Type into any of Binary, Octal, Decimal, or Hexadecimal — the others update live. Invalid characters for that base are flagged in red without breaking the other fields.

Click any bit to flip it directly — all fields update instantly. Useful for understanding exactly which bit controls which value.

Toggle Signed (two's complement) to interpret the bit pattern as a signed integer instead of unsigned — the decimal value updates to show negative numbers when the high bit is set.

Convert to/from any base 2–36 using standard digits 0–9 then letters A–Z (base 36 uses every digit and letter).

These encode the value's raw bytes, not the number itself — useful for understanding how binary data is represented as text in encodings like Base64.

Shows how the decimal value would be stored as a 32-bit float or 64-bit double — sign, exponent, and mantissa bits color-coded, with the reconstructed value shown below.