Base 2–36

Radices

Type in any base, or in Roman. Place-value fields update together, and each Roman letter keeps its own amount. Click a bit to flip it.

DECDecimal

Paste 0b, 0o, 0x, or 36#Z — prefixes are detected

BINBinary
OCTOctal
HEXHexadecimal
B12Custom base
B12Base 12

Digits 0–B

Roman

Kept apart from place value. Each letter is a sign with its own amount.

  • I1
  • V5
  • X10
  • L50
  • C100
  • D500
  • M1000
ROMNumeral

A smaller sign before a larger one subtracts.

This number, sign by sign

C+100C+100L+50V+5= 255

1 to 30

Bit board

B3
B2
B1
B0

Unsigned 32-bit: 255

Place values

  1. 2 × 102200
  2. 5 × 10150
  3. 5 × 1005

Properties

Bits
8
Bytes
1
Parity
Odd
Power of two
No
Char
ÿ
RGB#0000FF

Examples