Skip to main content
Calcimator

Binary/Hex/Decimal Converter

Convert between binary, octal, decimal, and hexadecimal number systems. Includes bit count, byte size, and ASCII character lookup.

Convert

Results

Binary
1111 1111
Octal
0o377
Decimal
255
Hexadecimal
0xFF
Bits
8
Bytes
1
ASCII Character
N/A
Power of 2?
No
How to Use This Calculator
  1. Enter the decimal Input Number (e.g., 255) — the calculator converts from base 10.
  2. Read the Binary output grouped in nibbles (4-bit groups) for easy reading — useful for bit-masking.
  3. Check the Hexadecimal output (0x prefix) for use in color codes, memory addresses, and protocols.
  4. Review Bits and Bytes to understand the storage size required for the value.
  5. The ASCII Character field shows the printable character for that code point (useful for character encoding work).
Ad Placeholder

Formula

Decimal to binary: divide by 2, track remainders. Hex uses base-16 (0-9, A-F). Octal uses base-8 (0-7).

Related Calculators

Password Strength Calculator

Check how strong your password could be based on length and character types. See estimated time to crack.

Download Time Calculator

Calculate how long it takes to download a file at various internet speeds. Compare download times across different connection speeds.

Subnet Calculator

Calculate subnet mask, network address, broadcast address, usable host range, and CIDR notation for any IP address.

Ad Placeholder