Free Music Tools

Tap a key or the button along with any song to see its BPM live, averaged over 4, 8 or 16 taps, with half and double time buttons.

A steady click from 30 to 300 BPM in any time signature, with an accented first beat, subdivisions and tap to set the tempo.

Change the key of a song by up to 12 semitones and its speed from 50% to 200%, each on its own, with a live preview.

Measure a song's integrated, short term and momentary loudness in LUFS, plus loudness range and true peak, and compare it with common streaming targets.

Drop in a song for a quick estimate of its key and BPM from a 90 second section you choose: the two likeliest keys and the tempo with half and double time.

Pick a root and a scale to see its notes, the chords in the key with roman numerals, the relative keys and the Camelot code.

See how big an MP3, AAC, WAV, AIFF or FLAC file will be for any length, or work out a file's bitrate from its size.

Enter your streams on Spotify, Apple Music, YouTube and more for an estimated payout range, or see how many streams it takes to reach a money goal.

Turn a BPM into delay times in milliseconds for every note value, straight, dotted and triplet, plus Hz, bar lengths and samples per beat.

Paste lyrics to count the syllables in every line, with stress marks and a bar per line to match verses. English, Spanish, Portuguese and Italian.

An interactive Camelot wheel: click a key to see its code and the keys that mix well with it, with energy boost moves labeled.

Type an English word for instant perfect, near and multisyllable rhymes, grouped by syllable count. Only the AI rap rhymes use credits.