Convert audio between formats and adjust sample rates, right in your browser.
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Yes. Converting audio files on FormatGrid is completely free, with no watermarks, file limits, or account sign-up required.
Nowhere. Your audio files never leave your device — FormatGrid never uploads, transmits, or stores them on any server. All audio conversion happens locally in your browser's memory and is discarded once you close or refresh the tab.
Most online audio converters upload your files to a remote server, process them there, then download the result back. FormatGrid performs every step locally on your device, eliminating upload time, processing queues, and download delays.