This tool calculates estimated audio file sizes from duration plus sample rate, bit depth, channels, and optional bitrate for compressed formats. It provides results in multiple units and supports common formats like WAV, FLAC, MP3, and AAC. The page states the calculator is free to use with no signup required. ([safeaudiokit.com](https://safeaudiokit.com/calc/audio-file-size-calculator))

6 options🎵 Music & Audio

BPM Calculator

The BPM-to-milliseconds tool converts tempo into beat duration and shows a full note-duration table (whole, half, quarter, eighth, sixteenth, plus dotted and triplet values). It also supports tap tempo and note-division selection, so users can quickly derive exact rhythmic durations at any BPM.

6 options🎵 Music & Audio

Chord Calculator

The chord calculator determines what notes make up a given chord.

1 option

🎵 Music & Audio

Music Interval Calculator

Available Options

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