Developer Tools
Learn when to use AES Encrypt, how to use it correctly, and how to avoid common mistakes.
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.
This guide explains when to use AES Encrypt, how to get a cleaner result, and which mistakes to avoid before moving on to related tools or the main tool page.
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.
Ready to run AES Encrypt? Open the main tool page to enter your input, generate the result, and copy or download the output.