Base64 Decode
Decode Base64 text back to UTF-8. Type or paste below — the result updates as you type.
Input
Convert to
Output
Private by design
This conversion runs entirely in your browser. Your text is not sent to a server.
Tip
Base64 is encoding, not encryption. Anyone can decode it. Use it for transport, data URLs, and tokens — not to hide secrets.
How to convert with Base64 Decode
Paste or type text in the input box.
Watch the Base64 result update instantly — nothing is uploaded.
Use Convert to to switch between Encode and Decode. Your input is kept.
Copy the result, or use it as the next input.
When should you use it?
Transport
Turn text into ASCII that survives email, JSON, and copy-paste.
Data URLs
Embed small payloads in CSS, HTML, or markdown without a separate file.
Tokens
Inspect or build Base64 segments used in JWTs and API credentials.
Not encryption
Do not treat Base64 as a way to hide passwords or API keys.
Your text stays private.
Base64 encoding and decoding run entirely in your browser. Text and tokens are never uploaded.
About Base64 in the browser
Base64 maps bytes to an ASCII alphabet so binary can travel through systems that expect text. Toolora encodes UTF-8 text. hello becomes aGVsbG8=. Decode reverses it. Padding with = matters; truncated input fails. This is not encryption — anyone can decode. Do not hide passwords in Base64.
Worked example: a small JSON object encodes to a single line you can paste into a data URL or a config. International characters need UTF-8; Latin-1 mistakes show as garbage on decode.
Image Base64 is a sibling when the input is a file. JWT Decoder is Base64URL, a related alphabet with URL-safe characters. Related: URL Encode, Hex Encode, Hash Generator. Nothing is uploaded. Convert to keeps input between encode and decode.
Related encoding tools
Base64 Encode
Encode text to Base64 (UTF-8 safe). Type or paste below — the result updates as you type.
Hex Encode / Decode
Convert text to hexadecimal bytes, or hex back to UTF-8. Type or paste below — the result updates as you type.
Image ↔ Base64
Convert an image file to a Base64 data URI, or preview Base64 as an image, in this browser. The result updates as soon as the file is read — nothing is uploaded.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, or SHA-512 hashes using various encodings. Hashing is commonly used to verify integrity and fingerprint data.
URL Encode
Percent-encode text for use in URLs. Type or paste below — the result updates as you type.
Base64 Decode examples
ASCII
Brand name
Unicode
Encode vs decode
Base64 Decode FAQ
Paste a Base64 string into the Base64 Decode tool. The UTF-8 text updates as you type when the input is valid.
The input may include invalid characters, broken padding, or truncated data. Remove unexpected spaces or repair the string, then try again.