| square hectometer | 1 hm2 | 2 hm2 | 3 hm2 | 4 hm2 | 5 hm2 | 6 hm2 | 7 hm2 | 8 hm2 | 9 hm2 | 10 hm2 | 11 hm2 | 12 hm2 | 13 hm2 | 14 hm2 | 15 hm2 | 16 hm2 | 17 hm2 | 18 hm2 | 19 hm2 | 20 hm2 | 21 hm2 | 22 hm2 | 23 hm2 | 24 hm2 | 25 hm2 | 26 hm2 | 27 hm2 | 28 hm2 | 29 hm2 | 30 hm2 | 31 hm2 | 32 hm2 | 33 hm2 | 34 hm2 | 35 hm2 | 36 hm2 | 37 hm2 | 38 hm2 | 39 hm2 | 40 hm2 | 41 hm2 | 42 hm2 | 43 hm2 | 44 hm2 | 45 hm2 | 46 hm2 | 47 hm2 | 48 hm2 | 49 hm2 | 50 hm2 | 51 hm2 | 52 hm2 | 53 hm2 | 54 hm2 | 55 hm2 | 56 hm2 | 57 hm2 | 58 hm2 | 59 hm2 | 60 hm2 | 61 hm2 | 62 hm2 | 63 hm2 | 64 hm2 | 65 hm2 | 66 hm2 | 67 hm2 | 68 hm2 | 69 hm2 | 70 hm2 | 71 hm2 | 72 hm2 | 73 hm2 | 74 hm2 | 75 hm2 | 76 hm2 | 77 hm2 | 78 hm2 | 79 hm2 | 80 hm2 | 81 hm2 | 82 hm2 | 83 hm2 | 84 hm2 | 85 hm2 | 86 hm2 | 87 hm2 | 88 hm2 | 89 hm2 | 90 hm2 | 91 hm2 | 92 hm2 | 93 hm2 | 94 hm2 | 95 hm2 | 96 hm2 | 97 hm2 | 98 hm2 | 99 hm2 | 100 hm2 |
| attobarn | 1.0 × 1050 ab | 2.0 × 1050 ab | 3.0 × 1050 ab | 4.0 × 1050 ab | 5.0 × 1050 ab | 6.0 × 1050 ab | 7.0 × 1050 ab | 8.0 × 1050 ab | 9.0 × 1050 ab | 1.0 × 1051 ab | 1.1 × 1051 ab | 1.2 × 1051 ab | 1.3 × 1051 ab | 1.4 × 1051 ab | 1.5 × 1051 ab | 1.6 × 1051 ab | 1.7 × 1051 ab | 1.8 × 1051 ab | 1.9 × 1051 ab | 2.0 × 1051 ab | 2.1 × 1051 ab | 2.2 × 1051 ab | 2.3 × 1051 ab | 2.4 × 1051 ab | 2.5 × 1051 ab | 2.6 × 1051 ab | 2.7 × 1051 ab | 2.8 × 1051 ab | 2.9 × 1051 ab | 3.0 × 1051 ab | 3.1 × 1051 ab | 3.2 × 1051 ab | 3.3 × 1051 ab | 3.4 × 1051 ab | 3.5 × 1051 ab | 3.6 × 1051 ab | 3.7 × 1051 ab | 3.8 × 1051 ab | 3.9 × 1051 ab | 4.0 × 1051 ab | 4.1 × 1051 ab | 4.2 × 1051 ab | 4.3 × 1051 ab | 4.4 × 1051 ab | 4.5 × 1051 ab | 4.6 × 1051 ab | 4.7 × 1051 ab | 4.8 × 1051 ab | 4.9 × 1051 ab | 5.0 × 1051 ab | 5.1 × 1051 ab | 5.2 × 1051 ab | 5.3 × 1051 ab | 5.4 × 1051 ab | 5.5 × 1051 ab | 5.6 × 1051 ab | 5.7 × 1051 ab | 5.8 × 1051 ab | 5.9 × 1051 ab | 6.0 × 1051 ab | 6.1 × 1051 ab | 6.2 × 1051 ab | 6.3 × 1051 ab | 6.4 × 1051 ab | 6.5 × 1051 ab | 6.6 × 1051 ab | 6.7 × 1051 ab | 6.8 × 1051 ab | 6.9 × 1051 ab | 7.0 × 1051 ab | 7.1 × 1051 ab | 7.2 × 1051 ab | 7.3 × 1051 ab | 7.4 × 1051 ab | 7.5 × 1051 ab | 7.6 × 1051 ab | 7.7 × 1051 ab | 7.8 × 1051 ab | 7.9 × 1051 ab | 8.0 × 1051 ab | 8.1 × 1051 ab | 8.2 × 1051 ab | 8.3 × 1051 ab | 8.4 × 1051 ab | 8.5 × 1051 ab | 8.6 × 1051 ab | 8.7 × 1051 ab | 8.8 × 1051 ab | 8.9 × 1051 ab | 9.0 × 1051 ab | 9.1 × 1051 ab | 9.2 × 1051 ab | 9.3 × 1051 ab | 9.4 × 1051 ab | 9.5 × 1051 ab | 9.6 × 1051 ab | 9.7 × 1051 ab | 9.8 × 1051 ab | 9.9 × 1051 ab | 1.0 × 1052 ab |
Square hectometre (International spelling as used by the International Bureau of Weights and Measures) or Square hectometer (American spelling) or hectare, symbol hm2, is the unit of area or surface area.
| 1 square hectometers = 1.0E+50 attobarns | 6 square hectometers = 6.0E+50 attobarns |
| 2 square hectometers = 2.0E+50 attobarns | 7 square hectometers = 7.0E+50 attobarns |
| 3 square hectometers = 3.0E+50 attobarns | 8 square hectometers = 8.0E+50 attobarns |
| 4 square hectometers = 4.0E+50 attobarns | 9 square hectometers = 9.0E+50 attobarns |
| 5 square hectometers = 5.0E+50 attobarns | 10 square hectometers = 1.0E+51 attobarns |
A attobarn (symbol: ab) is a unit of area equal to 10−46 m2.
| 1 attobarns = 1.0E-50 square hectometers | 6 attobarns = 6.0E-50 square hectometers |
| 2 attobarns = 2.0E-50 square hectometers | 7 attobarns = 7.0E-50 square hectometers |
| 3 attobarns = 3.0E-50 square hectometers | 8 attobarns = 8.0E-50 square hectometers |
| 4 attobarns = 4.0E-50 square hectometers | 9 attobarns = 9.0E-50 square hectometers |
| 5 attobarns = 5.0E-50 square hectometers | 10 attobarns = 1.0E-49 square hectometers |
| 1 square hectometers = 1.0 × 1050 attobarns |
| 1 attobarns = 1.0 × 10-50 square hectometers |