Base64 Encoder & Decoder
The SolversPro Base64 Encoder & Decoder is a free browser-based developer utility that converts plain text or binary data into Base64 format and decodes Base64 strings client-side with zero server uploads.
Text to Encode
Base64 String
Base64 Character Encoding Specifications (RFC 4648)
6-bit radix-64 representation mapping 64 printable ASCII characters for safe binary transport.
| Binary Range (6-Bit) | Decimal Index | Base64 Character Set | Encoding Purpose & Behavior |
|---|---|---|---|
| 000000 – 011001 | 0 – 25 | A – Z | Uppercase English alphabet representations |
| 011010 – 110011 | 26 – 51 | a – z | Lowercase English alphabet representations |
| 110100 – 111101 | 52 – 61 | 0 – 9 | Numeric digits 0 through 9 |
| 111110 & 111111 | 62 & 63 | + and / | Standard Base64 symbols (replaced with - and _ in URL-safe Base64) |
| Pad Indicator | N/A | = | Trailing padding applied when input byte count is not divisible by 3 |
Frequently Asked Questions
What is Base64 encoding used for?
Base64 is used to encode binary data into a text-based format. Developers commonly use it to embed images in CSS/HTML or to pass data safely in URLs and JSON payloads.
Is this Base64 converter secure?
Yes! All encoding and decoding operations happen locally via your browser's native JavaScript APIs. We never send your text or data over the network.
Does this tool support UTF-8 characters?
Yes, our converter automatically handles UTF-8 encoding so you can safely convert text containing emojis and special characters to Base64.
Share & Embed
Paste this snippet into your blog, school portal, or website to embed the live Base64 Encoder & Decoder:
<iframe src="https://solverspro.com/developer/base64-converter/?embed=1" width="100%" height="620" style="border:1px solid #27272a;border-radius:12px;background:#0a0a0f;" loading="lazy" title="Base64 Encoder & Decoder — SolversPro"></iframe> <p style="font-size:12px;margin-top:6px;font-family:sans-serif;">Powered by <a href="https://solverspro.com/developer/base64-converter/" target="_blank" rel="noopener">Base64 Encoder & Decoder — SolversPro</a></p>
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