Caesar Cipher Decoder (online Tool) - Boxentriq

Caesar Cipher Tool

You must enter the message.

Remove Spaces Letters Only Reverse UPPER lower 5-groups Undo

Copy Paste Text Options...

🔑 You must enter the encryption key. 🌎 English French German Italian Portugese Spanish Swedish Custom... Alphabet

Decode Encode Auto Solve (without key) Cancel Instructions

Auto Solve Options

Max Results Spacing Mode Automatic No Spacing Rearrange Keep Existing Substitute

Instructions

You can decode (decrypt) or encode (encrypt) your message with your key. If you don't have any key, you can try to auto solve (break) your cipher.

Settings

• Language: The language determines the letters and statistics used for decoding, encoding and auto solving.
• Max Results: This is the maximum number of results you will get from auto solving.
• Spacing Mode: This is about the spaces (word breaks) in the text. In most cases it should be set to Automatic. In case a specific letter (for instance X) is used as word separator, set it to Substitute.

Results

Remove Spaces Letters Only Reverse UPPER lower 5-groups Undo

Copy Text Options...

Not seeing the correct result? Try Auto Solve or use the Cipher Identifier Tool.

Auto Solve results

Score	Key	Text

Still not seeing the correct result? Then try experimenting with the Auto Solve settings or use the Cipher Identifier Tool.

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