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Base64 Encoder/Decoder

Encode/decode Base64

How to use Base64 Encoder/Decoder

  1. Paste text or a Base64 string.
  2. Switch between Encode and Decode mode.
  3. Copy the result — useful for embedding binary-safe data in text formats like JSON or URLs.

About this tool

Base64 Encoder/Decoder is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.

Category: Encoding & Conversion. Browse more Encoding & Conversion tools.