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Binary Converter

Convert between text, binary, hex, and decimal formats. Bidirectional conversion between all formats.

Text (ASCII) Enter text or edit any format

Binary 8-bit groups

Hexadecimal Base 16

Decimal (ASCII codes) Base 10

Bidirectional Conversion

Edit any format and all others update automatically. Try converting binary back to text.

Developer Essential

Essential for understanding how computers store and represent text data.

Quick Reference

65 | 01000001

97 | 01100001

48 | 00110000

Space

32 | 00100000

Formats

2-way

Conversion

100%

Free

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About the Binary Converter

The binary converter translates text into the 0s and 1s computers store, and converts numbers between binary (base 2), decimal (base 10), and hexadecimal (base 16).

How to use it

1 Type text or a number into any box.
2 The other formats update as you type.
3 Copy whichever format you need.

Frequently asked questions

How is text converted to binary?

Each character is turned into its character code (UTF-8 bytes), and each byte is written as 8 binary digits. "A" is 65, which is 01000001.

How do I convert binary to decimal?

Multiply each digit by 2 raised to its position, counting from 0 on the right, and add them up. 1011 is 8 + 0 + 2 + 1 = 11.

Why is hexadecimal used?

One hex digit stands for exactly 4 binary digits, so hex is a compact way to write binary. FF in hex is 11111111 in binary and 255 in decimal.

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