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Uncompressed PCM audio size calculator

Estimate raw uncompressed PCM payload size from sample rate, bit depth, channels and duration.

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Your result

PCM data bitrate2,304kbit/s
Raw sample data size17.28MB
Raw sample data binary size16.48MiB

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How to calculate

Uncompressed PCM audio sizeTwo channels store two sample values at each sample instant. Increasing sample rate, bit depth or channels increases the payload linearly. Concept diagram; not to scale.Uncompressed PCM audio size1Sample rate (Hz)480002Bits per sample243PCM data bitrate2304 kbit/sMyCalCute.com
Two channels store two sample values at each sample instant. Increasing sample rate, bit depth or channels increases the payload linearly. Concept diagram; not to scale.

Estimate raw uncompressed PCM payload size from sample rate, bit depth, channels and duration.

PCM data bitrate = rate*bits*ch/1000 kbit/s
Raw sample data size = rate*bits*ch*t/8/1e6 MB
Raw sample data binary size = rate*bits*ch*t/8/1048576 MiB

Worked example

  • Sample rate (Hz): 48000
  • Bits per sample: 24
  • Channel count: 2
  • Duration (s): 60
  • PCM data bitrate: 2,304 kbit/s
  • Raw sample data size: 17.28 MB
  • Raw sample data binary size: 16.48 MiB

Assumptions and limits

Excludes file headers, padding, metadata, compression and codec framing. Packed sample bits are assumed; actual storage formats may use larger containers per sample.

Results are rounded for display; calculations use unrounded values. Read our calculation methodology.

Understanding the result

Estimate raw uncompressed PCM payload size from sample rate, bit depth, channels and duration. Two channels store two sample values at each sample instant. Increasing sample rate, bit depth or channels increases the payload linearly.

When this tool is useful

Two channels store two sample values at each sample instant. Increasing sample rate, bit depth or channels increases the payload linearly.

Understanding your inputs

InputExample
Sample rate (Hz) rate48000
Bits per sample bits24
Channel count ch2
Duration (s) t60

Frequently asked questions

What does this model leave out?

Excludes file headers, padding, metadata, compression and codec framing. Packed sample bits are assumed; actual storage formats may use larger containers per sample.

How do I reproduce the example?

Enter the displayed example values in their labelled units. Apply the formula before rounding; change one input at a time to compare scenarios.

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