Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable UTF-8 in your browser. Copy the result and remember that Base64 is encoding, not encryption.
What this tool solves
Encode and decode Base64 text locally, inspect output size, copy or download results, and remember that Base64 is not encryption.
Input: plain text to encode or Base64 text to decode.
Output: Base64 text or decoded UTF-8 text.
How to use it
- Choose encode when starting from readable text, or decode when starting from Base64.
- Paste the input and run the conversion; check whether the result is text or binary data represented as text.
- Copy the result only after verifying character encoding and padding where another system expects a specific variant.
Common use cases
- Inspect API and development payloads
- Encode small text values for transport or testing
- Decode Base64 strings found in logs or configuration
Privacy, accuracy and limits
Base64 provides no confidentiality and usually increases data size by roughly one third. URL-safe Base64 may use different characters and padding rules.
WebToolMint keeps this workflow local in the browser where the feature allows it. Network-dependent tools are labelled separately. Keep originals and independently verify results that affect legal, financial, medical or business decisions.
Frequently asked questions
Is Base64 encryption?
No. Anyone can decode Base64; it is a reversible encoding for representing bytes as text.
Why does Base64 end with = signs?
Padding characters can be used so the encoded length aligns with Base64’s 4-character groups.
Why is decoded text garbled?
The original bytes may not be UTF-8 text, or the string may use a different Base64 variant or be incomplete.