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ROT13 Converter

Apply the reversible ROT13 substitution to ASCII letters. Up to 100,000 characters.

Free to useNo sign-upRuns in your browser
Enter your details

Enter the inputs, then select Apply ROT13.

Up to 100,000 characters; processed in this browser.

Your result
Enter your details

Result will appear here

How ROT13 Converter works

Apply the reversible ROT13 substitution to ASCII letters.

Up to 100,000 characters. Other characters are unchanged. ROT13 is a letter substitution, not secure encryption.

Concept diagram for ROT13 Converter, showing text input and the supported output.
Concept diagram; the three operation images are actual browser captures.

How to use ROT13 Converter

Follow the labelled inputs.

Enter text

Replace the example with text. The field labels specify the expected format and units.

Apply ROT13
Input and settings
ROT13 Converter: input and settings in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Check the remaining inputs

This tool uses one input. Check the supported range before running it. Up to 100,000 characters.

Apply ROT13
Tool result
ROT13 Converter: tool result in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Run, review and save

Select Apply ROT13. Review the displayed text, then copy it or download the result text.

Apply ROT13
Review the details
ROT13 Converter: review the details in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Examples and uses for ROT13 Converter

Check the supplied example

The starting example produces Uryyb Jbeyq. Apply the reversible ROT13 substitution to ASCII letters.

Apply ROT13
Developer input and configuration represented by document cards.
Prepare the input. Concept illustration.

Use your own inputs

Read the labels for text. Up to 100,000 characters.

Apply ROT13
A developer example flowing from input to reviewed output.
Inspect an example. Concept illustration.

Record a reviewed result

Copy the displayed text into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.

Apply ROT13
Developer output handed to the next stage of a workflow.
Use the result in your workflow. Concept illustration.

How to read the result

Read the units and assumptions with the output.

Apply the reversible ROT13 substitution to ASCII letters.

Up to 100,000 characters. Other characters are unchanged. ROT13 is a letter substitution, not secure encryption.

Apply ROT13Apply ROT13
A developer result reviewed alongside its source.
Review the returned output. Concept illustration.

Supported input and limits

Check the stated scope before you run it.

Up to 100,000 characters. Other characters are unchanged. ROT13 is a letter substitution, not secure encryption.

The input stays in this browser. Copy result and Download save the same displayed text.

Apply ROT13Apply ROT13
Input format and assumptions reviewed for a developer task.
Check format and assumptions. Concept illustration.

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ROT13 Converter: common questions

Answers about using ROT13 Converter and understanding its results.

What inputs and assumptions apply?

Up to 100,000 characters. Other characters are unchanged. ROT13 is a letter substitution, not secure encryption.

How can I save the result?

Copy result copies the displayed text. Download saves the same text as a TXT file. Processing runs in this browser without an account.

Apply ROT13 with your input

Check the displayed text, then copy or download it.

Apply ROT13