What is the difference between 7-bit and 8-bit mode?

7-bit mode outputs each character as a 7-digit binary string (0–127, covering standard ASCII). 8-bit mode pads each character to 8 digits, which is more common in computing since bytes are 8 bits.

Can I encode numbers?

Yes. If you enter digits like "65", each digit character is encoded according to its ASCII value. The digit "6" = 54 in ASCII, and "5" = 53 in ASCII. To convert a decimal number directly to binary, type it in the number tab.

Is this tool sending my data anywhere?

No. All conversion happens entirely in your browser using JavaScript. Nothing is sent to any server.

What characters are supported?

In 7-bit mode, characters with code points 0–127 (standard ASCII) are supported. In 8-bit mode, characters 0–255 are supported. Characters outside this range will show the Unicode code point modulo 256.

How do I convert binary back to text?

This tool focuses on text-to-binary conversion. To decode binary back to text, look for a Binary Decoder tool that accepts binary strings as input.

Binary Encoder

Name: Binary Encoder
Availability: InStock
Author: Nham Vu

Convert plain text or numbers to binary (base-2) representation, with 7-bit ASCII or 8-bit byte options.

Input

Bit width

Separator

Binary Output

Enter text or a number and click Encode

Characters: 0 Groups: 0 Total bits: 0

Char	Dec	Hex	Binary

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Summary

Convert plain text or numbers to binary (base-2) representation, with 7-bit ASCII or 8-bit byte options.

How it works

Type or paste your text into the input field.
Select your encoding mode: 7-bit ASCII or 8-bit bytes.
Choose a separator style: space, dash, or none.
The binary output appears instantly in the result panel.
Copy the result with one click or clear the input to start over.

Use cases

Learn how computers represent text as binary data.
Verify ASCII/Unicode code points for specific characters.
Generate binary strings for low-level programming exercises.
Inspect multi-byte encoding differences between 7-bit and 8-bit modes.
Convert numbers to binary for bitwise operation study.
Create binary representations for educational demos or presentations.
Debug encoding issues in data transmission systems.
Understand how character encoding works under the hood.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu