HzGenerator

Frequency to Note Converter

Convert any frequency to its nearest musical note, or find the exact frequency of any note, with real-time cents accuracy.

Nearest Note
A4
-500 Cents+50

Music Notation

Standard staff notation of the current note

Download Report

Export this conversion as a file

Full Frequency to Note Reference Chart

Every note from octave 0 to 8 with its exact frequency in Hz

NoteFrequency (Hz)Use
C016.35
C♯017.32
D018.35
D♯019.45
E020.60
F021.83
F♯023.12
G024.50
G♯025.96
A027.50
A♯029.14
B030.87
C132.70
C♯134.65
D136.71
D♯138.89
E141.20
F143.65
F♯146.25
G149.00
G♯151.91
A155.00
A♯158.27
B161.74
C265.41
C♯269.30
D273.42
D♯277.78
E282.41
F287.31
F♯292.50
G298.00
G♯2103.83
A2110.00
A♯2116.54
B2123.47
C3130.81
C♯3138.59
D3146.83
D♯3155.56
E3164.81
F3174.61
F♯3185.00
G3196.00
G♯3207.65
A3220.00
A♯3233.08
B3246.94
C4261.63
C♯4277.18
D4293.66
D♯4311.13
E4329.63
F4349.23
F♯4369.99
G4392.00
G♯4415.30
A4440.00
A♯4466.16
B4493.88
C5523.25
C♯5554.37
D5587.33
D♯5622.25
E5659.26
F5698.46
F♯5739.99
G5783.99
G♯5830.61
A5880.00
A♯5932.33
B5987.77
C61046.50
C♯61108.73
D61174.66
D♯61244.51
E61318.51
F61396.91
F♯61479.98
G61567.98
G♯61661.22
A61760.00
A♯61864.66
B61975.53
C72093.00
C♯72217.46
D72349.32
D♯72489.02
E72637.02
F72793.83
F♯72959.96
G73135.96
G♯73322.44
A73520.00
A♯73729.31
B73951.07
C84186.01
C♯84434.92
D84698.64
D♯84978.03
E85274.04
F85587.65
F♯85919.91
G86271.93
G♯86644.88
A87040.00
A♯87458.62
B87902.13

Hz to Note Converter & Frequency to Note Converter for Musicians

Most frequency converters just spit out a number. This one shows you what that number actually means musically — the exact note, how sharp or flat it is in cents, and what it looks like written on a real musical staff. Whether you're tuning an instrument, identifying a mystery tone, or double-checking test equipment, it's built to answer the question fast and show its work.

What's Inside

Hz to Note Conversion

Type any frequency from 1 Hz to 20,000 Hz and get the nearest musical note name and octave immediately, with no guesswork.

Note to Hz Lookup

Pick a note and octave on the keypad and see its exact frequency in Hz, calculated against standard A4 = 440 Hz tuning.

Cents-Accurate Tuning Meter

A live needle shows exactly how many cents sharp or flat your frequency is from the nearest note, color-coded green, amber, or red so you can tell at a glance if it's in tune.

Real Staff Notation

Every note renders on an actual musical staff with proper clef switching (treble above middle C, bass below), sharps, and ledger lines — not a simplified drawing.

Export Your Results

Download any conversion as a TXT, CSV, JSON, or XML file, ready to drop into a report, a spreadsheet, or a script.

Full Reference Chart

Browse every note from octave 0 to 8 with its exact frequency, searchable by note name or Hz, and filterable by octave.

How to Use the Converter

Switch between "Hz to Note" and "Note to Hz" with the toggle at the top. In Hz to Note mode, type a frequency and watch the note, cents offset, and notation update live. In Note to Hz mode, tap a note letter and set the octave to see its exact frequency. Press play any time to hear the tone out loud, and use the reference chart below if you'd rather browse than type.

Frequently Asked Questions