Frequency Meter Online Free — Measure Audio Frequency in Browser

A frequency meter measures the pitch or frequency of an audio signal in real-time. Whether you're tuning an instrument, analyzing audio, or working on sound design, here's how to measure audio frequency online for free.

What is a Frequency Meter?

A frequency meter detects the dominant frequency present in an audio signal at any given moment. It displays the frequency in Hertz (Hz), allowing you to identify musical notes, analyze tonal content, and troubleshoot audio issues. The human ear can typically hear frequencies from 20 Hz to 20,000 Hz (20 kHz).

How to Measure Frequency Using AudioKit

1. Open Frequency Detector — Go to our Frequency Detector tool.
2. Upload audio — Select any audio file.
3. Play and analyze — Press play to see real-time frequency detection.
4. View the note — The tool also maps detected frequencies to musical notes (e.g., A4 = 440 Hz).

Common Uses

• Instrument tuning — Check if your instrument is in tune by measuring its output frequency.
• Audio analysis — Identify problematic frequencies in a mix for EQ adjustment.
• Sound design — Analyze the frequency content of samples for layering and processing.
• Education — Learn about frequency and pitch relationships visually.