Free PitchDetector Alternative
PitchDetector.com converts Hz to musical notes and shows cents deviation. BeatKey Note Frequency Calculator does the same and adds MIDI charts, 808 tuning guides, EQ frequency charts, and a full production workflow reference that PitchDetector does not have.
Same Core Feature, More Depth
PitchDetector.com
Input a frequency, see the closest note and cents deviation. Clean and simple. No MIDI numbers, no production guides, no 808 tuning, no EQ chart, no dark theme. Good for a single quick lookup.
BeatKey Note Frequency Calculator
Same Hz-to-note conversion with cents accuracy, plus MIDI numbers, a full 128-note chart, famous frequency shortcuts (432 Hz, 440 Hz, 528 Hz, middle C), 808 tuning guide, EQ frequency chart, vocal range chart, GM drum map, and integration with BeatKey BPM+key detection and the full suite.
Feature Comparison
| Feature | BeatKey Note Freq | PitchDetector |
|---|---|---|
| Price | Free | Free |
| Account required | No | No |
| Hz to note converter | Yes (with cents accuracy) | Yes (basic) |
| Cents deviation display | Yes (color coded) | Yes (basic) |
| Full 128-note MIDI chart | Yes (filterable) | No |
| MIDI note numbers | Yes | No |
| Famous frequencies shortcuts | Yes (432, 440, 528 Hz, etc.) | No |
| 808 tuning workflow guide | Yes | No |
| EQ frequency chart | Yes | No |
| GM drum map reference | Yes | No |
| Vocal range chart with Hz | Yes | No |
| BPM + key detection link | Yes | No |
| Dark theme | Yes | No |
When You Need More Than Hz to Note
Famous frequency shortcuts
BeatKey's Hz-to-note converter includes one-click buttons for common frequencies: 432 Hz, 440 Hz, 528 Hz, middle C, power line hum (60 Hz/50 Hz), and voice ranges. These save time when you are checking a specific frequency you already know.
808 tuning guide
PitchDetector has no 808 tuning workflow. BeatKey's dedicated guide shows all 36 notes from C1 to B3 with their Hz values, explains how to calculate semitone offsets from a sample's base pitch, and includes DAW-specific instructions for FL Studio, Ableton, and Logic Pro.
EQ frequency chart
The EQ Frequency Chart maps every EQ band to musical notes. If you are boosting at 261 Hz and want to know what note that is (C4 / middle C), BeatKey tells you. PitchDetector does not have an EQ context guide.
MIDI note numbers
When working in a MIDI editor, you often need the MIDI note number alongside the Hz value. BeatKey shows all three together: note name (C4), MIDI number (60), and Hz (261.63). PitchDetector shows only the note name and Hz.
Open Note Frequency Calculator Free
Hz-to-note converter with cents accuracy, MIDI charts, 808 tuning, and EQ guide. Free, no account.
More Free Music Tools
Frequently Asked Questions
What is a good free alternative to PitchDetector for Hz to note conversion?
BeatKey Note Frequency Calculator is a free alternative with the same Hz-to-note conversion plus MIDI numbers, 808 tuning guides, EQ frequency chart, famous frequency shortcuts, and integration with BPM detection and the full BeatKey suite.
Does BeatKey show cents deviation like PitchDetector?
Yes. The Hz-to-note converter shows the cents deviation with color coding: green for within 5 cents (nearly perfect), yellow for 5-20 cents (slightly off), and orange for more than 20 cents (noticeably out of tune). Available at notes.beatkey.app/frequency-to-note.
What note is 440 Hz?
440 Hz is A4 (the A above middle C). This is the standard concert pitch used for instrument tuning worldwide. MIDI note 69. All other notes are tuned relative to A4 = 440 Hz in standard equal temperament.
Is BeatKey free to use?
Yes, completely free. No account, no ads, no subscription. The tool runs locally in your browser and includes all reference pages at no cost.