Use this free online calculator to convert Rood to Ken [Japan] instantly. This area conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Rood = 556.4984 Ken [Japan]

1 Ken [Japan] = 1.797e-3 Rood

Rood to Ken [Japan] Conversion Formula

To convert Rood to Ken [Japan], multiply by 556.4984.

Ken [Japan] = Rood × 556.4984

Rood = Ken [Japan] × 1.797e-3

To convert Ken [Japan] back to Rood, divide by 556.4984 (or multiply by 1.797e-3).

About These Units

About Rood

The rood is a a traditional unit of area used to measure land. A rood is the area of a narrow strip of land one furlong (40 rods, or 660 feet) long and one rod (16.5 feet) wide. Thus the rood is equal to 40 square rods (or perches), which equals 1210 square yards, or 10 890 square feet, or exactly 1/4 acre. That would be the area of a lot 22 yards wide and 55 yards deep, about the size of many suburban lots. One rood is approximately 1011.714 square meters, or 0.101 171 4 hectare.

About Ken [Japan]

The ken is a traditional Japanese unit of length equal to six shaku (Japanese feet), standardized at 1.818 meters. It is fundamental to Japanese architecture, serving as the standard interval between pillars in traditional buildings. The ken is also used for tatami mat dimensions, martial arts equipment like the bō staff, and historical land taxation measurements.

Rood to Ken [Japan] Conversion Table

Rood	Ken [Japan]	Ken [Japan]	Rood
0.1	55.6498	0.1	1.797e-4
0.5	278.2492	0.5	8.985e-4
1	556.4984	1	1.797e-3
2	1113.00	2	3.594e-3
5	2782.49	5	8.985e-3
10	5564.98	10	0.017970
20	11129.97	20	0.035939
25	13912.46	25	0.044924
50	27824.92	50	0.089848
100	55649.84	100	0.179695
250	139124.60	250	0.449238
500	278249.20	500	0.898475
1000	556498.40	1000	1.7970

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