Audio File SizeMegabytes to Seconds At 48khz 32bit Stereo

MB to seconds for 48kHz / 32-bit stereo PCM Audio

Methodology·How We Verify

Snapshot

At 48kHz / 32-bit stereo PCM, 100 MB stores about 260.4 seconds of audio.

Reference basis: This result uses the fixed 48khz / 32-bit stereo pcm audio PCM profile to turn storage budget back into recording time from 384,000 bytes/s.
Example: For 10 MB, the 48kHz / 32-bit stereo PCM Audio PCM estimate gives about 26 seconds of recording time.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

260.4 seconds

Switch

API and AI agent access

MB to seconds for 48kHz / 32-bit stereo PCM Audio. profile: 48khz-32bit-stereo.

Machine-readable identifiers

Conversion family: audio-file-size
Source unit: megabyte
Target unit: second
Audio profile: 48khz-32bit-stereo

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "audio-file-size",
  "value": 100,
  "from": "megabyte",
  "to": "second",
  "parameters": {
    "profile": "48khz-32bit-stereo"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "audio-file-size",
    "value": 100,
    "from": "megabyte",
    "to": "second",
    "result": {
      "raw": 260.4166666666667,
      "display": "260.4"
    },
    "canonicalPath": "/audio-file-size/megabytes-to-seconds-at-48khz-32bit-stereo/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

48kHz / 32-bit stereo streams 384000 bytes/second (0.384 MB/s). seconds = MB / 0.384. With input 1 MB, result is 2.60416666667 s.

Method & PCM Profile

Method basis: fixed PCM byte-rate estimate inverted to recover recording time from storage size at 0.384 MB/s.
Profile reference: 48kHz / 32-bit stereo PCM Audio (384,000 bytes/s; 0.384 MB/s PCM basis).
Consistency rule: snapshot, calculator, FAQ, and common-value rows all use the same fixed PCM profile and byte-rate estimate for this route.

Common Conversion Values

File size (MB)	Duration (seconds)
10	26
25	65.1
50	130.2
100	260.4
250	651
500	1,302.1

Questions & answers

Frequently Asked Questions

Which PCM settings are fixed for mb to seconds?

MB to seconds uses 48000 Hz, 32-bit depth, and 2 channels for this profile.

How is the 23.04 MB per minute factor calculated for 48kHz / 32-bit stereo?

Bytes per second = 48000 × (32 / 8) × 2 = 384000 bytes/s. Using decimal MB (1 MB = 1,000,000 bytes), that is 0.384 MB/s or 23.04 MB/min.

How do I reverse MB to s for 48kHz / 32-bit stereo?

Use the opposite route for 48kHz / 32-bit stereo to convert duration (seconds) back to file size (mb) with the same PCM assumptions.