10 free tools · no sign-up
Free Music & Sound Tools
Measure BPM, tune instruments, identify chords and intervals, generate tones, and split stereo audio.
Music theory becomes easier when you can hear the answer immediately. These browser tools measure tempo, play reference tones, identify chords and intervals, generate test signals, and split stereo recordings. Most run through the Web Audio API, so headphones and a user gesture are usually needed before sound starts.
BPM Tap Counter
Tap along to a song and measure its beats per minute.
Open toolOnline Metronome
Play a steady beat with adjustable tempo, accent, and time signature.
Open toolMusical Note Frequency Calculator
Find the frequency of any note and octave.
Open toolGuitar Tuning Reference
Play standard and alternate guitar tuning reference tones.
Open toolPiano Note Frequency Finder
Find frequencies for every piano key and octave.
Open toolChord Identifier
Identify a chord from the notes you select.
Open toolMusical Interval Calculator
Identify the interval between two notes and its semitones.
Open toolAudio Frequency Generator
Generate sine, square, triangle, and sawtooth test tones.
Open toolDecibel Converter
Convert dB to voltage, power, and amplitude ratios.
Open toolStereo Audio Channel Splitter
Separate left and right channels into individual audio files.
Open tool