Tap along to any song with a button, the spacebar or any key and see its BPM live. Free, with no sign in.
A free online metronome with accurate timing: 30 to 300 BPM, time signatures, an accented first beat, subdivisions and tap to set.
Change the key of a song or slow it down in your browser. Pitch and tempo change separately, with a live preview and WAV download.
Check the LUFS of a song in your browser: integrated loudness, short term max, true peak and loudness range, compared with common streaming levels.
A free quick estimate of a song's key and BPM from a 90 second section, in your browser: the two likeliest keys and the tempo with half and double time options.
Pick a key and see the notes in the scale, the chords in the key with roman numerals, the relative key and the Camelot code. Free.
Work out how big an MP3, AAC, WAV, AIFF or FLAC file will be, or the bitrate of a file from its size and length. Free, in your browser.
Estimate what your streams pay on Spotify, Apple Music, YouTube, Amazon Music, TIDAL and Deezer, or how many streams it takes to reach a money goal. Free, in your browser.
Turn any BPM into delay and reverb times in milliseconds, from whole notes to 1/64, with dotted and triplet values, Hz, bar lengths and samples per beat.
Paste lyrics and count the syllables in every line, with a bar per line and stress marks, to match the flow of your verses. English, Spanish, Portuguese and Italian.
An interactive Camelot wheel for harmonic mixing: click a key to see its Camelot code and the keys that mix well with it, plus energy boost moves.
Checks your lyrics for copyright risk by flagging lines that closely match well known songs, with a uniqueness score and a short risk summary.
Paste lyrics or upload a song, and get the words in another language: a faithful line by line translation plus a singable version for covers.
Type a word, get words that rhyme with it: perfect, near and multisyllable rhymes, free and instant. Plus AI rap rhymes for a word or a whole line.
AI MIDI generation now lives at MIDI Lab, from the team behind SongTools: type a prompt, get editable multitrack MIDI, download it or play it on your synths.
Generates concise, Suno-ready song lyrics with structure tags (Verse, Chorus, Bridge).
Expands a simple text idea into a detailed prompt with descriptions of genre, instrumentation, and mood.
Analyzes an uploaded audio file and generates a descriptive text prompt describing its musical characteristics.
Finds the musical key, Camelot key, BPM and time signature of any audio file.
Upload a song and AI turns a section of it into sheet music: the main melody and chords, as a score you can view, save as a PDF or download as MusicXML.
Upload a song, get its lyrics as text. Works on sung or spoken vocals in any common audio file.
Upload a song and get an honest written review from AI: what works, what to fix, and timed notes you can click to hear each moment.
Checks a master for streaming readiness (LUFS, stereo width, frequency balance).
Upload a song to see its frequencies over time as a spectrogram image, plus a written AI report on the mix's frequency balance.
Analyzes vocal clarity, diction, and masking issues.
Reports on perceived loudness, dynamic range, and impact.
Compares two audio files based on a specific user question.
Suggests an optimal track order for a DJ set based on key and energy.
Identifies tracks in a long DJ mix and generates a timestamped list.
Identifies volume inconsistencies between tracks in a mix.
Checks whether the voice in a song or recording sounds human or AI generated, with a likelihood score and the evidence for both sides.
Determines if two recordings feature the same speaker.
Analyzes similarity and AI likelihood between two tracks.
Identifies emotional characteristics and energy level.
Check your song against a database of registered music before you post it on YouTube, and see any track it matches.
Generates artist bios and media pitches based on audio.
Generates a formatted press release for a new music release.
Generates social media captions and hashtags.
Generates a detailed, positive description of a song.
Fills out Spotify's playlist pitch form fields for you (genres, styles, moods, instruments, and a description) from your uploaded song.
Analyzes music contracts for key clauses and red flags.
Checks consistency in loudness and balance across multiple tracks.
Separates any song into vocals, instrumental, drums, bass, and other instruments for remixing, sampling, or practice.
Removes vocals from any song to create an instrumental, or extracts an isolated acapella, using real AI source separation.
Upload a song, get a karaoke kit: the instrumental with the vocals removed, plus the lyrics as text, from one upload.
Converts audio files between formats (MP3, WAV, AIFF, FLAC) with control over bitrate, sample rate, and bit depth.
Masters your mix to match the sound of a reference track you love, using real reference-matching mastering (Matchering).