Base64 Converter
Convert text to Base64 and Base64 back to text — both directions, instantly, in your browser.
Both directions
Encode and decode from the same screen — one click to switch.
Live conversion
Output updates as you type or paste. No Convert button needed.
Private by design
Runs locally in your browser — nothing is ever uploaded.
What a Base64 converter is for
Base64 lets binary or non-ASCII data travel safely through text-only channels — JSON payloads, HTTP headers, email MIME parts, data URLs, and config files. Converting to Base64 makes the data transport-safe; converting back restores the original bytes exactly.
Need a specific direction? Use Base64 Encode, Base64 Decode, or Base64 to Text.
Frequently asked questions
›What is a Base64 converter?
A Base64 converter transforms data between plain text (or binary files) and the Base64 alphabet. Encoding turns bytes into 64 safe ASCII characters; decoding reverses it back to the original bytes.
›Can I convert both directions?
Yes. Switch between Encode and Decode with one click — the converter runs live as you type, so you see the result immediately in either direction.
›Does it handle Unicode and emoji?
Yes. Text is converted through UTF-8 before Base64 encoding, so accented characters, CJK text, and emoji all round-trip exactly.
›Can I convert files as well as text?
Yes — use the dedicated converters for images, PDFs, and hex. Each one handles the file type's MIME detection and download for you.
›Is my data sent to a server?
No. The converter runs entirely in your browser using the native btoa and atob APIs. Nothing is uploaded, logged, or stored.
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