Suggest a tool

Tell us what tool you wish existed. We build one every week from real user requests.

Mix it right.

Note Frequency Calculator (Hz ↔ Note)

Convert any frequency to its nearest equal-temperament note and back.

Result

Nearest note

A4

Cents offset

0

Exact Hz

440

About this tool

Type a frequency to see the closest note (with cents offset) or type a note and octave to get the exact Hz. The r/musictheory and r/WeAreTheMusicMakers 'what note is 440 Hz' calculator.

Related tools

More music you might find useful.

Semitone Transpose

Transpose any root note up or down by N semitones.

Chord Progression Builder

Build a Roman-numeral chord progression from a key and see the diatonic chords.

Circle of Fifths Explorer

See the key signatures, relative minors, and sharp/flat counts for every key.

Other categories

Looking for something different? Browse the rest of the catalog.

Sponsored suggestions

Some links below are affiliate links. We may earn a commission if you purchase through them, at no extra cost to you.