Encrypt Text with AES-256 Online
Protect sensitive text with AES-256-GCM encryption. Enter a password to encrypt your message into Base64 ciphertext, or decrypt existing ciphertext back to plaintext. Everything runs locally.
AES Encryption Tool
Encrypt and decrypt text using AES-256 encryption
GCM provides authenticated encryption - it detects if the ciphertext has been tampered with. Recommended for most use cases.
Press Ctrl + Enter to encrypt.
Quick Start
- 1Enter the text you want to encrypt
- 2Set a strong password for the encryption key
- 3Click Encrypt to generate the ciphertext
- 4Copy the Base64-encoded encrypted output
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Looking for FAQs and advanced options? Visit the full AES Encryption Tool page →