Sound pressure levels
This table shows sound pressure levels in decibels and what this means in terms of intensity and power ratios.
Decibels |
Intensity (or Power) Ratio |
Pressure (or Current or Voltage) Ratio |
Pressure Ratio as a Power of 10 |
Sound Pressure (mPa) |
Nepers |
|---|---|---|---|---|---|
0 |
1 |
1 |
0 |
0.02 |
0 |
10 |
10 |
3.16 |
0.5 |
0.06 |
1.15 |
20 |
100 |
10 |
1 |
0.2 |
2.3 |
30 |
1000 |
31.62 |
1.5 |
0.63 |
3.45 |
40 |
10000 |
100 |
2 |
2 |
4.61 |
50 |
100000 |
316.23 |
2.5 |
6.32 |
5.76 |
60 |
1000000 |
1000 |
3 |
20 |
6.91 |
70 |
10000000 |
3162.28 |
3.5 |
63.25 |
8.06 |
80 |
100000000 |
10000 |
4 |
200 |
9.21 |
90 |
1000000000 |
31622.78 |
4.5 |
632.46 |
10.36 |
100 |
10000000000 |
100000 |
5 |
2000 |
11.51 |
110 |
100000000000 |
316227.77 |
5.5 |
6324.56 |
12.66 |
120 |
1000000000000 |
1000000 |
6 |
20000 |
13.82 |
-96 |
0 |
0 |
-4.8 |
0 |
-11.05 |