10 MB is the maximum file size. Please refer to the table below to calculate audio lengths based off bit rate.
MP3 File Size Calculations
Formula: Kbps = bits per second / 8 = Bytes per second x 60 seconds = Bytes per minute x 60 minutes = Bytes per hour
Bitrate |
File size |
File size |
File size |
8 Kbps |
1 KB |
60 KB |
3.6 MB |
16 Kbps |
2 KB |
120 KB |
7.2 MB |
32 Kbps |
4 KB |
240 KB |
14.4 MB |
40 Kbps |
5 KB |
300 KB |
18.0 MB |
48 Kbps |
6 KB |
360 KB |
21.6 MB |
56 Kbps |
7 KB |
420 KB |
25.2 MB |
64 Kbps |
8 KB |
480 KB |
28.8 MB |
80 Kbps |
10 KB |
600 KB |
36.0 MB |
96 Kbps |
12 KB |
720 KB |
43.2 MB |
112 Kbps |
14 KB |
840 KB |
50.4 MB |
128 Kbps |
16 KB |
960 KB |
57.6 MB |
160 Kbps |
20 KB |
1.20 MB |
72.0 MB |
192 Kbps |
24 KB |
1.44 MB |
86.4 MB |
224 Kbps |
28 KB |
1.68 MB |
100.8 MB |
256 Kbps |
32 KB |
1.92 MB |
115.2 MB |
320 Kbps |
40 KB |
2.40 MB |
144.0 MB |