About the Audio Calculators
Audio file size is bitrate multiplied by duration. A 320 kbps MP3 uses 2.4 MB per minute; uncompressed CD audio uses 10.6 MB per minute. Lossless FLAC falls in between, usually 55–70% of the uncompressed size.
The streaming calculator shows how much mobile data each quality tier uses per hour and per month, so you can decide whether lossless or hi-res streaming fits your data plan.
Streaming data use per hour
| Quality | Bitrate | Per hour |
|---|---|---|
| Normal (160 kbps) | 160 kbps | ≈ 72 MB |
| High (320 kbps) | 320 kbps | ≈ 144 MB |
| Lossless 16-bit / 44.1 kHz FLAC | ≈ 900 kbps | ≈ 400 MB |
| Hi-Res 24-bit / 96 kHz FLAC | ≈ 2,900 kbps | ≈ 1.3 GB |
| Hi-Res 24-bit / 192 kHz FLAC | ≈ 5,700 kbps | ≈ 2.6 GB |
Frequently asked questions
How much data does lossless streaming use?
CD-quality lossless (16-bit/44.1 kHz FLAC) uses roughly 300–500 MB per hour. Hi-res 24-bit/96 kHz uses about 1–1.5 GB per hour.
How do I calculate audio file size?
Multiply the bitrate in kilobits per second by the length in seconds, then divide by 8 to get kilobytes. For example, 320 kbps × 240 s ÷ 8 = 9,600 KB, about 9.6 MB.
What is the bitrate of CD audio?
1,411.2 kbps: 44,100 samples per second × 16 bits × 2 channels.