Text to Binary Converter

Conversion table

Uppercase A–Z with code points and 8-bit binary. Lowercase a–z are 97–122 and digits 0–9 are 48–57.

Powers of 2

Text to binary in code

Python

' '.join(format(b, '08b') for b in "Hi".encode())
# → '01001000 01101001'

JavaScript

const bytes = new TextEncoder().encode("Hi");
[...bytes].map(b => b.toString(2).padStart(8, "0")).join(" ");
// → '01001000 01101001'

C

#include <stdio.h>

int main(void) {
    const char *s = "Hi";
    for (int i = 0; s[i] != '\0'; i++) {
        for (int bit = 7; bit >= 0; bit--)
            putchar(((s[i] >> bit) & 1) ? '1' : '0');
        putchar(' ');
    }
    putchar('\n');  /* → 01001000 01101001 */
    return 0;
}

Common values

• A = 01000001 (65)
• Z = 01011010 (90)
• a = 01100001 (97)
• space = 00100000 (32)
• 0 = 00110000 (48)
• ! = 00100001 (33)

Key takeaways

• Each character is stored as its code point — ‘A’ is 65.
• Plain ASCII text uses 8 bits (one byte) per character.
• UTF-8 keeps ASCII identical and uses multiple bytes for other scripts and emoji.
• Group output in 8s to read one character per group.