Best Free LUFS Meter
Updated October 2026
A LUFS meter measures loudness over time, which matches how we hear. For a quick check of a finished file, a free meter that reads loudness and true peak is enough.
The short version
- Look for integrated loudness (LUFS) and true peak, not only the sample peak.
- Measure the whole file, not a short section.
- The free LUFS meter on this site measures a file in your browser.
- Check the true peak after any change to the level.
What to measure
Integrated loudness in LUFS for the whole file, and the true peak in dBTP. Short-term readings change every moment, so use the integrated value for a final check.
Free options
- The free LUFS meter on this site measures a file in your browser, and nothing is uploaded.
- Audacity and most DAWs offer loudness analysis in their menus, depending on version.
- Tunedzy sets a file to a loudness target and checks the true peak when it exports.
How to use it
Measure the file, compare with your target, then adjust and measure again. The LUFS explanation and the loudness guide cover the targets.
Measure the loudness in your browser
The free LUFS meter on this site measures a file in your browser. Tunedzy sets the level and checks the peak on export.
Free tools for this
Frequently asked questions
Is a LUFS meter the same as a volume meter?
No. A volume meter shows peaks; a LUFS meter shows average loudness over time.
Which number matters most?
For a final file, the integrated LUFS and the true peak.
Is my file uploaded to the meter?
The meter on this site works in your browser; the file is not uploaded.
Keep going
All guides and comparisons · Tunedzy Go on your phone · Pricing