Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain UTF-8 text.
About Base64
Encodes any UTF-8 text to a printable ASCII representation. Commonly used in data URLs, email attachments and JSON Web Tokens. Uses the browser's built-in btoa / atob with proper UTF-8 handling.
Frequently Asked Questions
Is the Base64 Encoder / Decoder free to use?
Yes, the Base64 Encoder / Decoder is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.
Is my data safe when using the Base64 Encoder / Decoder?
Absolutely. All calculations performed by the Base64 Encoder / Decoder happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.
How accurate is the Base64 Encoder / Decoder?
Our Base64 Encoder / Decoder uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.
Can I use the Base64 Encoder / Decoder on my mobile phone?
Yes! The Base64 Encoder / Decoder is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.