Base64 decoder

Decode Base64 data without guessing

Use this Base64 decoder to turn an encoded text block back into its readable representation. It helps with API payloads, email fragments, configuration values, and small data samples where you need to inspect the original text quickly.

When this tool helps

  • Inspect a Base64 value copied from JSON or an HTTP response.
  • Recover readable text from an encoded token that is not encrypted.
  • Verify that an encoder produced the expected source value.

How to get a reliable result

  1. Paste only the Base64 payload, including any required padding characters.
  2. Remove surrounding quotes or prefixes that are not part of the payload.
  3. Decode and compare the output with the expected character encoding.

Practical example

The Base64 value SGVsbG8= decodes to Hello. The trailing equals sign is padding and can be significant for strict decoders.

Important note

Base64 is an encoding, not encryption. Do not paste passwords, private keys, access tokens, medical data, or other confidential material into an online form.