# Audio Beat Matcher Adjust tempo to match a target BPM > Canonical page: https://elysiatools.com/en/tools/audio-beat-matcher - **Category:** Media - **Keywords:** audio, bpm, tempo, match ## Overview Uses BPM ratio (target ÷ source) to time-stretch with atempo while keeping pitch; can auto-detect source BPM via MusicTempo. ## Inputs - **Audio File** (file): Select an audio file - **Source BPM** (number): Leave empty to auto-detect - **Target BPM** (number): e.g. 128 - **Output Format** (select) ## When to use - When synchronizing multiple tracks for DJ mixes or live performances to ensure seamless transitions. - For aligning background music with video edits to match scene rhythms in post-production. - To standardize BPM in music libraries for dance classes or fitness routines requiring consistent beats. ## How it works - Upload an audio file in a supported format like MP3, WAV, or AAC. - Enter the source BPM manually or leave it blank for automatic detection using MusicTempo. - Specify the target BPM between 40 and 240, with a default of 128. - Select an output format such as MP3, FLAC, or WAV and download the adjusted audio file. ## Use cases - Matching tempos for DJ sets to enable smooth beatmatching during performances. - Synchronizing audio with video clips in editing software for cohesive multimedia projects. - Creating workout playlists with uniform BPM for rhythm-based exercise routines. ## Frequently asked questions ### What audio file formats are supported for upload? You can upload audio files in common formats like MP3, WAV, AAC, M4A, OGG, Opus, and FLAC, as indicated by the audio/* file type. ### How accurate is the auto-detection of source BPM? The tool uses the MusicTempo algorithm to estimate BPM, which is generally reliable for most music but may vary with complex audio. ### Does adjusting tempo affect the audio pitch? No, the tool uses atempo for time-stretching, which changes speed without altering pitch. ### What is the range for target BPM? Target BPM can be set between 40 and 240, with a default value of 128. ### Can I process multiple files at once? No, the tool processes one audio file at a time, as indicated by the single file upload option. ## 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 Loudness Normalize (LUFS)](https://elysiatools.com/en/tools/audio-loudness-normalize): Normalize audio to a target loudness (LUFS) using FFmpeg loudnorm - [Audio Master Reference Match](https://elysiatools.com/en/tools/audio-master-reference-match): Match your mix's tonal balance and loudness to a reference track and export the corrected master, with a before/after third-octave band report. - [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 - [Sidechain Pump Generator](https://elysiatools.com/en/tools/audio-sidechain-pump-generator): Apply EDM-style tempo-synced pumping ducking to any audio without a kick-drum sidechain file — volume-envelope automation in the style of LFO Tool / Kickstart. - [Audio Time Stretch](https://elysiatools.com/en/tools/audio-time-stretch): Stretch or compress audio to a target duration - [Vocal / Instrumental Balance](https://elysiatools.com/en/tools/audio-vocal-instrumental-balance): Measure and adjust vocal level relative to an instrumental bed, with a transparent loudness report. - [Audio Add Chapters](https://elysiatools.com/en/tools/audio-add-chapters): Add chapters to an audio file from a label/chapters file ## 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 - [Seamless Audio Loops, Ambience, and Rhythm Beds](https://elysiatools.com/en/hubs/seamless-audio-loops-ambience-and-rhythm-beds): Find clean loop seams, generate or extend ambience, align musical timing, and finish repeatable audio beds with fades, crossfades, and tempo-synced motion. - [Audio Pitch, Tempo, Looping, and Reverse Playback Tools](https://elysiatools.com/en/hubs/audio-pitch-tempo-remix-workflows): Shape pitch, tempo, speed, beat alignment, loops, reverse playback, and stutter patterns into a controlled audio remix workflow.