Audio Resampler

Fix compatibility issues or prepare audio for different platforms. Resampling changes how many times per second your audio is measured — different devices and services require different rates.

Drop your audio file here or click to browse

Supports MP3, WAV, OGG, FLAC up to 100MB

How to Resample Audio Online

Upload Your Audio File

Drag and drop your audio file into the upload area or click to browse. Supports MP3, WAV, OGG, and FLAC files up to 100 MB.
Choose a Target Sample Rate

Select from quick presets like CD to Video (44.1 kHz to 48 kHz), For YouTube, or For Podcast. You can also enter a custom sample rate in Hz.
Resample Your Audio

Click Resample Audio. The tool processes your file entirely in the browser using the Web Audio API with high-quality resampling algorithms. No server upload required.
Preview and Download

Listen to the resampled audio directly in your browser. Once satisfied, click Download to save the resampled file as a WAV to your device.

Common Use Cases for Audio Resampling

Video Editing and Post-Production

Most video editing software and broadcast standards require 48 kHz audio. If your music or voiceover was recorded at 44.1 kHz, resampling ensures sync and compatibility across your entire timeline.

Podcast and Voice Optimization

Reduce file size by downsampling voice recordings to 22.05 kHz or 16 kHz without noticeable quality loss. Spoken content rarely benefits from sample rates above 24 kHz, making smaller files ideal for podcast hosting.

Music Distribution and Streaming

Streaming platforms like Spotify and Apple Music accept 44.1 kHz or 48 kHz audio. If your tracks were recorded at higher rates (96 kHz or 192 kHz), downsample them to meet platform specifications while maintaining audible quality.

Combining Audio from Multiple Sources

When merging tracks recorded at different sample rates, mismatched rates cause glitches and drift. Resample all sources to a common rate before mixing to get clean, artifact-free output.

Why use our Audio Resampler?

Our audio resampler changes the sample rate of an audio file to match a platform or a project. Whether you need CD quality (44.1 kHz), the video and broadcast standard (48 kHz), or a smaller voice recording at 16 kHz, the quick presets cover the common conversions and a custom field covers the rest. The work happens in your browser: an OfflineAudioContext from the Web Audio API resamples the decoded audio and the result is written as a lossless WAV, whatever you put in. Decoding relies on the browser's own audio decoders, so FLAC and OGG support depends on the browser you are in. Files up to 100 MB are accepted and the file itself stays on your device.

Audio resampling is the process of converting an audio file from one sample rate to another. Sample rate determines how many snapshots of sound are captured each second, measured in Hertz (Hz). Standard rates include 44.1 kHz for CD-quality music, 48 kHz for video and broadcast, and 96 kHz or 192 kHz for high-resolution studio recordings. Changing between these rates is essential when your audio needs to meet the specifications of a particular platform, device, or workflow.

This online audio resampler runs entirely in your browser on the Web Audio API. The file is not uploaded to any server, so your recordings stay on your device. Load an MP3, WAV, OGG or FLAC file up to 100 MB, choose a target sample rate from the quick presets or enter a custom value, and download the result as a lossless WAV. If you also need to change the file format, use the Audio Format Converter, which writes MP3, OGG, FLAC or AAC when your browser can encode them. For trimming silence or cutting sections before resampling, the Audio Trimmer lets you edit audio without leaving your browser.

Whether you are preparing voiceover for a video project, shrinking podcast episodes for faster downloads, extracting audio from video with the Video to Audio tool and then matching a target rate, or combining recordings from different devices, this tool handles the conversion in seconds. Check the metadata before and after resampling with the Audio Metadata Extractor to confirm the new sample rate was applied.

How it compares

Desktop audio editors like Audacity and Adobe Audition include resampling as one feature among hundreds, but they require installation, project setup, and navigating complex menus for a simple rate conversion. Online alternatives often upload your files to remote servers, raising privacy concerns for unreleased music or confidential recordings. This browser-based audio resampler runs entirely on your device with no upload, no signup, and no usage limits. Processing uses the Web Audio API's built-in high-quality resampling algorithm, the same engine used by professional web applications.

Compared to command-line tools like FFmpeg or SoX, this resampler offers an immediate visual interface with quick presets for common conversions such as 44.1 kHz to 48 kHz. You get a real-time audio preview before downloading, something that requires extra steps in terminal-based workflows. For users who need batch processing or scripting, FFmpeg remains the better choice, but for quick one-off conversions this tool is faster and requires zero setup.

Audio Resampling Tips

Always resample before editing. Converting sample rates after applying effects can introduce subtle artifacts that degrade your final mix.
Use 48 kHz as your default for video projects. It is the universal standard for film, television, YouTube, and streaming platforms.
Downsampling removes frequencies above the new Nyquist limit. For music, avoid going below 44.1 kHz to preserve the full audible spectrum (20 Hz to 20 kHz).
For voice-only content like podcasts or phone systems, 16 kHz to 22.05 kHz is sufficient and dramatically reduces file size compared to 44.1 kHz or 48 kHz.
If you need a different output format after resampling, use an audio format converter to encode the WAV result into MP3, OGG, or FLAC.

Frequently Asked Questions

What is sample rate?

Sample rate is the number of audio samples captured per second, measured in Hz. Higher sample rates capture more detail but create larger files. Common rates: 44.1 kHz for music, 48 kHz for video.

What sample rate should I use?

44.1 kHz is CD quality and good for music. 48 kHz is standard for video and streaming platforms. Use our Quick Presets for automatic recommendations based on your use case.

Will resampling affect audio quality?

Yes, in one direction. Downsampling permanently removes the high-frequency content above the new Nyquist limit, so 48 kHz down to 16 kHz is a real loss. Upsampling adds no new detail but costs nothing in quality; it only improves compatibility. The Web Audio API resampler is used for both, which keeps artifacts low.

Are my files uploaded to a server?

No, not the file. The resampling runs in your browser and the tool code sends no part of your audio to a server. The page itself loads analytics and ad scripts, as most websites do, so a network monitor shows requests from those. They are separate from the tool code.

What output format is used?

Every resampled file is written as a lossless WAV, whatever format you put in. If you need MP3, OGG or FLAC afterwards, run the WAV through the Audio Format Converter, which offers those formats when your browser can encode them.

What audio formats can I resample?

MP3, WAV, OGG and FLAC files up to 100 MB; anything larger is refused before decoding starts. The resampled output is always a lossless WAV. Decoding uses the browser's own audio decoders, so FLAC and OGG support depends on the browser you are in. If you need a different format afterward, use the Audio Format Converter.

What is the difference between 44.1 kHz and 48 kHz?

44.1 kHz is the CD standard and captures frequencies up to 22.05 kHz, covering the full range of human hearing. 48 kHz is the video and broadcast standard, capturing up to 24 kHz. For most listeners the difference is inaudible, but matching the correct rate avoids sync issues in video editing.

Can I upsample audio to improve quality?

No. Upsampling increases the sample rate but adds no audio detail that was not in the original recording. It is useful for meeting a format requirement, such as taking a 44.1 kHz file to 48 kHz for a video editor, but it will not make a low-quality recording sound better.

Does this audio resampler require a signup?

No. The resampler is free, with no signup and no usage limits. The work happens in your browser, so there is no server cost behind the page to pass on to users.

What sample rate does YouTube recommend?

YouTube recommends 48 kHz for uploaded audio. While it accepts other rates, 48 kHz avoids an extra server-side conversion step and preserves the best possible quality on the platform.