What Does 01001010 Mean in Binary?
01001010 is the capital letter J in ASCII and UTF-8. In decimal it is 74, and in hex 4A.
- Character
- J
- Decimal
- 74
- Hex
- 4A
01001010 step by step
Each 1 switches on its place value. Add the place values of the 1s to get the ASCII code.
| Bit | Place value | Value |
|---|---|---|
| 0 | 2to the power of 7 = 128 | 0 |
| 1 | 2to the power of 6 = 64 | 64 |
| 0 | 2to the power of 5 = 32 | 0 |
| 0 | 2to the power of 4 = 16 | 0 |
| 1 | 2to the power of 3 = 8 | 8 |
| 0 | 2to the power of 2 = 4 | 0 |
| 1 | 2to the power of 1 = 2 | 2 |
| 0 | 2to the power of 0 = 1 | 0 |
64 + 8 + 2 = 74
Decode more binary
The converter starts with 01001010. Add more bytes to decode a whole message.
Binary to text
| Binary | Dec | Hex | Char |
|---|---|---|---|
| 01001010 | 74 | 4A | J |
Uppercase and lowercase
The lowercase j is 01101010, which is 106: 32 more than J. Only the third bit from the left changes.
Frequently asked questions
What letter is 01001010 in binary?
01001010 is the capital letter J. Its place values add up to 74, and 74 is J in the ASCII table.
What is 01001010 in decimal and hex?
01001010 is 74 in decimal and 4A in hex. The first four bits, 0100, make the hex digit 4, and the last four, 1010, make A.
Is 01001010 the same in ASCII and UTF-8?
Yes. UTF-8 keeps every ASCII code from 0 to 127 as a single byte, so 01001010 is J in both.