Percent to dB Calculator

This tool converts from Percentage (%) to deciBel (dB)

dB to Percent

Formula

AdB = 10*Log10(A%/100)

Example Calculation

1% represents a linear value of 0.01 and equates to -20 dB.

0% results in logarithm of zero. The dB equivalent is a very small number represented as -Inf.

Percent to dB Chart

PercentdB
0-∞
1-20.00
2-16.99
3-15.23
4-13.98
5-13.01
6-12.22
7-11.55
8-10.97
9-10.46
10-10.00
11-9.59
12-9.21
13-8.86
14-8.54
15-8.24
16-7.96
17-7.70
18-7.45
19-7.21
20-6.99
21-6.78
22-6.58
23-6.38
24-6.20
25-6.02
26-5.85
27-5.69
28-5.53
29-5.38
30-5.23
31-5.09
32-4.95
33-4.81
34-4.69
35-4.56
36-4.44
37-4.32
38-4.20
39-4.09
40-3.98
41-3.87
42-3.77
43-3.67
44-3.57
45-3.47
46-3.37
47-3.28
48-3.19
49-3.10
50-3.01
51-2.92
52-2.84
53-2.76
54-2.68
55-2.60
56-2.52
57-2.44
58-2.37
59-2.29
60-2.22
61-2.15
62-2.08
63-2.01
64-1.94
65-1.87
66-1.80
67-1.74
68-1.67
69-1.61
70-1.55
71-1.49
72-1.43
73-1.37
74-1.31
75-1.25
76-1.19
77-1.14
78-1.08
79-1.02
80-0.97
81-0.92
82-0.86
83-0.81
84-0.76
85-0.71
86-0.66
87-0.60
88-0.56
89-0.51
90-0.46
91-0.41
92-0.36
93-0.32
94-0.27
95-0.22
96-0.18
97-0.13
98-0.09
99-0.04
1000.00

Percent to dB Excel Calculator

📥 Excel File for Percent to dB conversion