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Free Text Encrypter

Encrypt text with AES-256 or generate SHA-256 and MD5 hashes — entirely in your browser.

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Encrypt / Hash Text

AES-256 Encrypt
SHA-256 Hash
MD5 Hash
Base64 Encode
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Keep your key safe — you will need it to decrypt.

What is the Text Encrypter?

The Text Encrypter is a free, browser-based security tool that lets you encrypt text using AES-256-GCM (military-grade symmetric encryption), generate one-way cryptographic hashes with SHA-256 or MD5, or encode text in Base64. All operations run entirely in your browser using the Web Crypto API — your data is never transmitted to any server.

How to Use the Text Encrypter

  1. Choose an encryption mode:
    • AES-256-GCM — encrypts text with a secret key; only someone with the key can decrypt it.
    • SHA-256 / MD5 — generates a one-way hash (cannot be reversed). Used for data verification.
    • Base64 — encodes text in Base64 format (not encryption — use for encoding, not security).
  2. Enter your text — paste the message, password, or data you want to process.
  3. Enter a secret key (AES mode only) — choose a strong, memorable key. Keep it safe — you'll need it to decrypt.
  4. Click Encrypt — the result appears instantly. Copy the ciphertext.

Use Cases

Secure Message Sharing

Encrypt sensitive messages before sending over email or messaging apps — only recipients with the key can read them.

Password & Note Storage

Encrypt sensitive notes, passwords, or API keys before storing them in shared documents or note-taking apps.

Data Integrity Verification

Generate SHA-256 hashes to verify that a file or piece of data has not been tampered with.

Base64 Encoding

Encode binary data or special characters as Base64 for safe transmission in URLs, headers, or config files.

Frequently Asked Questions

Is my data safe — does it leave my device?

No. All encryption, hashing, and encoding is performed entirely in your browser using the Web Crypto API. Your input text and keys are never sent to any server.

What is AES-256-GCM?

AES-256-GCM (Advanced Encryption Standard, 256-bit key, Galois/Counter Mode) is one of the strongest symmetric encryption algorithms available. It is used by governments, militaries, and financial institutions worldwide. "GCM" mode also includes data authentication to detect tampering.

What is the difference between encryption and hashing?

Encryption is two-way — encrypted text can be decrypted with the correct key. Hashing (SHA-256, MD5) is one-way — it produces a fixed fingerprint of the data that cannot be reversed. Use encryption for data you need to read again; use hashing for verification.

Is the Text Encrypter free?

Completely free with no account required. Encrypt and hash as much text as you need.

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