UD5 Toolkit
BPM to Delay & Reverb Time Calculator ā Music Production
Convert BPM to milliseconds for delay, reverb pre-delay, and LFO rates. Quickly get 1/4, 1/8, dotted, and triplet note timings for perfect audio sync.
Music Tools - Tuner & Metronome
53+ toolsMusical Scale Finder ā Show Me a Scale on Piano
Choose a root note and scale type to see the scale notes highlighted on a piano keyboard. Covers major, natural minor, harmonic minor, and modes.
Reverse Chord Finder ā Name That Chord from Notes
Input the notes you're playing and get all possible chord names, including inversions and slash chords. A lifesaver for songwriters and music theorists.
Musical Interval Identifier ā Ear Training & Theory Tool
Select two notes to instantly name the musical interval between them. Displays semitone count and common enharmonic spellings. Essential for music theory students.
Note Duration Calculator ā BPM to Milliseconds & Seconds
Convert BPM (beats per minute) to note durations in milliseconds or seconds. See whole, half, quarter, eighth, sixteenth, and triplet values for precise music production.
Today in Music History ā Albums, Birthdays & Events
Discover notable music events, album releases, and artist birthdays that happened on this day in history. From classic rock to modern pop milestones.
Random Chord Progression Dice ā Roll a New Song Idea
Roll virtual dice to generate a 4āchord progression in a random key. Includes common pop, jazz, and indie progressions with playback.
Guitar Chord Chart Generator ā Create & Print Custom Chord Sheets
Select chords and the tool arranges them into a clean, printable chord chart. Perfect for songwriting, teaching, or learning a new song.
Capo Chord Transposer ā See Real Chord Shapes
Place a virtual capo on any fret and enter a chord progression. See the actual chord shapes you need to play to sound in the original key.
Interactive Circle of Fifths ā Key Signatures & Chords
Explore the circle of fifths interactively. Tap a key to see its signature, relative minor, and chord family. The ultimate harmony reference for musicians.
Random Bass Groove Generator ā Funk, Rock & Jazz Rhythms
Generate a short bass line in a specific style with standard notation and tab. Use it as a daily warmāup or improvisation prompt for bass players.
Chord Ear Trainer ā Identify Major, Minor, Dim & Aug by Sound
Listen to a chord played with a piano sound and select the correct chord type. Tracks your accuracy and gradually introduces seventh chords.
Melody Dice Roller ā Random Musical Idea Generator
Roll musical dice to generate random melody snippets. Choose a scale, set note range and rhythm, and get an instant starting point for your next composition.
Piano Chord Dictionary ā Click a Root & Type to See Notes
Select a root note and chord type (major, minor, dim, aug, 7th, etc.) to see the keys highlighted on a piano. Inversions and fingering suggestions included.
Vocal Range Finder ā Match Your Voice to Notes on Piano
Play notes on a virtual piano and sing along to find your lowest and highest comfortable pitch. Identifies your voice type (soprano, alto, tenor, bass).
Lyric Rhyme Assistant ā Find Near & Perfect Rhymes for Songwriters
Type a word and see its perfect, near, and slant rhymes with syllable counts. Also highlights the stressed vowel to help match vocal melody.
Guitar Scale Visualizer ā Fretboard Diagrams in Any Key
Choose a scale (major, minor, pentatonic, modes) and a key to see all five CAGED positions on an interactive fretboard. Notes and intervals labeled.
Finger Drum Pad ā Play Beats with Your Keyboard
Assign drum sounds to your keyboard keys and play along. Includes a basic beat recorder so you can loop your own rhythm and jam over it.
Advanced Metronome ā Custom Accents & Polyrhythms
Set the main tempo and add accents on specific beats to practice complex rhythms. Supports polyrhythms like 3:2 and odd time signatures.
Audio BPM Detector ā Find Tempo of an Uploaded Track
Upload an MP3 or WAV file and get an estimated beats per minute using onset detection. DJs and musicians can quickly catalog track tempos.
Piano Key Frequency Finder ā Note to Hz & MIDI Number
Select a piano key to see its frequency in Hz and MIDI note number. Great for tuning, synthesis, or music theory exploration with interactive keyboard.
Monophonic Synth - Online Play with Oscillator & Envelope
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Web Audio Filter Chain - Online Biquad & Convolver
Apply lowpass, highpass, and reverb to an audio source. See frequency response. Create your own guitar pedal. All local.
Audio Loudness Meter - Online LUFS & RMS Analyzer
Measure the integrated loudness of an audio file in LUFS and RMS. Check if your music meets streaming platform standards. Clientāside.
Online BPM Tapper - Tap to Find Beats Per Minute
Tap any key to the beat of a song and the tool calculates the BPM. Also shows average and millisecond delay for loops.
Guitar Effect Chain Simulator - Online Virtual Pedalboard
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
Scale & Mode Explorer - Online All Keys Fretboard/Piano
Pick a scale (Major, Harmonic Minor, Dorianā¦) and a root note. Shows the notes and highlights them on piano & guitar fretboard.
Convolution Reverb Demo - Online Impulse Response Player
Apply realistic reverbs (cathedral, hall, room) to any audio using preāloaded impulse responses. Hear the difference instantly.
Advanced Tap Tempo - Online BPM Averaging & Rhythm
Tap any key multiple times. Shows average BPM, standard deviation, and a visual metronome beat. More accurate than simple tap.
Online Audio Reverb Tool - Add Room Ambience
Add artificial reverb to an audio recording. Choose from small room to large hall. Wet/dry mix. Convolutionābased.
Web MIDI Keyboard Tester - Online Visual Note Display
Connect your MIDI keyboard and see pressed notes visually on a piano roll. Check velocity, channel, and aftertouch. No DAW needed.
Vocal Pitch Monitor & Tuner - Online RealāTime Frequency
Sing or play an instrument into the mic and see the detected pitch on a realātime chromatic tuner. Use for practice or ear training.
Drum Notation Reader - Online Percussion Staff Player
Paste a simple drum tab or select a pattern and hear it played. Learn drum set notation interactively.
Pomodoro Playlist Linker ā Attach a LoāFi Playlist to Each Timer
Set a custom YouTube or Spotify playlist URL that autoāplays when your focus session starts and pauses on breaks. Combine productivity with your favorite tunes.
Metronome with Subdivisions - Online Precise Rhythm Training
Advanced metronome with eighth, triplet, and sixteenth note subdivisions. Accent controls. Web Audio scheduling.
Retro Synth Pad - Online 8ābit Sound Generator
Play a collection of retro 8ābit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Audio to MIDI Converter - Online Transcribe Melody
Analyze a monophonic audio recording and convert the pitch into a MIDI file. Perfect for capturing musical ideas. Client-side.
Random Chord Progression - Online Music Idea
Get a random chord progression (e.g., IāVāviāIV) with a suggested key. Play with builtāin piano sounds. For songwriters.
Piano Chord Finder - Online Visual Keyboard & Notes
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Online Piano Keyboard - Play & Record Simple Melodies
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Beat Sync Tester - Online Tap Tempo & BPM Counter
Tap any key to the beat and get the BPM (beats per minute). Useful for DJs, musicians, and running. Simple and accurate.
Web MIDI Monitor - Online View Raw MIDI Messages
Connect a MIDI controller and see every message in a log. Filter by channel and type. Essential for debugging music apps.
Voice Pitch Detector - Online Live Mic Frequency
See the fundamental frequency (pitch) of your voice in real time using autoācorrelation. For singers and speech training. No upload.
Custom Audio Equalizer - Online 10āBand Adjust & Presets
A 10āband graphic equalizer applied to any audio file or mic input. Save presets. All processing via Web Audio API.
Bass Fretboard Trainer - Online Note Recognition Game
A random note name appears; click the correct position on the bass fretboard. Beat your time and accuracy.
Ukulele Tuner - Online GCEA Standard Tuning Notes
Play reference pitches for standard ukulele tuning. Also works for baritone and other variations. Simple and local.
Piano Sight Reading Trainer - Online Random Note Staff
A random note appears on the grand staff; click the correct piano key. Improve sheet music reading. Multiple clefs.
Online Metronome - Precise Beats per Minute & Time Signature
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Audio Pitch Shifter - Online Change Key Without Speed
Shift the pitch of any audio clip by semitones without affecting playback speed. Perfect for music transposition. Local Web Audio.
Voice Pitch Chart - Online Soprano to Bass Reference
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.
WAV Oscilloscope - Online Visualize Audio Waveform & Spectrum
Load a WAV file and see its real-time oscilloscope trace and frequency spectrum. Zoom and pan. Pure frontend.
Drum Pattern Sequencer - Online Create Beats & Play
Lay down a beat on a grid sequencer for kick, snare, and hi-hat. Play, loop, and adjust tempo. All sound via Web Audio API.
MIDI Note to Frequency Converter - Online Music Tuning
Enter a MIDI note number (0ā127) or a musical note name and get the exact frequency in Hz. Piano keyboard picker.