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RC4 Encrypt and Decrypt

Encrypt and decrypt text with the RC4 stream cipher. Paste your input, choose an option and copy the result. It runs in your browser, so your text is never uploaded.

Input0 characters, 0 words
Result
What RC4 Encrypt and Decrypt does
Encrypt and decrypt text with the RC4 stream cipher. Type or paste your text, run the tool and the hash or encrypted result appears in the Result box.
RC4 Encrypt and Decrypt offers 2 modes: Encrypt, Decrypt.
How to use RC4 Encrypt and Decrypt
  1. Paste or type your text into the Input box.
  2. Choose a mode: Encrypt, Decrypt.
  3. The result appears instantly in the Result box.
  4. Click Copy, or Use as input to keep working with it.
About RC4 Encrypt and Decrypt
Hashes and ciphers are used everywhere, from verifying a download to storing a password. Testing one usually means installing a library or writing a short script.
This tool gives you the result straight away in your browser. It covers legacy and modern algorithms, which makes it useful for both debugging old systems and learning.
RC4 Encrypt and Decrypt FAQ
What is RC4 Encrypt and Decrypt?
RC4 Encrypt and Decrypt is a free online tool. Encrypt and decrypt text with the RC4 stream cipher. Type or paste your text, run the tool and the hash or encrypted result appears in the Result box.
How do I use RC4 Encrypt and Decrypt?
Paste or type your text into the Input box. Choose a mode: Encrypt, Decrypt. The result appears instantly in the Result box. Click Copy, or Use as input to keep working with it.
Is RC4 Encrypt and Decrypt free to use?
Yes. It is completely free, with no usage limits, watermarks or paid tiers.
Do I need to sign up or install anything?
No. Open the page and start using it. There is no account, download or browser extension.
Is my data safe when I use RC4 Encrypt and Decrypt?
Yes. Hashing and encryption run in your browser, so your text and passphrase are never uploaded. Still, avoid pasting real production secrets on a shared computer.
What options does RC4 Encrypt and Decrypt include?
RC4 Encrypt and Decrypt offers 2 modes: Encrypt, Decrypt. You can also set: passphrase.
Does RC4 Encrypt and Decrypt work on my phone or tablet?
Yes. The layout adapts to any screen size, and the tool works in mobile browsers on iOS and Android.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. JavaScript must be enabled.
Can I use the output of RC4 Encrypt and Decrypt commercially?
Yes. The result is yours to use in personal and commercial projects without attribution.
Is there a limit on how much I can enter?
There is no fixed limit. Very large inputs depend on your device's memory and may feel slower on older phones.
How do I copy the result?
Click the Copy button above the Result box. For tools that transform text, Use as input moves the result back to the input so you can apply another change.
Can I use RC4 Encrypt and Decrypt offline?
After the page has loaded, yes. Processing happens in your browser, so the tool keeps working even if your connection drops.
Why do I see an error or an empty result?
A message appears when the input is not valid for the tool, for example a wrong passphrase when decrypting, or a hash that does not come from this tool.
How reliable are the results from RC4 Encrypt and Decrypt?
Hash functions are computed exactly, so the same text always gives the same result. Ciphers here use a passphrase based mode intended for quick tasks and learning, not for protecting highly sensitive data.
Can RC4 Encrypt and Decrypt handle many items at once?
Yes. Paste as much as you need and the whole input is processed in one go.
Where is RC4 Encrypt and Decrypt useful in real work?
Verifying downloads and file integrity; Checking how a password is stored by a database; Learning how common hashes and ciphers work; Quickly encrypting a short note for sharing.
Which tools are related to RC4 Encrypt and Decrypt?
You may also like MD5 Hash Generator, MD4 Hash Generator, SHA-224 Hash Generator, SHA-384 Hash Generator. All of them are free and work in the same way.
Is a hash the same as encryption?
No. A hash is a one-way fingerprint that cannot be reversed. Encryption can be reversed with the right key.
Are MD5 and SHA-1 safe for passwords?
No. They are fast and long broken for security uses. Use bcrypt, scrypt or Argon2 for passwords, and a modern hash such as SHA-256 for integrity checks.
Why can I not decrypt my text?
The passphrase must match exactly, including case, and the encrypted text must be complete.
How can I report a problem or suggest a tool?
Use the contact link in the footer. Bug reports and tool ideas are welcome, and popular requests are added regularly.
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