Audio File Size Calculator
Calculate audio file size from bitrate and duration.
Understanding Audio File Sizes
Audio file size is determined by the bitrate, duration, and format of the audio. Understanding these relationships helps with storage planning, bandwidth estimation, and choosing the right quality settings for your needs.
Quick Reference Table
| Quality | Bitrate | 3 Minutes | 1 Hour |
|---|---|---|---|
| Low (Voice) | 64 kbps | 1.4 MB | 28 MB |
| Podcast Quality | 96 kbps | 2.1 MB | 42 MB |
| Standard Music | 128 kbps | 2.8 MB | 56 MB |
| High Quality | 192 kbps | 4.2 MB | 84 MB |
| Premium | 256 kbps | 5.6 MB | 112 MB |
| Studio Quality | 320 kbps | 7.0 MB | 140 MB |
Common Audio Formats
Lossy Formats
MP3: Most universal format, 128-320 kbps
AAC: Better quality than MP3, 96-256 kbps
OGG: Open-source, good compression
Lossless Formats
FLAC: Free lossless, ~5-10 MB/min
ALAC: Apple lossless, similar to FLAC
WAV: Uncompressed, ~10 MB/min
Pro Tip: For most music listening, 192 kbps AAC or 256 kbps MP3 provides excellent quality that's virtually indistinguishable from lossless for most listeners.
Quick Reference
File Size per Minute:
- 64 kbps: ~0.5 MB
- 128 kbps: ~1 MB
- 192 kbps: ~1.4 MB
- 256 kbps: ~1.9 MB
- 320 kbps: ~2.3 MB