Base64 Encode
Encode text or files into Base64 — runs locally in your browser.
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Base64 is a way to represent binary data using a 64-character alphabet that survives transports designed for ASCII (HTTP headers, JSON strings, environment variables). Converterzilla's encoder accepts any UTF-8 text and emits standard Base64. Everything runs in the browser; nothing is uploaded or logged.
How to use Base64 Encoder in your browser
- Paste text. Type or paste the content you want encoded.
- Read the encoded result. The right panel updates live as you type.
- Copy. Click Copy to put the Base64 on your clipboard.
Why use Converterzilla for Base64 Encoder
UTF-8 safe
Multi-byte characters (emoji, Chinese, Arabic) encode correctly — we don't drop bytes.
Standards-compliant
Standard alphabet with '=' padding, ready for any consumer.
Local execution
No upload — useful when encoding secrets or sensitive payloads.
Frequently asked questions about Base64 Encoder
Standard Base64 uses '+' and '/', which need URL-escaping. For URL-safe Base64 ('-' and '_'), use the URL Encode tool after Base64.
This tool focuses on text. For files, paste the file content (small files) or use the API for large files (Sprint 4 roadmap).
That's padding — Base64 encodes 3 bytes into 4 characters; when the input length isn't a multiple of 3, one or two '=' pad the end.