Base64 to Text

Decode Base64 strings back to readable text safely. This Base64 to Text decoder converts Base64-encoded strings back to readable text using standard Base64 decoding.

Free, instant, and private — everything runs right in your browser.

Base64 input

12 chars1 words

Decoded textLive preview

encode me

Ctrl+Enter to copy | Ctrl+Z to undo

Example usage

Example input

ZW5jb2RlIG1l

Example output

encode me

Batch Processing

Enter multiple inputs, one per line. Each line will be processed separately.

Input (one per line)

Results

Why this tool?

Everything runs right in your browser — no uploads, no sign-up, no waiting. Your text never leaves your device.

Quick tips

•Outputs update live as you type.
•Use the sticky copy button to grab results quickly.
•Bookmark this page for fast access.

How it works

Paste a Base64-encoded string.
The string is decoded from Base64 to bytes.
Bytes are converted to UTF-8 text.

Use cases

Decode Base64-encoded data.

Convert Base64 URLs back to text.

Debug Base64 encoding issues.

Spotting Base64 in the wild

Base64 has a recognizable signature: a long run of mixed-case letters and digits with occasional + and / characters, often ending in one or two equals signs. That padding is informative — a single = means the original data ended two bytes into a three-byte group, == means one byte. No padding means the length divided evenly by three.

The 4:3 ratio explains the other giveaway: Base64 output is always about 33% longer than the data it encodes. If a string looks like random characters but is suspiciously long and its length is a multiple of four, decoding it as Base64 is a good first guess.

Everyday decoding jobs

JWTs are probably the most common: a token is three Base64 sections joined by dots, and the first two decode straight to readable JSON showing the algorithm and the claims. Decoding them is routine debugging — and a good reminder that a JWT payload is not secret, merely signed. Email headers, data URIs in CSS, API keys in config files, and cookie values are all frequently Base64.

Two practical notes. URL-safe Base64 swaps + and / for - and _ so it survives in a URL; if a string looks like Base64 but fails to decode, that variant is a likely reason. And decoding is not decryption — Base64 hides nothing from anyone who bothers to look, which is why finding a Base64-encoded password in a config file is a security problem, not a security measure.

Encoding