1 Binary to Decimal
1 binary = 1 decimal
1 written in decimal is 1.
1 binary = 1 decimal
How to convert 1 to decimal
Binary to decimal
Multiply each digit by 2 to the power of its position (0 on the right), then add:
| Digit | Place value | Digit × place |
|---|---|---|
1 | 20 = 1 | 1 |
1 = 1
1 (binary) in other systems
| Roman numerals | I |
| Hexadecimal | 1 |
| Octal | 1 |
| Duodecimal | 1 |
| Ternary | 1 |
| Base 36 | 1 |
| Vigesimal | 1 |
| Quaternary | 1 |
| Quinary | 1 |
| Senary | 1 |
Nearby binary to decimal conversions
| 0 to decimal | 0 |
| 10 to decimal | 2 |
| 11 to decimal | 3 |
| 100 to decimal | 4 |
| 101 to decimal | 5 |
| 110 to decimal | 6 |
| 111 to decimal | 7 |
| 1000 to decimal | 8 |
| 1001 to decimal | 9 |
| 1010 to decimal | 10 |
About the number 1
- 1 is an odd number.
- 1 is a power of two: 20.
- Written in binary it needs 1 bit, so it fits in one byte.
Reverse conversion
Frequently asked questions
What is 1 in decimal?
1 in binary is 1 in decimal.