Sample Rate Converter

Resample your audio frequencies (kHz) instantly for Video, CD, or Voice perfectly.

Audio Sample Rate Converter

Easily upsample or downsample the frequency of your audio files to match industry standards.

What is it?

The Sample Rate Converter is a free browser-based utility that changes the audio resolution (measured in kHz) of a sound file. Sample rate determines how many times per second the audio is "sampled". Whether you are starting with a high-res .flac, a standard .mp3, or a voice memo in .m4a, you can resample it to any frequency and export the result securely as a .wav or .mp3 file. Since it works in your browser, your files remain 100% private.

How to use it?

Load your audio file into the drop zone. Choose your target Sample Rate from the dropdown menu (e.g., 44.1kHz for music, 48kHz for video). You can preview the audio directly from the player. When you're ready, click to export as .wav or .mp3. The tool will process the file asynchronously, showing a real-time progress bar without freezing your browser.

Who uses this tool?

This tool is crucial for video editors who must sync all audio to 48 kHz to prevent audio drift in Premiere or Final Cut. It is also used by game developers to compress large .wav files to 22.05 kHz to save memory, and by musicians preparing their masters for CD (44.1 kHz).

Select Audio File

Supported formats: WAV, MP3, M4A, OGG, FLAC, AAC

Recommendation: For the best experience, use headphones. If you are on a mobile device without headphones, make sure your device is not on Silent/Mute mode.
Loading audio... Please wait
00:00 / 00:00

Choose Target Sample Rate

Which Sample Rate Should I Choose?

If you are unsure which frequency to pick, refer to this industry-standard guide below. Note: Upsampling a low-quality file to 96kHz will increase the file size but cannot magically create lost frequencies.

Sample Rate Best Used For Quality / File Size
8 kHz - 16 kHz Voice memos, Walkie-Talkies, VoIP, Telephone audio. Low Quality / Small Size
22.05 kHz - 32 kHz AM/FM Radio broadcasts, optimizing sounds for old mobile games. Medium Quality
44.1 kHz The Universal Standard. CD Audio, Spotify, Apple Music, MP3s. High Quality
48 kHz The Video Standard. YouTube, TV, Movies, Podcasts, TikTok. High Quality
88.2 kHz - 96 kHz Professional Studio Recording, Audio Mastering, Audiophile High-Res. Ultra Quality / Huge Size

Export Resampled Audio

Note: MP3 format does not support high-resolution frequencies (88.2 kHz and 96 kHz). Only .WAV export is available for these selections.

What is the Smart AudioLab Studio?

Welcome to the ultimate browser-based audio engineering hub. Free Audio Lab transforms your standard web browser into a powerful, zero-latency Digital Audio Workstation (DAW). Designed for producers, podcasters, video editors, and content creators, our platform eliminates the need for expensive software subscriptions, complex installations, and intrusive account sign-ups.

Whether you are performing surgical 3-Band EQ sweeps, analyzing true peak LUFS for streaming compliance, calculating harmonic Camelot keys for a DJ mix, or seamlessly converting lossless formats, every tool you need is right at your fingertips.

Simply drag and drop your audio files into the designated workspace. Because we leverage modern WebAudio API technology, all processing—from waveform analysis to pitch shifting, phase inverting, and rendering—happens directly within your browser. This means zero wait times for server uploads, no file size limits, and an unparalleled level of data security.

Local Processing

Everything is computed locally on your device's own CPU and RAM. Enjoy lightning-fast rendering and real-time playback without the lag of traditional cloud-based converters.

100% Privacy

Your files never leave your device. We do not upload, store, monitor, or collect your audio data on any external servers. What you create stays entirely yours.

Pro Quality

Export your finished tracks with industry-standard precision. Maintain lossless audio integrity, hit exact true peak levels, and ensure your mix is ready for global distribution.

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