| zeptobarn | 1 zb | 2 zb | 3 zb | 4 zb | 5 zb | 6 zb | 7 zb | 8 zb | 9 zb | 10 zb | 11 zb | 12 zb | 13 zb | 14 zb | 15 zb | 16 zb | 17 zb | 18 zb | 19 zb | 20 zb | 21 zb | 22 zb | 23 zb | 24 zb | 25 zb | 26 zb | 27 zb | 28 zb | 29 zb | 30 zb | 31 zb | 32 zb | 33 zb | 34 zb | 35 zb | 36 zb | 37 zb | 38 zb | 39 zb | 40 zb | 41 zb | 42 zb | 43 zb | 44 zb | 45 zb | 46 zb | 47 zb | 48 zb | 49 zb | 50 zb | 51 zb | 52 zb | 53 zb | 54 zb | 55 zb | 56 zb | 57 zb | 58 zb | 59 zb | 60 zb | 61 zb | 62 zb | 63 zb | 64 zb | 65 zb | 66 zb | 67 zb | 68 zb | 69 zb | 70 zb | 71 zb | 72 zb | 73 zb | 74 zb | 75 zb | 76 zb | 77 zb | 78 zb | 79 zb | 80 zb | 81 zb | 82 zb | 83 zb | 84 zb | 85 zb | 86 zb | 87 zb | 88 zb | 89 zb | 90 zb | 91 zb | 92 zb | 93 zb | 94 zb | 95 zb | 96 zb | 97 zb | 98 zb | 99 zb | 100 zb |
| decare | 1.0 × 10-52 Da | 2.0 × 10-52 Da | 3.0 × 10-52 Da | 4.0 × 10-52 Da | 5.0 × 10-52 Da | 6.0 × 10-52 Da | 7.0 × 10-52 Da | 8.0 × 10-52 Da | 9.0 × 10-52 Da | 1.0 × 10-51 Da | 1.1 × 10-51 Da | 1.2 × 10-51 Da | 1.3 × 10-51 Da | 1.4 × 10-51 Da | 1.5 × 10-51 Da | 1.6 × 10-51 Da | 1.7 × 10-51 Da | 1.8 × 10-51 Da | 1.9 × 10-51 Da | 2.0 × 10-51 Da | 2.1 × 10-51 Da | 2.2 × 10-51 Da | 2.3 × 10-51 Da | 2.4 × 10-51 Da | 2.5 × 10-51 Da | 2.6 × 10-51 Da | 2.7 × 10-51 Da | 2.8 × 10-51 Da | 2.9 × 10-51 Da | 3.0 × 10-51 Da | 3.1 × 10-51 Da | 3.2 × 10-51 Da | 3.3 × 10-51 Da | 3.4 × 10-51 Da | 3.5 × 10-51 Da | 3.6 × 10-51 Da | 3.7 × 10-51 Da | 3.8 × 10-51 Da | 3.9 × 10-51 Da | 4.0 × 10-51 Da | 4.1 × 10-51 Da | 4.2 × 10-51 Da | 4.3 × 10-51 Da | 4.4 × 10-51 Da | 4.5 × 10-51 Da | 4.6 × 10-51 Da | 4.7 × 10-51 Da | 4.8 × 10-51 Da | 4.9 × 10-51 Da | 5.0 × 10-51 Da | 5.1 × 10-51 Da | 5.2 × 10-51 Da | 5.3 × 10-51 Da | 5.4 × 10-51 Da | 5.5 × 10-51 Da | 5.6 × 10-51 Da | 5.7 × 10-51 Da | 5.8 × 10-51 Da | 5.9 × 10-51 Da | 6.0 × 10-51 Da | 6.1 × 10-51 Da | 6.2 × 10-51 Da | 6.3 × 10-51 Da | 6.4 × 10-51 Da | 6.5 × 10-51 Da | 6.6 × 10-51 Da | 6.7 × 10-51 Da | 6.8 × 10-51 Da | 6.9 × 10-51 Da | 7.0 × 10-51 Da | 7.1 × 10-51 Da | 7.2 × 10-51 Da | 7.3 × 10-51 Da | 7.4 × 10-51 Da | 7.5 × 10-51 Da | 7.6 × 10-51 Da | 7.7 × 10-51 Da | 7.8 × 10-51 Da | 7.9 × 10-51 Da | 8.0 × 10-51 Da | 8.1 × 10-51 Da | 8.2 × 10-51 Da | 8.3 × 10-51 Da | 8.4 × 10-51 Da | 8.5 × 10-51 Da | 8.6 × 10-51 Da | 8.7 × 10-51 Da | 8.8 × 10-51 Da | 8.9 × 10-51 Da | 9.0 × 10-51 Da | 9.1 × 10-51 Da | 9.2 × 10-51 Da | 9.3 × 10-51 Da | 9.4 × 10-51 Da | 9.5 × 10-51 Da | 9.6 × 10-51 Da | 9.7 × 10-51 Da | 9.8 × 10-51 Da | 9.9 × 10-51 Da | 1.0 × 10-50 Da |
A zeptobarn (symbol: zb) is a unit of area equal to 10−49 m2.
| 1 zeptobarns ≡ 1.0E-52 decares | 6 zeptobarns ≡ 6.0E-52 decares |
| 2 zeptobarns ≡ 2.0E-52 decares | 7 zeptobarns ≡ 7.0E-52 decares |
| 3 zeptobarns ≡ 3.0E-52 decares | 8 zeptobarns ≡ 8.0E-52 decares |
| 4 zeptobarns ≡ 4.0E-52 decares | 9 zeptobarns ≡ 9.0E-52 decares |
| 5 zeptobarns ≡ 5.0E-52 decares | 10 zeptobarns ≡ 1.0E-51 decares |
The decare (/ˈdɛkɑːr/ or /ˈdɛkɛər/) is derived from deca and are, and is equal to 10 ares or 1000 square metres. It is used in Norway and in the former Ottoman areas of the Middle East and the Balkans (Bulgaria) as a measure of land area. Instead of the name "decare", the names of traditional land measures are usually used, redefined as one decare:
| 1 decares ≡ 1.0E+52 zeptobarns | 6 decares ≡ 6.0E+52 zeptobarns |
| 2 decares ≡ 2.0E+52 zeptobarns | 7 decares ≡ 7.0E+52 zeptobarns |
| 3 decares ≡ 3.0E+52 zeptobarns | 8 decares ≡ 8.0E+52 zeptobarns |
| 4 decares ≡ 4.0E+52 zeptobarns | 9 decares ≡ 9.0E+52 zeptobarns |
| 5 decares ≡ 5.0E+52 zeptobarns | 10 decares ≡ 1.0E+53 zeptobarns |
| 1 zeptobarns ≡ 1.0 × 10-52 decares |
| 1 decares ≡ 1.0 × 1052 zeptobarns |