Text to Base64

Encode text into Base64 safely. This Text to Base64 converter transforms plain text into Base64-encoded strings using UTF-8 encoding for secure data transmission.

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

Text input

9 chars2 words

Base64 outputLive preview

ZW5jb2RlIG1l

Ctrl+Enter to copy | Ctrl+Z to undo

Example usage

Example input

encode me

Example output

ZW5jb2RlIG1l

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

Text is encoded in UTF-8 then Base64.
Padding is handled automatically.
Copy-ready output appears instantly.

Use cases

Share text safely in URLs.

Encode credentials for testing.

Send data between systems.

Why Base64 exists (and why it is not encryption)

Base64 solves a transport problem: many old systems — email being the classic — only reliably carried printable ASCII characters. Base64 re-expresses any bytes using 64 safe characters (A–Z, a–z, 0–9, + and /), three input bytes becoming four output characters, which is the source of its 33% size increase and its trailing = padding. Email attachments still travel as Base64 today, as do inline images in CSS and the payload sections of JWTs.

Crucially, Base64 is encoding, not encryption — anyone can reverse it instantly, with zero keys. Treating Base64 as security is a classic beginner mistake; it hides text from casual glances only.

Recognizing and working with Base64

Base64 has a distinctive look: long runs of mixed-case letters and digits, occasionally + and /, often ending in = or ==. The padding tells you the original length modulo 3 (== means one final byte, = means two). When debugging APIs, decode suspect strings — configuration secrets, cookie values, JWT segments — with our Base64 to Text tool; JWTs in particular are just three Base64 sections joined by dots, and the first two decode straight to readable JSON.

Encoding