| zeptosecond | 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 × 10-22 helek | 6.0 × 10-22 helek | 9.0 × 10-22 helek | 1.2 × 10-21 helek | 1.5 × 10-21 helek | 1.8 × 10-21 helek | 2.1 × 10-21 helek | 2.4 × 10-21 helek | 2.7 × 10-21 helek | 3.0 × 10-21 helek | 3.3 × 10-21 helek | 3.6 × 10-21 helek | 3.9 × 10-21 helek | 4.2 × 10-21 helek | 4.5 × 10-21 helek | 4.8 × 10-21 helek | 5.1 × 10-21 helek | 5.4 × 10-21 helek | 5.7 × 10-21 helek | 6.0 × 10-21 helek | 6.3 × 10-21 helek | 6.6 × 10-21 helek | 6.9 × 10-21 helek | 7.2 × 10-21 helek | 7.5 × 10-21 helek | 7.8 × 10-21 helek | 8.1 × 10-21 helek | 8.4 × 10-21 helek | 8.7 × 10-21 helek | 9.0 × 10-21 helek | 9.3 × 10-21 helek | 9.6 × 10-21 helek | 9.9 × 10-21 helek | 1.02 × 10-20 helek | 1.05 × 10-20 helek | 1.08 × 10-20 helek | 1.11 × 10-20 helek | 1.14 × 10-20 helek | 1.17 × 10-20 helek | 1.2 × 10-20 helek | 1.23 × 10-20 helek | 1.26 × 10-20 helek | 1.29 × 10-20 helek | 1.32 × 10-20 helek | 1.35 × 10-20 helek | 1.38 × 10-20 helek | 1.41 × 10-20 helek | 1.44 × 10-20 helek | 1.47 × 10-20 helek | 1.5 × 10-20 helek | 1.53 × 10-20 helek | 1.56 × 10-20 helek | 1.59 × 10-20 helek | 1.62 × 10-20 helek | 1.65 × 10-20 helek | 1.68 × 10-20 helek | 1.71 × 10-20 helek | 1.74 × 10-20 helek | 1.77 × 10-20 helek | 1.8 × 10-20 helek | 1.83 × 10-20 helek | 1.86 × 10-20 helek | 1.89 × 10-20 helek | 1.92 × 10-20 helek | 1.95 × 10-20 helek | 1.98 × 10-20 helek | 2.01 × 10-20 helek | 2.04 × 10-20 helek | 2.07 × 10-20 helek | 2.1 × 10-20 helek | 2.13 × 10-20 helek | 2.16 × 10-20 helek | 2.19 × 10-20 helek | 2.22 × 10-20 helek | 2.25 × 10-20 helek | 2.28 × 10-20 helek | 2.31 × 10-20 helek | 2.34 × 10-20 helek | 2.37 × 10-20 helek | 2.4 × 10-20 helek | 2.43 × 10-20 helek | 2.46 × 10-20 helek | 2.49 × 10-20 helek | 2.52 × 10-20 helek | 2.55 × 10-20 helek | 2.58 × 10-20 helek | 2.61 × 10-20 helek | 2.64 × 10-20 helek | 2.67 × 10-20 helek | 2.7 × 10-20 helek | 2.73 × 10-20 helek | 2.76 × 10-20 helek | 2.79 × 10-20 helek | 2.82 × 10-20 helek | 2.85 × 10-20 helek | 2.88 × 10-20 helek | 2.91 × 10-20 helek | 2.94 × 10-20 helek | 2.97 × 10-20 helek | 3.0 × 10-20 helek |
Zeptosecond is equal to 10 second (unit of time), comes from a combination of the metric prefix zepto (z) with the second (s). Plural name is zeptoseconds with symbol is zs.
| 1 zeptoseconds = 3.0E-22 heleks | 6 zeptoseconds = 1.8E-21 heleks |
| 2 zeptoseconds = 6.0E-22 heleks | 7 zeptoseconds = 2.1E-21 heleks |
| 3 zeptoseconds = 9.0E-22 heleks | 8 zeptoseconds = 2.4E-21 heleks |
| 4 zeptoseconds = 1.2E-21 heleks | 9 zeptoseconds = 2.7E-21 heleks |
| 5 zeptoseconds = 1.5E-21 heleks | 10 zeptoseconds = 3.0E-21 heleks |
A helek is 3⅓ seconds or 1/18 minute.
| 1 heleks = 3.3333333333333E+21 zeptoseconds | 6 heleks = 2.0E+22 zeptoseconds |
| 2 heleks = 6.6666666666667E+21 zeptoseconds | 7 heleks = 2.3333333333333E+22 zeptoseconds |
| 3 heleks = 1.0E+22 zeptoseconds | 8 heleks = 2.6666666666667E+22 zeptoseconds |
| 4 heleks = 1.3333333333333E+22 zeptoseconds | 9 heleks = 3.0E+22 zeptoseconds |
| 5 heleks = 1.6666666666667E+22 zeptoseconds | 10 heleks = 3.3333333333333E+22 zeptoseconds |
| 1 zeptoseconds = 3.0 × 10-22 heleks |
| 1 heleks = 3.3333333333333 × 1021 zeptoseconds |