Free Sample Rate Converter

Change the sample rate of a recording, for example from 44.1 kHz to 48 kHz for video. Your file is converted in your browser and never leaves your device.

Online Audio Sample Rate Converter

The sample rate is the number of measurements per second in a digital recording. Different uses expect different rates: 44.1 kHz for music, 48 kHz for video. This tool converts a file from one rate to another and keeps its pitch and length exactly as they were.

What Can the Sample Rate Converter Do?

  • Convert up or down: to 8, 16, 22.05, 32, 44.1, 48, 88.2 or 96 kHz.
  • Convert once: the file is read at its own sample rate and converted in a single step, with a filter that removes what the new rate cannot hold.
  • Choose the bit depth: export a 16-bit or a 24-bit WAV.
  • See before you save: the original rate, the channels and the length are shown, along with the size of the new file.

What Changes, and What Does Not

Converting to a higher rate does not add detail: a 44.1 kHz recording converted to 96 kHz contains the same sound in a bigger file. Converting to a lower rate removes the frequencies above half the new rate, so going from 48 kHz to 44.1 kHz loses nothing you can hear, while 16 kHz keeps speech intelligible but takes the brightness out of music. The pitch, the speed and the length never change. If your audio plays too fast, too slow or at the wrong pitch in a video project, the file was read at the wrong rate; converting it to the rate of the project fixes that. What Is Sample Rate? 44.1 kHz vs. 48 kHz explains the background.

Who Is It For?

Video editors who need 48 kHz audio for a timeline, podcasters and musicians preparing files for a platform or a distributor, developers who need 16 kHz speech for recognition software, and anyone who has been asked for a file “at 44.1” or “at 48”. To change the format as well, convert the result with the WAV to MP3 Converter.

How to Change the Sample Rate in 3 Steps

Step 1

Open Your Audio

Choose a file from your device. MP3, WAV, FLAC and M4A work in all modern browsers; OGG depends on your browser.

Step 2

Choose the Sample Rate

Pick the target rate and the bit depth. The original rate of your file is shown above the settings.

Step 3

Convert and Download

Click Convert & Download WAV. Long files take a few seconds.

Select Audio File

Drag and drop a file here or choose one from your device. Supported formats: MP3, WAV, FLAC, M4A and OGG (OGG depends on your browser).

Your waveform will appear here after you choose a file.

Time: 00:00 / 00:00
Tip: Use headphones to hear the changes clearly. On a phone, make sure silent mode is off.

Conversion Settings

The file already has this sample rate. It will be saved again without conversion.

Export

The file is exported as a 16-bit WAV with the same sample rate and channels as the original.

Tip: Need an MP3? Export a WAV here, then convert it.
WAV to MP3 Converter

Frequently Asked Questions

Is the Sample Rate Converter really free?
Yes. The Sample Rate Converter is free to use, with no sign-up and no daily limits.

Are my audio files safe and private?
Yes. The audio is processed in your browser on your own device. Your files are never uploaded to our servers.

How do I convert 44.1 kHz to 48 kHz?
Open the file, choose 48 kHz as the target sample rate and click Convert & Download WAV. The new file has the same length and pitch and works in 48 kHz video projects.

Does converting the sample rate change the pitch or the speed?
No. A proper conversion recalculates the samples, so the audio sounds the same and lasts the same time. Pitch and speed change only when a file is played at a rate other than the one it was recorded at.

Does a higher sample rate improve the quality?
Not after the fact. Converting an existing file to a higher rate cannot add frequencies that were never recorded; it only makes the file larger. Higher rates matter at the recording stage, and even there the audible benefit is debated.

Should I use 44.1 kHz or 48 kHz?
Use 44.1 kHz for music releases and 48 kHz for anything that goes with video. If a platform or a client names a rate, use that one.

Is quality lost in the conversion?
Very little. The filter is accurate to well below the level of audibility, and frequencies up to 20 kHz pass unchanged at 44.1 kHz and above. When you convert to a lower rate, the frequencies above half the new rate are removed, which is unavoidable.

Which formats can I open?
MP3, WAV, FLAC and M4A files open in all modern browsers; OGG depends on your browser. The result is downloaded as a 16-bit or 24-bit WAV.

Do I need to install any software?
No. The tool runs in your web browser on computers, phones and tablets.