Audio Bitrate File Size Calculator
Audio Bitrate File Size
Calculate audio file sizes based on bitrate, sample rate, duration, and format.
Formula
File Size (MB) = (Bitrate kbps x Duration sec) / 8 / 1024
Frequently Asked Questions
How big is a 3-minute MP3 file?
At 320 kbps, a 3-minute MP3 is approximately 7.2 MB. At 128 kbps it is about 2.9 MB.
What is the difference between lossy and lossless audio?
Lossy formats like MP3 discard some audio data to reduce size, while lossless formats like FLAC preserve all original audio data.
What bitrate should I use for music?
For high quality listening, 320 kbps MP3 or 256 kbps AAC are excellent. Audiophiles prefer FLAC or WAV for lossless quality.
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