| zettasecond | 1 Zs | 2 Zs | 3 Zs | 4 Zs | 5 Zs | 6 Zs | 7 Zs | 8 Zs | 9 Zs | 10 Zs | 11 Zs | 12 Zs | 13 Zs | 14 Zs | 15 Zs | 16 Zs | 17 Zs | 18 Zs | 19 Zs | 20 Zs | 21 Zs | 22 Zs | 23 Zs | 24 Zs | 25 Zs | 26 Zs | 27 Zs | 28 Zs | 29 Zs | 30 Zs | 31 Zs | 32 Zs | 33 Zs | 34 Zs | 35 Zs | 36 Zs | 37 Zs | 38 Zs | 39 Zs | 40 Zs | 41 Zs | 42 Zs | 43 Zs | 44 Zs | 45 Zs | 46 Zs | 47 Zs | 48 Zs | 49 Zs | 50 Zs | 51 Zs | 52 Zs | 53 Zs | 54 Zs | 55 Zs | 56 Zs | 57 Zs | 58 Zs | 59 Zs | 60 Zs | 61 Zs | 62 Zs | 63 Zs | 64 Zs | 65 Zs | 66 Zs | 67 Zs | 68 Zs | 69 Zs | 70 Zs | 71 Zs | 72 Zs | 73 Zs | 74 Zs | 75 Zs | 76 Zs | 77 Zs | 78 Zs | 79 Zs | 80 Zs | 81 Zs | 82 Zs | 83 Zs | 84 Zs | 85 Zs | 86 Zs | 87 Zs | 88 Zs | 89 Zs | 90 Zs | 91 Zs | 92 Zs | 93 Zs | 94 Zs | 95 Zs | 96 Zs | 97 Zs | 98 Zs | 99 Zs | 100 Zs |
| helek | 3.0 × 1020 helek | 6.0 × 1020 helek | 9.0 × 1020 helek | 1.2 × 1021 helek | 1.5 × 1021 helek | 1.8 × 1021 helek | 2.1 × 1021 helek | 2.4 × 1021 helek | 2.7 × 1021 helek | 3.0 × 1021 helek | 3.3 × 1021 helek | 3.6 × 1021 helek | 3.9 × 1021 helek | 4.2 × 1021 helek | 4.5 × 1021 helek | 4.8 × 1021 helek | 5.1 × 1021 helek | 5.4 × 1021 helek | 5.7 × 1021 helek | 6.0 × 1021 helek | 6.3 × 1021 helek | 6.6 × 1021 helek | 6.9 × 1021 helek | 7.2 × 1021 helek | 7.5 × 1021 helek | 7.8 × 1021 helek | 8.1 × 1021 helek | 8.4 × 1021 helek | 8.7 × 1021 helek | 9.0 × 1021 helek | 9.3 × 1021 helek | 9.6 × 1021 helek | 9.9 × 1021 helek | 1.02 × 1022 helek | 1.05 × 1022 helek | 1.08 × 1022 helek | 1.11 × 1022 helek | 1.14 × 1022 helek | 1.17 × 1022 helek | 1.2 × 1022 helek | 1.23 × 1022 helek | 1.26 × 1022 helek | 1.29 × 1022 helek | 1.32 × 1022 helek | 1.35 × 1022 helek | 1.38 × 1022 helek | 1.41 × 1022 helek | 1.44 × 1022 helek | 1.47 × 1022 helek | 1.5 × 1022 helek | 1.53 × 1022 helek | 1.56 × 1022 helek | 1.59 × 1022 helek | 1.62 × 1022 helek | 1.65 × 1022 helek | 1.68 × 1022 helek | 1.71 × 1022 helek | 1.74 × 1022 helek | 1.77 × 1022 helek | 1.8 × 1022 helek | 1.83 × 1022 helek | 1.86 × 1022 helek | 1.89 × 1022 helek | 1.92 × 1022 helek | 1.95 × 1022 helek | 1.98 × 1022 helek | 2.01 × 1022 helek | 2.04 × 1022 helek | 2.07 × 1022 helek | 2.1 × 1022 helek | 2.13 × 1022 helek | 2.16 × 1022 helek | 2.19 × 1022 helek | 2.22 × 1022 helek | 2.25 × 1022 helek | 2.28 × 1022 helek | 2.31 × 1022 helek | 2.34 × 1022 helek | 2.37 × 1022 helek | 2.4 × 1022 helek | 2.43 × 1022 helek | 2.46 × 1022 helek | 2.49 × 1022 helek | 2.52 × 1022 helek | 2.55 × 1022 helek | 2.58 × 1022 helek | 2.61 × 1022 helek | 2.64 × 1022 helek | 2.67 × 1022 helek | 2.7 × 1022 helek | 2.73 × 1022 helek | 2.76 × 1022 helek | 2.79 × 1022 helek | 2.82 × 1022 helek | 2.85 × 1022 helek | 2.88 × 1022 helek | 2.91 × 1022 helek | 2.94 × 1022 helek | 2.97 × 1022 helek | 3.0 × 1022 helek |
Zettasecond is equal to 1021 second (unit of time), comes from a combination of the metric prefix zetta (Z) with the second (s). Plural name is zettaconds with symbol is Zs.
| 1 zettaseconds = 3.0E+20 heleks | 6 zettaseconds = 1.8E+21 heleks |
| 2 zettaseconds = 6.0E+20 heleks | 7 zettaseconds = 2.1E+21 heleks |
| 3 zettaseconds = 9.0E+20 heleks | 8 zettaseconds = 2.4E+21 heleks |
| 4 zettaseconds = 1.2E+21 heleks | 9 zettaseconds = 2.7E+21 heleks |
| 5 zettaseconds = 1.5E+21 heleks | 10 zettaseconds = 3.0E+21 heleks |
A helek is 3⅓ seconds or 1/18 minute.
| 1 heleks = 3.3333333333333E-21 zettaseconds | 6 heleks = 2.0E-20 zettaseconds |
| 2 heleks = 6.6666666666667E-21 zettaseconds | 7 heleks = 2.3333333333333E-20 zettaseconds |
| 3 heleks = 1.0E-20 zettaseconds | 8 heleks = 2.6666666666667E-20 zettaseconds |
| 4 heleks = 1.3333333333333E-20 zettaseconds | 9 heleks = 3.0E-20 zettaseconds |
| 5 heleks = 1.6666666666667E-20 zettaseconds | 10 heleks = 3.3333333333333E-20 zettaseconds |
| 1 zettaseconds = 3.0 × 1020 heleks |
| 1 heleks = 3.3333333333333 × 10-21 zettaseconds |