Secret Message Coder & Decoder

Turn a message into a secret code and back again. Pick a method, choose encode or decode, and the result appears instantly. Everything runs in your browser.

Message

Method

Caesar shift

Result

—

For fun and learning only, not secure encryption. Runs in your browser.

✉ Email me this result

</> Embed this calculator

Paste this into any website or blog post. It is free — the small "powered by" link must stay visible.

<iframe src="https://calculatorspoint.net/embed/secret-message-coder/" style="width:100%;max-width:640px;height:560px;border:1px solid #e3e8ef;border-radius:12px;" loading="lazy" title="Secret Message Coder &amp; Decoder"></iframe>

How it works

Base64, Caesar shift, ROT13, Atbash, Morse and binary encodings.

Frequently Asked Questions

Is this real encryption?

No. These are classic ciphers and encodings for fun and learning, not secure encryption. Do not use them to protect sensitive data.

Does my message get sent anywhere?

No. Everything is encoded and decoded in your browser. Nothing is uploaded or stored.