Number Base Converter
Convert between Binary, Octal, Decimal and Hexadecimal instantly — bit visualiser, number info, fully local.
Quick:
Binary
Base 2
Octal
Base 8
Decimal
Base 10
Hexadecimal
Base 16
—
Decimal value
—
Bits needed
—
Bytes
—
Power of 2
Bit visualiser
Enter a number to see its bits.
How it works
1
Type in any field
Enter a value in Binary, Octal, Decimal or Hexadecimal — all other fields update instantly.
Enter a value in Binary, Octal, Decimal or Hexadecimal — all other fields update instantly.
2
Input validation
Each field only accepts valid characters for its base. Invalid input is highlighted in red immediately.
Each field only accepts valid characters for its base. Invalid input is highlighted in red immediately.
3
Bit visualiser
The bit grid shows every binary digit as a coloured square, grouped in bytes of 8. Bright = 1, dim = 0.
The bit grid shows every binary digit as a coloured square, grouped in bytes of 8. Bright = 1, dim = 0.
4
Number info
See the decimal value, number of bits and bytes required, and whether the number is a power of 2.
See the decimal value, number of bits and bytes required, and whether the number is a power of 2.