Base64 Text Encoder

Encode plain text strings into Base64 ASCII representations with full Unicode and UTF-8 support.

How It Works & Processing Standards

Encode plain text strings into Base64 ASCII representations with full Unicode and UTF-8 support.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 2,000,000 characters

Base64 Text Encoder is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Base64 Text Encoder

  1. 1
    Enter TextType or paste plain text.
  2. 2
    EncodeBase64 string generates instantly.
  3. 3
    Copy Base64Copy the encoded string.

Common Use Cases

  • Preparing authorization header values or data transmission tokens
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