Developer Tools
Encrypt text with AES instantly using a passphrase-based browser tool.
Use this AES Encrypt tool to encrypt plain text with AES and return Base64 ciphertext. It is useful for demos, browser-side encryption tests, reversible development workflows, and understanding how passphrase-based AES transforms readable input into encrypted output.
Use this AES Encrypt tool to encrypt plain text with AES and return Base64 ciphertext. It is useful for demos, browser-side encryption tests, reversible development workflows, and understanding how passphrase-based AES transforms readable input into encrypted output.
Use aes encrypt when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
secret123 hello world
Output
Base64 encrypted text
The first line is the passphrase and the lines below are the plaintext.
Input
demo-key
{"name":"John","role":"admin"} Output
Base64 encrypted text
Useful for testing how structured text looks after AES encryption.
Fix: Put the passphrase on the first line and the plaintext below it.
Fix: You must use the exact same passphrase to decrypt the ciphertext.
Fix: Always put the passphrase first and the plaintext below it.
Fix: This tool returns Base64 ciphertext for easier copy and reuse.
Fix: This page is a simple passphrase-based AES tool, not an advanced crypto console.
It encrypts plain text with AES and returns Base64 ciphertext.
Put the passphrase on the first line and the plaintext below it.
It returns Base64 ciphertext.
Yes, with the same passphrase using AES Decrypt.
The reverse tool is AES Decrypt.