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🔤 Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back, with safe UTF-8 handling for any language.
About this Base64 Encoder & Decoder
Base64 turns binary or non-ASCII data into plain text made of letters, digits, plus, slash and equals signs, so it can travel safely through email, URLs and JSON. This tool encodes and decodes with proper UTF-8 handling, so accented letters, Urdu, emoji and other scripts survive the round trip intact.
How to use it
- Paste or type your text into the box.
- Click Encode to turn it into Base64, or paste Base64 and click Decode to get the original back.
- Use Swap to flip between the current text and the previous one.
- Copy the result from the box.
Example
Encoding the word hello gives aGVsbG8= — and decoding aGVsbG8= gives hello right back.
Frequently asked questions
Why does Base64 text get longer?
Every 3 bytes of input become 4 Base64 characters, so output is about 33% larger. That overhead is the price of text-safe transport.
Is Base64 encryption?
No. Anyone can decode Base64 instantly; it is an encoding for transport, not a way to hide or protect data.
Why did my decode fail?
The input was probably not complete Base64 — a missing character or stray symbol breaks it. This tool reports the error instead of guessing.
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