Base64 Encoder & Decoder
Encode text to Base64 or decode it back — UTF-8 safe, nothing leaves your browser.
Base64 is an encoding, not encryption — anyone can decode it. Never use it to protect passwords or secrets.
How to use the Base64 Encoder & Decoder
- Type or paste your text (to encode) or Base64 (to decode).
- Click Encode or Decode — tick URL-safe for web addresses and tokens.
- Copy the result with one tap.
Base64 Encoder & Decoder FAQs
What is Base64 encoding?
Base64 turns any text (or binary data) into a plain ASCII string using only letters, digits, + and /. It is used to safely carry data through systems that only handle plain text, such as email headers, URLs and data fields. It is an encoding, not encryption — anyone can decode it.
Can this Base64 tool handle emojis and non-English text?
Yes. It encodes text as UTF-8 first, so Arabic, Urdu, Chinese characters and emojis round-trip correctly — unlike older tools that corrupt anything beyond plain English letters.
What is URL-safe Base64?
Standard Base64 uses + and /, which have special meanings in web addresses. URL-safe Base64 swaps them for - and _ and drops the = padding, so the output can sit directly in a URL or token without breaking it.
Why does decoding show an error?
Usually the input is not valid Base64: it may contain spaces, line breaks in the wrong place, or characters outside the Base64 alphabet. Remove stray characters and try again; the tool also accepts unpadded input.
Is Base64 secure for passwords?
No. Base64 is not encryption — it only changes how data looks. Never treat a Base64 string as protected; anyone can decode it in seconds.
Free Base64 Encoder & Decoder — Encode and Decode Online
This free Base64 encoder and decoder converts text to Base64 and Base64 back to readable text in one click. It handles UTF-8 correctly, so emojis and non-English scripts survive the round trip, and a URL-safe mode covers tokens and links.
How to use it, step by step
- Paste your text or Base64 string into the input box.
- Choose Encode or Decode, and tick URL-safe if the output goes into a web address.
- Copy the result and paste it wherever you need it.
Popular uses
- Developers: encode tokens, keys and data URIs for testing.
- Email and APIs: prepare data that must travel as plain text.
- Debugging: decode a Base64 string to see what it actually contains.
- Learning: see exactly how Base64 encoding works, character by character.