How to Use AES Encrypt

What is AES Encrypt?

The AES Encrypt tool encrypts plaintext using the AES (Advanced Encryption Standard) block cipher in CBC (Cipher Block Chaining) or GCM (Galois/Counter Mode) with 128-, 192-, or 256-bit key sizes. AES is the global standard for symmetric encryption, underpinning TLS/SSL, WPA2/WPA3 Wi-Fi security, disk encryption (BitLocker, FileVault), and VPN protocols. This tool uses the browser's native Web Crypto API for encryption, so your plaintext and keys never leave your device — no server, no logs.

Features

How do I use AES Encrypt?

Enter the plaintext you want to encrypt, provide an encryption key or passphrase, then select the AES mode (CBC or GCM) and key size (128, 192, or 256 bits). Click Encrypt to generate the ciphertext alongside the automatically generated IV/nonce. Output is available in Base64 or hex format, ready to copy or use directly in your application.

Why use AES Encrypt?

AES Encrypt is a free tool for fast everyday work with no signup required for basic use. It helps you get instant results, review them, and move on without installing a separate app.

• 100% free with no usage limits, watermarks, or hidden upgrade prompts.
• Privacy-conscious workflow tips are built into the docs: avoid secrets, use samples, and review outputs.
• No account, email, or signup is required to start using it.
• Works instantly on desktop, tablet, and mobile — nothing to install.

What can I use AES Encrypt for?

• Encrypting sensitive API secrets and credentials before storing them in version control or configuration management systems
• Generating AES-256-GCM encrypted test vectors for validating encryption implementations in different programming languages
• Encrypting personally identifiable information (PII) in JSON payloads before transmitting over insecure channels
• Creating encrypted payloads for testing AES decryption endpoints in security assessments and API testing
• Learning and comparing AES-CBC vs AES-GCM behavior — including authentication tag generation — in a hands-on environment

Who uses AES Encrypt?

Developers, designers, students, and everyday users rely on this tool for quick, accurate results. It's especially popular among people who need a reliable utility without installing software or signing up for an account.