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Base64 Encoder & Decoder – Free Online Tool
Use this free Base64 encoder and decoder to convert text to Base64 and Base64 to text in one click. It is fast, UTF-8 safe, and runs fully in your browser, so your data stays private.
What Is Base64?
Base64 is a way to write data using only 64 safe characters: A–Z, a–z, 0–9, + and /. Sometimes you will also see = at the end, which is called padding.
Many systems cannot handle special characters or binary data safely. Base64 turns that data into plain text so it can travel without breaking.
Example:
- Normal text:
Hello World - Base64:
SGVsbG8gV29ybGQ=
How to Encode and Decode Base64 Online
To encode text to Base64:
- Paste or type your text in the input box.
- Select Encode.
- Copy the Base64 result.
To decode Base64 to text:
- Paste your Base64 string in the input box.
- Select Decode.
- Copy the original text.
No sign-up and no installation needed. If you want to check how long your text is before encoding, try our Word Counter.
Why Use Our Base64 Tool?
- Free forever: No limits and no hidden charges.
- UTF-8 safe: Works with Urdu, Hindi, Arabic, English, symbols, and emojis.
- 100% private: Everything runs in your browser. Nothing is uploaded.
- Instant results: No waiting and no page reload.
- Works on all devices: Mobile, tablet, and desktop.
Common Uses of Base64
- Sending data inside URLs, JSON, or XML
- Embedding small images in HTML or CSS using data URIs. Keep the file small first with our Image Compressor, because Base64 makes files bigger.
- Email attachments (MIME)
- Reading API keys, tokens, and Basic Auth headers
- Testing and debugging in web development
Preparing images for your website? You can also use our AI Image Editor to edit them before encoding. For more tips and guides, visit our blog.
Frequently Asked Questions (FAQ)
What is a Base64 encoder?
A Base64 encoder changes normal text into a Base64 string made of safe, readable characters.
What is a Base64 decoder?
A Base64 decoder changes a Base64 string back into the original text.
Is this Base64 tool free?
Yes. It is completely free, and you do not need an account.
Is my data safe?
Yes. The tool runs entirely in your browser. Nothing you enter is uploaded or stored on our servers.
Is Base64 the same as encryption?
No. Base64 is only an encoding method. Anyone can decode it easily, so never use it to protect passwords or private data.
Does it support Urdu, Hindi, Arabic, or emojis?
Yes. The tool is UTF-8 safe, so it works with all languages and emojis.
Why does my Base64 string end with = or ==?
The “=” sign is padding. It keeps the length of the Base64 string correct. This is normal.
Why do I get an error when decoding?
Usually the text is not valid Base64. Check for missing characters, extra spaces, or broken line breaks, then try again.
Why is the Base64 output longer than my original text?
Base64 makes data about 33% larger. This is a normal result of how it works.
Can I use this tool on my phone?
Yes. It works on all modern browsers on mobile and desktop.
Final Words
Need to encode or decode Base64 quickly? Paste your text, click a button, and you are done. Bookmark this page for next time, and explore more free tools on MeraTool.