Historical Pitch Converter – Online A415, A430, A440, A465
Transpose a note between modern concert pitch and common historical pitches. Early music helper.
UD5 Toolkit
Transpose a note between modern concert pitch and common historical pitches. Early music helper.
Tune your guitar using the browser microphone. Detects pitch and shows deviation from standard tuning. No installation, pure client-side audio processing.
Play pure tones at various frequencies to estimate your hearing range. Simple and educational.
Sing or play an instrument into the mic and see the detected pitch on a real‑time chromatic tuner. Use for practice or ear training.
Enter a hex color and hear a tone mapped to its hue. Explore the connection between color and sound. Fun perceptual experiment.
See the fundamental frequency (pitch) of your voice in real time using auto‑correlation. For singers and speech training. No upload.
Shift the pitch of any audio clip by semitones without affecting playback speed. Perfect for music transposition. Local Web Audio.
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.