| petasecond | 1 Ps | 2 Ps | 3 Ps | 4 Ps | 5 Ps | 6 Ps | 7 Ps | 8 Ps | 9 Ps | 10 Ps | 11 Ps | 12 Ps | 13 Ps | 14 Ps | 15 Ps | 16 Ps | 17 Ps | 18 Ps | 19 Ps | 20 Ps | 21 Ps | 22 Ps | 23 Ps | 24 Ps | 25 Ps | 26 Ps | 27 Ps | 28 Ps | 29 Ps | 30 Ps | 31 Ps | 32 Ps | 33 Ps | 34 Ps | 35 Ps | 36 Ps | 37 Ps | 38 Ps | 39 Ps | 40 Ps | 41 Ps | 42 Ps | 43 Ps | 44 Ps | 45 Ps | 46 Ps | 47 Ps | 48 Ps | 49 Ps | 50 Ps | 51 Ps | 52 Ps | 53 Ps | 54 Ps | 55 Ps | 56 Ps | 57 Ps | 58 Ps | 59 Ps | 60 Ps | 61 Ps | 62 Ps | 63 Ps | 64 Ps | 65 Ps | 66 Ps | 67 Ps | 68 Ps | 69 Ps | 70 Ps | 71 Ps | 72 Ps | 73 Ps | 74 Ps | 75 Ps | 76 Ps | 77 Ps | 78 Ps | 79 Ps | 80 Ps | 81 Ps | 82 Ps | 83 Ps | 84 Ps | 85 Ps | 86 Ps | 87 Ps | 88 Ps | 89 Ps | 90 Ps | 91 Ps | 92 Ps | 93 Ps | 94 Ps | 95 Ps | 96 Ps | 97 Ps | 98 Ps | 99 Ps | 100 Ps |
| helek | 3.0 × 1014 helek | 6.0 × 1014 helek | 9.0 × 1014 helek | 1.2 × 1015 helek | 1.5 × 1015 helek | 1.8 × 1015 helek | 2.1 × 1015 helek | 2.4 × 1015 helek | 2.7 × 1015 helek | 3.0 × 1015 helek | 3.3 × 1015 helek | 3.6 × 1015 helek | 3.9 × 1015 helek | 4.2 × 1015 helek | 4.5 × 1015 helek | 4.8 × 1015 helek | 5.1 × 1015 helek | 5.4 × 1015 helek | 5.7 × 1015 helek | 6.0 × 1015 helek | 6.3 × 1015 helek | 6.6 × 1015 helek | 6.9 × 1015 helek | 7.2 × 1015 helek | 7.5 × 1015 helek | 7.8 × 1015 helek | 8.1 × 1015 helek | 8.4 × 1015 helek | 8.7 × 1015 helek | 9.0 × 1015 helek | 9.3 × 1015 helek | 9.6 × 1015 helek | 9.9 × 1015 helek | 1.02 × 1016 helek | 1.05 × 1016 helek | 1.08 × 1016 helek | 1.11 × 1016 helek | 1.14 × 1016 helek | 1.17 × 1016 helek | 1.2 × 1016 helek | 1.23 × 1016 helek | 1.26 × 1016 helek | 1.29 × 1016 helek | 1.32 × 1016 helek | 1.35 × 1016 helek | 1.38 × 1016 helek | 1.41 × 1016 helek | 1.44 × 1016 helek | 1.47 × 1016 helek | 1.5 × 1016 helek | 1.53 × 1016 helek | 1.56 × 1016 helek | 1.59 × 1016 helek | 1.62 × 1016 helek | 1.65 × 1016 helek | 1.68 × 1016 helek | 1.71 × 1016 helek | 1.74 × 1016 helek | 1.77 × 1016 helek | 1.8 × 1016 helek | 1.83 × 1016 helek | 1.86 × 1016 helek | 1.89 × 1016 helek | 1.92 × 1016 helek | 1.95 × 1016 helek | 1.98 × 1016 helek | 2.01 × 1016 helek | 2.04 × 1016 helek | 2.07 × 1016 helek | 2.1 × 1016 helek | 2.13 × 1016 helek | 2.16 × 1016 helek | 2.19 × 1016 helek | 2.22 × 1016 helek | 2.25 × 1016 helek | 2.28 × 1016 helek | 2.31 × 1016 helek | 2.34 × 1016 helek | 2.37 × 1016 helek | 2.4 × 1016 helek | 2.43 × 1016 helek | 2.46 × 1016 helek | 2.49 × 1016 helek | 2.52 × 1016 helek | 2.55 × 1016 helek | 2.58 × 1016 helek | 2.61 × 1016 helek | 2.64 × 1016 helek | 2.67 × 1016 helek | 2.7 × 1016 helek | 2.73 × 1016 helek | 2.76 × 1016 helek | 2.79 × 1016 helek | 2.82 × 1016 helek | 2.85 × 1016 helek | 2.88 × 1016 helek | 2.91 × 1016 helek | 2.94 × 1016 helek | 2.97 × 1016 helek | 3.0 × 1016 helek |
Petasecond is equal to 1 000 000 000 000 000 second (unit of time), comes from a combination of the metric prefix peta (P) with the second (s). Plural name is petaconds with symbol is Ps.
| 1 petaseconds = 3.0E+14 heleks | 6 petaseconds = 1.8E+15 heleks |
| 2 petaseconds = 6.0E+14 heleks | 7 petaseconds = 2.1E+15 heleks |
| 3 petaseconds = 9.0E+14 heleks | 8 petaseconds = 2.4E+15 heleks |
| 4 petaseconds = 1.2E+15 heleks | 9 petaseconds = 2.7E+15 heleks |
| 5 petaseconds = 1.5E+15 heleks | 10 petaseconds = 3.0E+15 heleks |
A helek is 3⅓ seconds or 1/18 minute.
| 1 heleks = 3.3333333333333E-15 petaseconds | 6 heleks = 2.0E-14 petaseconds |
| 2 heleks = 6.6666666666667E-15 petaseconds | 7 heleks = 2.3333333333333E-14 petaseconds |
| 3 heleks = 1.0E-14 petaseconds | 8 heleks = 2.6666666666667E-14 petaseconds |
| 4 heleks = 1.3333333333333E-14 petaseconds | 9 heleks = 3.0E-14 petaseconds |
| 5 heleks = 1.6666666666667E-14 petaseconds | 10 heleks = 3.3333333333333E-14 petaseconds |
| 1 petaseconds = 3.0 × 1014 heleks |
| 1 heleks = 3.3333333333333 × 10-15 petaseconds |