second | 1 s | 2 s | 3 s | 4 s | 5 s | 6 s | 7 s | 8 s | 9 s | 10 s | 11 s | 12 s | 13 s | 14 s | 15 s | 16 s | 17 s | 18 s | 19 s | 20 s | 21 s | 22 s | 23 s | 24 s | 25 s | 26 s | 27 s | 28 s | 29 s | 30 s | 31 s | 32 s | 33 s | 34 s | 35 s | 36 s | 37 s | 38 s | 39 s | 40 s | 41 s | 42 s | 43 s | 44 s | 45 s | 46 s | 47 s | 48 s | 49 s | 50 s | 51 s | 52 s | 53 s | 54 s | 55 s | 56 s | 57 s | 58 s | 59 s | 60 s | 61 s | 62 s | 63 s | 64 s | 65 s | 66 s | 67 s | 68 s | 69 s | 70 s | 71 s | 72 s | 73 s | 74 s | 75 s | 76 s | 77 s | 78 s | 79 s | 80 s | 81 s | 82 s | 83 s | 84 s | 85 s | 86 s | 87 s | 88 s | 89 s | 90 s | 91 s | 92 s | 93 s | 94 s | 95 s | 96 s | 97 s | 98 s | 99 s | 100 s |
nanosecond | 1 000 000 000 ns | 2 000 000 000 ns | 3 000 000 000 ns | 4 000 000 000 ns | 5 000 000 000 ns | 6 000 000 000 ns | 7 000 000 000 ns | 8 000 000 000 ns | 9 000 000 000 ns | 10 000 000 000 ns | 11 000 000 000 ns | 12 000 000 000 ns | 13 000 000 000 ns | 14 000 000 000 ns | 15 000 000 000 ns | 16 000 000 000 ns | 17 000 000 000 ns | 18 000 000 000 ns | 19 000 000 000 ns | 20 000 000 000 ns | 21 000 000 000 ns | 22 000 000 000 ns | 23 000 000 000 ns | 24 000 000 000 ns | 25 000 000 000 ns | 26 000 000 000 ns | 27 000 000 000 ns | 28 000 000 000 ns | 29 000 000 000 ns | 30 000 000 000 ns | 31 000 000 000 ns | 32 000 000 000 ns | 33 000 000 000 ns | 34 000 000 000 ns | 35 000 000 000 ns | 36 000 000 000 ns | 37 000 000 000 ns | 38 000 000 000 ns | 39 000 000 000 ns | 40 000 000 000 ns | 41 000 000 000 ns | 42 000 000 000 ns | 43 000 000 000 ns | 44 000 000 000 ns | 45 000 000 000 ns | 46 000 000 000 ns | 47 000 000 000 ns | 48 000 000 000 ns | 49 000 000 000 ns | 50 000 000 000 ns | 51 000 000 000 ns | 52 000 000 000 ns | 53 000 000 000 ns | 54 000 000 000 ns | 55 000 000 000 ns | 56 000 000 000 ns | 57 000 000 000 ns | 58 000 000 000 ns | 59 000 000 000 ns | 60 000 000 000 ns | 61 000 000 000 ns | 62 000 000 000 ns | 63 000 000 000 ns | 64 000 000 000 ns | 65 000 000 000 ns | 66 000 000 000 ns | 67 000 000 000 ns | 68 000 000 000 ns | 69 000 000 000 ns | 70 000 000 000 ns | 71 000 000 000 ns | 72 000 000 000 ns | 73 000 000 000 ns | 74 000 000 000 ns | 75 000 000 000 ns | 76 000 000 000 ns | 77 000 000 000 ns | 78 000 000 000 ns | 79 000 000 000 ns | 80 000 000 000 ns | 81 000 000 000 ns | 82 000 000 000 ns | 83 000 000 000 ns | 84 000 000 000 ns | 85 000 000 000 ns | 86 000 000 000 ns | 87 000 000 000 ns | 88 000 000 000 ns | 89 000 000 000 ns | 90 000 000 000 ns | 91 000 000 000 ns | 92 000 000 000 ns | 93 000 000 000 ns | 94 000 000 000 ns | 95 000 000 000 ns | 96 000 000 000 ns | 97 000 000 000 ns | 98 000 000 000 ns | 99 000 000 000 ns | 100 000 000 000 ns |
The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units / Système International d'Unités (SI).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
second | s | time of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom at 0 K(but other seconds are sometimes used in astronomy). Also that time it takes for light to travel a distance of 299792458 metres. | ≡ 1 second | Metric system SI |
seconds | nanoseconds | seconds | nanoseconds |
---|---|---|---|
1 | ≡ 1000000000 | 6 | ≡ 6000000000 |
2 | ≡ 2000000000 | 7 | ≡ 7000000000 |
3 | ≡ 3000000000 | 8 | ≡ 8000000000 |
4 | ≡ 4000000000 | 9 | ≡ 9000000000 |
5 | ≡ 5000000000 | 10 | ≡ 10000000000 |
Nanosecond is equal to 10-9 second (unit of time), comes from a combination of the metric prefix nano (n) with the second (s). Plural name is nanoseconds with symbol is ns.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
nanosecond | ns | ≡ 10-9 second | ≡ 10-9 second | Metric system SI |
nanoseconds | seconds | nanoseconds | seconds |
---|---|---|---|
1 | ≡ 1.0E-9 | 6 | ≡ 6.0E-9 |
2 | ≡ 2.0E-9 | 7 | ≡ 7.0E-9 |
3 | ≡ 3.0E-9 | 8 | ≡ 8.0E-9 |
4 | ≡ 4.0E-9 | 9 | ≡ 9.0E-9 |
5 | ≡ 5.0E-9 | 10 | ≡ 1.0E-8 |
seconds | nanoseconds |
---|---|
1 | ≡ 1 000 000 000 |
1.0 × 10-9 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |