# Audio Loudness Normalize (LUFS) Normalize audio to a target loudness (LUFS) using FFmpeg loudnorm > Canonical page: https://elysiatools.com/en/tools/audio-loudness-normalize - **Category:** Media - **Keywords:** audio, loudness, normalize, lufs, ebu-r128 ## Overview This tool normalizes audio files to a target loudness level measured in LUFS (Loudness Units Full Scale) using FFmpeg's loudnorm filter. It ensures consistent volume across tracks, making it ideal for podcasts, videos, and music that require standardized audio levels. ## Inputs - **Audio File** (file): Select an audio file - **Target Integrated Loudness (LUFS)** (number): -16 - **Target True Peak (dBTP)** (number): -1.5 - **Target LRA** (number): 11 - **Output Format** (select) ## When to use - When audio files have inconsistent loudness and need standardization for a uniform listening experience. - For preparing content to meet broadcasting or streaming loudness standards like EBU R128. - When mixing audio from multiple sources, such as interviews or background music, to achieve balanced playback. ## How it works - Upload an audio file in a supported format, such as MP3, WAV, or AAC. - Set the target integrated loudness (LUFS), true peak (dBTP), and loudness range (LRA) using the provided options. - Select the desired output format from choices like MP3, AAC, or FLAC. - Download the normalized audio file, which will have the specified loudness characteristics. ## Use cases - Podcast production to ensure all episodes have similar loudness levels for better listener engagement. - Video editing to normalize dialogue and background music, meeting broadcast standards for platforms like YouTube or TV. - Music mastering to achieve consistent playback volume across different devices and streaming services. ## Frequently asked questions ### What is LUFS and why is it used? LUFS stands for Loudness Units Full Scale, a standard for measuring audio loudness. It is used to ensure consistent volume levels across different audio tracks and platforms. ### Can I normalize audio without losing quality? Yes, the tool uses FFmpeg's loudnorm filter to adjust loudness while preserving audio quality, especially when outputting to lossless formats like FLAC or WAV. ### What audio formats are supported for input and output? The tool accepts various audio formats for input and outputs in MP3, AAC, M4A, OGG, Opus, FLAC, or WAV, depending on your selection. ### How do I set the target loudness values? You can specify the target integrated loudness (default -16 LUFS), true peak (default -1.5 dBTP), and loudness range (default 11) using the numeric inputs provided. ### Is there a limit on file size or duration? Yes, the audio file must be under 200 MB. There is no specific duration limit, but larger files may take longer to process. ## Related tools - [Batch Audio Normalize](https://elysiatools.com/en/tools/audio-batch-normalize): Normalize multiple audio files to a target peak level with consistent volume across the batch - [Audio Beat Matcher](https://elysiatools.com/en/tools/audio-beat-matcher): Adjust tempo to match a target BPM - [Audio Limiter](https://elysiatools.com/en/tools/audio-limiter): Apply a limiter to prevent clipping - [Audio Loudness LUFS Normalizer](https://elysiatools.com/en/tools/audio-loudness-lufs-normalizer): Measure integrated LUFS, true peak, and LRA, then normalize audio to Spotify, Apple Music, broadcast, or custom targets - [Audio LUFS Normalizer](https://elysiatools.com/en/tools/audio-lufs-normalizer): Normalize audio to broadcast/podcast LUFS standards - [Audio Normalize (Peak)](https://elysiatools.com/en/tools/audio-normalize): Normalize audio to a target peak level (e.g., -0.1 dB) using two-pass max-volume detect - [Audio Podcast Trailer Builder](https://elysiatools.com/en/tools/audio-podcast-trailer-builder): Assemble a short podcast trailer from intro music, up to 5 highlight clips, a music bed under the clips, and a loudness target. - [Audio Time Stretch](https://elysiatools.com/en/tools/audio-time-stretch): Stretch or compress audio to a target duration ## Samples - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows ## Related content - [Audio Loudness, Dynamics, and Mastering Delivery Tools](https://elysiatools.com/en/hubs/audio-mastering-loudness-workflows): Measure LUFS and true peak, normalize loudness, shape dynamics, and prepare podcast, broadcast, or music files for cleaner audio delivery in one mastering-focused hub. - [Audio Encoding and Format Conversion Tools](https://elysiatools.com/en/hubs/audio-convert): Compare audio format conversion, bitrate changes, sample-rate conversion, codec swaps, and export tools in one hub for delivery and archive workflows. - [Audio Editing and Cleanup Tools](https://elysiatools.com/en/hubs/audio-utility): Compare audio trimming, silence removal, fades, mixing, and denoise tools in one hub for podcast, voiceover, and music cleanup workflows. - [Audio Preview, Tone, and Effect Generator Tools](https://elysiatools.com/en/hubs/audio-generate): Compare audio preview generation, silence creation, ringtone building, fingerprinting, loudness reports, and effect-style audio generators in one hub.