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Music Production

Audio Size per Minute Calculator

Calculate MB per minute for a given bitrate.

Quick Data Rate

Use for estimating file sizes quickly.

What this calculator does

Audio size per minute is a key metric that expresses how much storage or bandwidth an audio file consumes per 60 seconds, enabling quick mental math for estimating project scope and resource requirements. Calculating storage per minute simplifies planning—instead of complex formulas, you instantly know that your 48 kHz, 24-bit stereo recording consumes 28.8 MB per minute, making it trivial to estimate a 2-hour session's storage. This metric is invaluable for budgeting SSD space, estimating upload/download times, and planning streaming bandwidth. Music producers, audio engineers, and content creators rely on per-minute metrics to quickly assess project feasibility before committing resources.

How it works

Audio per minute is calculated by multiplying the total file size formula by 60 seconds. For example, at 48 kHz, 24-bit, stereo: (48,000 × 24 × 2) ÷ 8 × 60 = 17,280,000 bytes = 16.4 MB per minute. Knowing this value, you can multiply by project duration: a 30-minute session = 30 × 16.4 MB = 492 MB. For compressed formats, use the bitrate directly: 192 kbps = 192 kilobits ÷ 8 = 24 kilobytes per second × 60 = 1.44 MB per minute.

Formula

Audio per minute (bytes) = (Sample Rate × Bit Depth × Channels) ÷ 8 × 60. For 48 kHz, 24-bit, stereo: (48,000 × 24 × 2) ÷ 8 × 60 = 17,280,000 bytes = 16.4 MB/min. For bitrate-based (MP3, AAC): (Bitrate in kbps) ÷ 8 × 60 = bytes per minute.

Tips for using this calculator

  • Memorize your standard per-minute sizes: 48/24 stereo ≈ 16.4 MB/min, 44.1/16 stereo ≈ 10.6 MB/min, 96/24 stereo ≈ 32.8 MB/min
  • For quick estimates: Multiply minutes by per-minute size—no calculators needed when you know your project parameters
  • Multi-track sessions multiply dramatically: 16-track recording at 48/24 ≈ 262 MB/min—budget accordingly before starting sessions
  • Cloud storage and upload scenarios benefit from per-minute metrics; knowing your bandwidth helps estimate upload duration precisely
  • Streaming bitrates: 128 kbps = 0.96 MB/min, 192 kbps = 1.44 MB/min, 320 kbps = 2.4 MB/min—multiply by song count for playlist estimates

Frequently asked questions

How do I quickly calculate total storage for a multi-track session?

Use the per-minute metric. For a 16-track session at 48/24 stereo, multiply the single-track per-minute size (16.4 MB) by 16 tracks to get 262.4 MB per minute. Then multiply by session duration. A 2-hour session = 120 minutes × 262.4 MB = 31.5 GB.

What's the per-minute size for streaming audio?

Streaming bitrates vary: 128 kbps (low quality) = 0.96 MB/min, 192 kbps (good quality) = 1.44 MB/min, 256-320 kbps (high quality) = 1.92-2.4 MB/min. A 3-minute song at 192 kbps uses about 4.3 MB—calculate based on your target bitrate and platform requirements.

How does sample rate affect per-minute storage?

Doubling sample rate doubles per-minute storage. 44.1 kHz, 24-bit, stereo = 10.6 MB/min. 48 kHz, 24-bit, stereo = 11.5 MB/min. 96 kHz, 24-bit, stereo = 23 MB/min. Higher sample rates provide more flexibility during editing but demand proportionally more storage.

Is per-minute size useful for lossy formats?

Yes, but with caveats. MP3 and AAC file sizes vary with content complexity (variable bitrate). However, if you know your target bitrate, the per-minute calculation is accurate. Use average bitrate for streaming estimates—individual files may vary slightly.