| 1 tatami | = 1.9375038750078 yd2, sq yd |
| 2 tatami | = 3.8750077500155 yd2, sq yd |
| 3 tatami | = 5.8125116250233 yd2, sq yd |
| 4 tatami | = 7.750015500031 yd2, sq yd |
| 5 tatami | = 9.6875193750388 yd2, sq yd |
| 6 tatami | = 11.625023250047 yd2, sq yd |
| 7 tatami | = 13.562527125054 yd2, sq yd |
| 8 tatami | = 15.500031000062 yd2, sq yd |
| 9 tatami | = 17.43753487507 yd2, sq yd |
| 10 tatami | = 19.375038750078 yd2, sq yd |
| 20 tatami | = 38.750077500155 yd2, sq yd |
| 30 tatami | = 58.125116250233 yd2, sq yd |
| 40 tatami | = 77.50015500031 yd2, sq yd |
| 50 tatami | = 96.875193750387 yd2, sq yd |
| 60 tatami | = 116.25023250047 yd2, sq yd |
| 70 tatami | = 135.62527125054 yd2, sq yd |
| 80 tatami | = 155.00031000062 yd2, sq yd |
| 90 tatami | = 174.3753487507 yd2, sq yd |
| 100 tatami | = 193.75038750077 yd2, sq yd |
| 200 tatami | = 387.50077500155 yd2, sq yd |
| 300 tatami | = 581.25116250233 yd2, sq yd |
| 400 tatami | = 775.0015500031 yd2, sq yd |
| 500 tatami | = 968.75193750388 yd2, sq yd |
| 600 tatami | = 1162.5023250047 yd2, sq yd |
| 700 tatami | = 1356.2527125054 yd2, sq yd |
| 800 tatami | = 1550.0031000062 yd2, sq yd |
| 900 tatami | = 1743.753487507 yd2, sq yd |
| 1000 tatami | = 1937.5038750078 yd2, sq yd |
| 2000 tatami | = 3875.0077500155 yd2, sq yd |
| 4000 tatami | = 7750.015500031 yd2, sq yd |
| 5000 tatami | = 9687.5193750388 yd2, sq yd |
| 7500 tatami | = 14531.279062558 yd2, sq yd |
| 10000 tatami | = 19375.038750078 yd2, sq yd |
| 25000 tatami | = 48437.596875194 yd2, sq yd |
| 50000 tatami | = 96875.193750388 yd2, sq yd |
| 100000 tatami | = 193750.38750078 yd2, sq yd |
| 1000000 tatami | = 1937503.8750078 yd2, sq yd |
| 1000000000 tatami | = 1937503875.0078 yd2, sq yd |