Binary alphabet chart
| Letter | Capital | Lowercase |
|---|---|---|
| A a | 01000001 | 01100001 |
| B b | 01000010 | 01100010 |
| C c | 01000011 | 01100011 |
| D d | 01000100 | 01100100 |
| E e | 01000101 | 01100101 |
| F f | 01000110 | 01100110 |
| G g | 01000111 | 01100111 |
| H h | 01001000 | 01101000 |
| I i | 01001001 | 01101001 |
| J j | 01001010 | 01101010 |
| K k | 01001011 | 01101011 |
| L l | 01001100 | 01101100 |
| M m | 01001101 | 01101101 |
| N n | 01001110 | 01101110 |
| O o | 01001111 | 01101111 |
| P p | 01010000 | 01110000 |
| Q q | 01010001 | 01110001 |
| R r | 01010010 | 01110010 |
| S s | 01010011 | 01110011 |
| T t | 01010100 | 01110100 |
| U u | 01010101 | 01110101 |
| V v | 01010110 | 01110110 |
| W w | 01010111 | 01110111 |
| X x | 01011000 | 01111000 |
| Y y | 01011001 | 01111001 |
| Z z | 01011010 | 01111010 |
Binary alphabet chartstringmash.com/binary-alphabet
The pattern in every letter
Look down the chart and every capital starts 010, and every lowercase letter starts 011. The last five bits count through the alphabet: A is 00001, B is 00010, and Z is 11010, which is 26. That's the whole trick.
So you can read a letter without the chart. Drop the first three bits, turn the last five into a number, and count that far into the alphabet. 01001000 ends 01000, which is 8, and the eighth letter is H.
Capital and lowercase differ in a single bit, the third from the left. That one bit is worth 32, which is why a and A are 32 apart in the ASCII table. Flip it and the case changes.
Where the numbers come from
Each letter's binary is its ASCII code written in base 2. A is 65, which is 64 + 1, so its binary has a 1 in the 64s place and a 1 in the 1s place: 01000001. The binary to decimal converter shows the working for any of them.
Eight bits make a byte, so each letter here takes one byte. Letters outside English, and emoji, take more than one byte in UTF-8, and the translator above shows every byte.
Questions
What is A in binary?
01000001 for a capital A, and 01100001 for a lowercase a.
Why does every letter have eight digits?
Each letter is stored as one byte, which is eight bits. The leading 0 is part of the byte even though it doesn't change the number.
How do I write my name in binary?
Type it into the translator at the top. Each letter becomes eight digits, with a space between letters.