RapidCheck

Base64 Encode / Decode

Encode text to Base64 and decode it back — in your browser.

Last updated: 25 Aug 2026

Quick answer

Base64 encodes binary or text data into an ASCII string using 64 characters. Paste text and click Encode to get Base64, or paste Base64 and click Decode to recover the text. It runs entirely in your browser (Unicode-safe).

Encode text to Base64 or decode Base64 back to text. Everything runs locally in your browser and supports Unicode.

How to encode or decode Base64

  1. 1 Paste your text or Base64 string.
  2. 2 Click Encode or Decode.
  3. 3 Copy the result.

Frequently asked questions

What is Base64?
An encoding that represents binary/text data as an ASCII string using 64 characters — common in data URLs and APIs.
Is Base64 encryption?
No — it is encoding, not encryption; anyone can decode it. Do not use it to protect secrets.
Is my data uploaded?
No — encoding and decoding happen entirely in your browser.

Related checkers

URL Encode / Decode JSON Formatter MD5 Hash Generator