Music & Audio Tools
A focused collection of browser-based music and audio tools for ear training, theory, practice planning, and live sound. Everything runs locally in your browser with no accounts, no uploads, and no plugins.
Whether you are practicing scales, preparing a live PA, transposing chords for a gig, or planning your weekly practice sessions, these tools give you instant, practical support right in your browser.
All audio generation and processing is handled by your device using the Web Audio API. No MIDI or audio data is sent to any server, so your practice sessions and ideas stay completely private.
Ear Training & Theory
Interactive tools that train your musical ear, help you understand harmony, and generate ideas for songwriting and improvisation. Ideal for self‑study, lessons, and band rehearsals.
Circle of Fifths
Explore the circle of fifths with visual key relationships, relative minors, and common progressions to understand harmony and modulation at a glance.
Open ToolCircle of Fifths Trainer
Drill key signatures and scale degrees with random prompts and instant feedback to internalize sharps, flats, and relative keys.
Open ToolScale Finder
Find matching scales for a given set of notes or chords, and discover alternative scales for solos, reharmonizations, and modal sounds.
Open ToolMusic Interval Trainer
Practice melodic and harmonic intervals with randomized playback, interval naming, and visual feedback to improve pitch recognition.
Open ToolChord Quality Ear Trainer
Learn to distinguish major, minor, diminished, and extended chords by ear with random examples and graded difficulty levels.
Open ToolProgression Ear Trainer
Train your ear on common chord progressions like I–V–vi–IV or ii–V–I and learn to recognize harmonic movement in real songs.
Open ToolSongwriting & Harmony
Generators that help you create chord progressions, transpose existing songs into new keys, and quickly explore harmonic options when writing or arranging music.
Chord Generator
Generate voicings for triads, seventh chords, and extended chords in any key with optional inversions and instrument‑friendly spellings.
Open ToolChord Progression Generator
Create chord progressions based on common patterns and genres, with Roman numeral and chord symbol views for easy transposition.
Open ToolChord Randomizer
Generate random chords and progressions to spark new song ideas, practice unfamiliar voicings, or break out of writing ruts.
Open ToolChord & Note Transposer
Transpose chords, melodies, and lead sheets to any key while keeping enharmonic spellings readable for guitar, piano, or horn players.
Open ToolSong Arranger
Plan song structures with labeled sections (intro, verse, chorus, bridge) and bar counts, then export a roadmap for band rehearsals or studio sessions.
Open ToolPractice & Live Tools
Utilities for day‑to‑day practicing and live sound: lock in your timing, tune instruments quickly, size your PA system, or schedule focused practice blocks.
Online Metronome
A precise browser metronome with tempo tap, subdivisions, and accent patterns to support everything from slow practice to complex polyrhythms.
Open ToolOnline Guitar Tuner
Tune your guitar, bass, or other string instruments with reference tones and microphone input, supporting standard and custom tunings.
Open ToolDelay Time Calculator
Convert BPM to musical delay times (1/4, 1/8, dotted, triplet) in milliseconds for tempo‑synced delays in your DAW or live rig.
Open ToolRhythm Trainer
Practice reading and clapping rhythms with random patterns, click tracks, and visual notation to improve timing and subdivision accuracy.
Open ToolMusic Practice Planner
Plan structured practice sessions with time blocks for technique, repertoire, ear training, and improvisation, then track your weekly progress.
Open ToolEvent & PA Helpers
For live events and rehearsals, combine your music tools with event planning utilities like PA sizing and drinks or pizza planners for your next band party or gig.
PA System Size Calculator
Estimate how much PA power you need for your venue size, audience, and music style to avoid underpowered or oversized systems.
Open ToolParty Pizza Planner
Plan how many pizzas you need for band rehearsals, studio days, or gig after‑parties based on group size and appetite levels.
Open ToolDrinks Calculator
Estimate the amount of drinks for concerts, rehearsals, or private shows based on guest count, event duration, and drink preferences.
Open ToolFrequently Asked Questions
Common questions about the Music & Audio tools on LocalCalcs.
Do these tools play audio in my browser?
Yes. All metronome clicks, tones, and training sounds are generated with the Web Audio API directly in your browser. No audio is streamed from a server or recorded automatically.
Are my practice data or ideas stored anywhere?
No. Most tools run stateless in your browser. If a tool offers saving presets or settings, this uses local storage on your device only. Nothing is sent to a remote database.
Can I use these tools in lessons or group classes?
Yes. Teachers regularly use the tools on shared screens or projectors for ear training, rhythm exercises, and theory explanations. Everything runs in a regular modern browser.
Do I need to install plugins or a DAW?
No. A modern browser (Chrome, Firefox, Edge, Safari) is enough. The tools are designed to supplement your DAW and practice routine without requiring extra software.
Are the tools free to use?
Yes. All Music & Audio tools on LocalCalcs are free to use in the browser. The project is financed through ads and does not require sign‑up or subscriptions.
Embed this Calculator on Your Website
You can integrate this calculator for free into your own website. Get the embed code on our overview page.