?

1 畳 = 17.827188 ft².

What is 100 畳 in ft²?

100 畳 = 1,782.7188 ft².

What is the formula?

Linear: multiply by 17.827188 (the unit factor ratio).

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