Get started in seconds
Learn how to use the instant estimated sound-level display, apply optional single-point calibration, and understand the limits of browser measurements.
1
Allow Microphone Access
When you click "Start Measurement", your browser will ask for microphone permission. Click "Allow" so the tool can measure sound levels.
2
Position Your Device
For more consistent instant estimates:
- •Hold your device at arm's length from the sound source
- •Point the microphone toward the sound
- •Don't cover the microphone with your hand
- •Keep the device steady during measurement
3
Start Measuring
Click "Start Measurement". You'll see:
- •Live input reading - An instant estimated sound level based on this device's microphone input
- •Scale label - The result is an unweighted browser estimate, not a certified dBA or dBC measurement
- •Waveform - Visual representation of sound waves
- •Statistics - Max, Min, and Average values
- •History chart - Sound level trends over time
4
Calibrate (Optional)
To create a device-specific estimate:
- 1.Use a reference meter to measure a known sound
- 2.Click "Calibrate" while measuring the same sound
- 3.Enter the reference value from your physical meter
- 4.Click "Calibrate" to save the offset
5
Export Data
Click "Export" to download your measurement history as a CSV file. Useful for tracking noise levels over time or sharing data.
Tips for More Consistent Readings
- ✓Different devices have different microphone sensitivities
- ✓Calibration applies one device-specific offset; it does not certify the microphone
- ✓Avoid wind noise when measuring outdoors
- ✓This tool provides estimates, not professional-grade measurements
- ✓For critical applications, use a certified sound level meter
Browser Compatibility
This tool works best on:
✓Chrome
✓Firefox
✓Safari
✓Edge