Local processing · no file upload needed
Compressed formats use bitrate x duration / 8. WAV and AIFF use sample rate x bit depth x channels. FLAC and ALAC estimate from the uncompressed PCM size.
Cinch Audio Recorder is the desktop app for recording streaming audio, splitting tracks, and saving files with song info, artwork, lyrics, and export options.
About 58 MB per hour, often enough for casual listening or long spoken recordings.
About 144 MB per hour, a common high-quality compressed music target.
About 635 MB per hour, useful for lossless planning but much larger than MP3 or M4A.
Start with the duration you expect to record or export. Use hours, minutes, and seconds instead of uploading a file, because this calculator estimates size from the planned length and audio settings.
Select MP3, AAC, Opus, FLAC, WAV, AIFF, or a custom bitrate/PCM setting that matches the recording you plan to create.
Check the size result and the common estimates table. If the file looks too large, test a lower bitrate, mono voice setting, or compressed format before recording.
Reserve enough storage for the planned session, backup folder, upload limit, or device transfer, then record or export with the setting that fits your space.
A practical problem is knowing whether a two or three hour internet radio recording will fill a laptop drive, USB stick, or cloud folder before the show ends. This audio file size calculator helps users compare MP3 bitrate, WAV storage, AAC exports, podcast archives, radio captures, and long-form music recordings before they start saving files offline.
What you get: Before the show starts, the user can see whether the planned MP3, AAC, or WAV capture fits on the target drive and choose a safer bitrate if the estimate is too large.
Podcasters and community moderators need an export setting that stays small enough to upload while remaining clear for listeners. Use the calculator to compare 64 kbps voice notes, 128 kbps MP3 podcast files, 160 kbps AAC exports, stereo music clips, and archive copies before publishing an episode or sending audio to a client.
What you get: The episode can leave the editor with a clear size target, such as a smaller voice-first MP3 for upload or a higher-bitrate copy for client review.
A batch of class recordings can consume more Google Drive, Dropbox, OneDrive, or external-drive storage than expected. This helps plan lecture archives, training libraries, conference recordings, and online course audio without guessing file sizes one by one.
What you get: You get a clear size or storage estimate before recording, exporting, backing up, or copying the audio file.
Sleep audio, late-night radio, long livestreams, and unattended webinars need enough disk space to finish safely. Estimate overnight recording size, long MP3 capture storage, WAV file growth, and backup space before leaving Cinch or another recorder running.
What you get: The user can start an overnight stream, long lecture, or unattended recording with enough free space reserved for the full session and follow-up exports.
Checked against mature online audio tools for the same job: the goal is not only to complete the task, but to make the next decision obvious.
The strongest calculators do more than output one number: they compare presets, explain tradeoffs, and produce settings a user can copy into an editor or recorder.
Single-purpose calculators often leave the user with a number but no next action.
This page now pairs the calculation with practical result previews, copy-ready workflow notes, and routes to the next Cinch tool instead of stopping at math.
Use it before recording, exporting, mixing, or editing when you need a practical estimate or setting to copy into another workflow.
No. This calculator works from values you type into the page, such as duration, bitrate, storage size, offset, level, timing, or format settings.
They are planning estimates. Real files can vary because of encoder overhead, variable bitrate, metadata, artwork, lossless compression, or the way another editor applies settings.
Use the number as a starting point for storage planning, recording settings, time-stretch correction, or mix automation, then check the final audio in the tool or editor you actually use.
