Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text. The encoder writes UTF-8 bytes first, so accented characters and emoji survive the round trip.
Good to know
- Standard Base64 with padding. URL-safe Base64 is available from the JWT tool for tokens.
Common questions
Is Base64 encryption?
No. It is a reversible encoding. Anyone can decode it, so never use it to protect a secret.
Why do emoji and accents survive decoding?
Text is encoded as UTF-8 bytes before Base64, and decoded back as UTF-8, so non-ASCII characters round-trip correctly.
Does it support files?
This version handles text only. Binary files would need a file encoder, which is not part of this page.
Is this tool really free?
Yes. There is no account, no paywall and no usage limit. Tools App is funded by aumenso, the studio behind it.
Is anything I enter uploaded?
No. The tool runs in your browser tab; what you enter is never sent to us and never stored.
Need this built for your business?
aumenso builds websites, branding, SEO, GoHighLevel funnels and custom software for agencies and businesses across North America and Europe. These tools are the same team's work, given away free.