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Audio Calc: Bitrate & File Size Calculator
x402
Audio Calc: Bitrate & File Size Calculator is a paid API for AI agents from audio-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates audio file size from bitrate and duration, solves for missing bitrate or duration given file size, and computes PCM file size from sample rate, bit depth, and channels.
Price / call$0.02
Success—
StatusUnknown
How this service works
Audio file size from bitrate and duration, or the bitrate or duration it implies; PCM size from rate, depth and channels.
Output
Returns file size in multiple units (bytes, KB, MB, GB, KiB, MiB, GiB), duration in seconds and minutes, bitrate in kbps, bytes per second, megabytes per hour, a human-readable summary, and a PCM flag indicating whether the calculation used PCM mode. For unsolvable inputs, returns null fields with reasons explaining what's missing.
Example use cases
Podcast episode storage estimate
“I'm recording a 45-minute podcast episode and planning to export it at 96 kbps — how many MB will the file be, and how much storage would I need for a full season of 12 episodes?”
Reverse-engineer bitrate from file size
“I downloaded an audio file that's 52 MB and it's 58 minutes long — what bitrate was it encoded at?”
PCM raw audio size for DAW project
“I'm recording a DAW session at 48000 Hz, 24-bit, stereo for 90 seconds — what will the raw PCM file size be in MB?”
Technical details
Endpoint
GEThttps://audio-calc.x402tookit.com/bitrate-size?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to compute audio file sizes, derive bitrate or duration from file size, or calculate raw PCM storage requirements — especially in agentic workflows involving podcast planning, audio streaming budget estimation, DAW session sizing, or storage capacity calculations. It handles both compressed (bitrate-based) and uncompressed (PCM) audio math in a single call.
Side effects
- Insufficient query parameters provided to solve for any single unknown — returns null results with reasons array explaining what's missing
- Conflicting or zero-value inputs (e.g. zero duration) may yield null or degenerate results
- Missing required combination for PCM mode (sampleRate, bitDepth, and channels all needed together)
- Non-numeric or out-of-range values may cause schema validation errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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