|
|
The decibel (dB) is a logarithmic unit used to express the ratio between two values of a physical quantity, often power or intensity.
| dB | power ratio | amplitude ratio | ||
|---|---|---|---|---|
| 100 | 10 000 000 000 | 100 000 | ||
| 90 | 1 000 000 000 | 31 623 | ||
| 80 | 100 000 000 | 10 000 | ||
| 70 | 10 000 000 | 3 162 | ||
| 60 | 1 000 000 | 1 000 | ||
| 50 | 100 000 | 316 | .2 | |
| 40 | 10 000 | 100 | ||
| 30 | 1 000 | 31 | .62 | |
| 20 | 100 | 10 | ||
| 10 | 10 | 3 | .162 | |
| 6 | 3 | .981 | 1 | .995 (~2) |
| 3 | 1 | .995 (~2) | 1 | .413 |
| 1 | 1 | .259 | 1 | .122 |
| 0 | 1 | 1 | ||
| -1 | 0 | .794 | 0 | .891 |
| -3 | 0 | .501 (~1/2) | 0 | .708 |
| -6 | 0 | .251 | 0 | .501 (~1/2) |
| -10 | 0 | .1 | 0 | .316 2 |
| -20 | 0 | .01 | 0 | .1 |
| -30 | 0 | .001 | 0 | .031 62 |
| -40 | 0 | .000 1 | 0 | .01 |
| -50 | 0 | .000 01 | 0 | .003 162 |
| -60 | 0 | .000 001 | 0 | .001 |
| -70 | 0 | .000 000 1 | 0 | .000 316 2 |
| -80 | 0 | .000 000 01 | 0 | .000 1 |
| -90 | 0 | .000 000 001 | 0 | .000 031 62 |
| -100 | 0 | .000 000 000 1 | 0 | .000 01 |
Enter any one value and click on calculate button. Result will be displayed.