Audio File Size Calculator

Estimate audio file sizes for WAV, FLAC, MP3, AAC, and OGG formats based on duration, sample rate, bit depth, and channel count.

Inputs

Duration

minutes

Sample Rate

Bit Depth

Channels

Tab to move between fields

Results

WAV/AIFF (Uncompressed)

35.33 MB

≈ 7 songs

Uncompressed Bitrate1,411 kbps

FLAC (Lossless)21.2 MB

MP3 320 kbps8.01 MB

MP3 128 kbps3.2 MB

AAC 256 kbps6.41 MB

OGG Vorbis 160 kbps4.01 MB

How to Use This Calculator

Enter Duration, Sample Rate, and 22,050 Hz (Low).
Set 44,100 Hz (CD Quality), 48,000 Hz (Video/Broadcast), and 88,200 Hz (Hi-Res).
Adjust 96,000 Hz (Hi-Res), 192,000 Hz (Studio) as needed.
Review the WAV/AIFF (Uncompressed) (MB) result.
Use Uncompressed Bitrate (kbps) and FLAC (Lossless) (MB) to inform your decision.

How the result changes with Duration

Duration	WAV/AIFF (Uncompressed)
60	605.62 MB
210	2,119.67 MB
390	3,936.54 MB
540	5,450.59 MB

What each input means

Duration: Length of the audio in minutes.
Sample Rate: Number of audio samples per second. CD quality is 44,100 Hz; professional recording often uses 48,000 or 96,000 Hz.
Bit Depth: Bits per sample. Higher bit depth means greater dynamic range. 16-bit is CD standard; 24-bit is professional.
Channels: Number of audio channels. Mono for single-source recordings; stereo for standard music.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Duration = 3.5, Sample Rate = 44100, Bit Depth = 16, Channels = 2 = 4 input(s) provided
Calculate WAV/AIFF
WAV/AIFF
35.33 = 35.33
Calculate Uncompressed Bitrate
Uncompressed Bitrate
1411 = 1411
Calculate FLAC
FLAC
21.2 = 21.2

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