Hex Calculator

Base Converter

Enter a value in one box (supports prefixes like 0x, 0b, 0o) — the others update automatically.

Hex

Decimal

Binary

Octal

Bit width (for NOT/masking)

Used when applying NOT and displaying masked values.

Paste or drop text here to fill the focused input.

Hex Operations

Operands accept hex (with or without 0x), decimal, binary (0b), or octal (0o/0 prefix). Uses arbitrary precision via BigInt in your browser.

A

B

Operation

Mask bit width

Applied to results for bitwise ops and NOT.

Hex Calculator – Quick Cheat Sheet

Bases & prefixes: Hex 0x, Binary 0b, Octal 0o/0, Decimal (no prefix).
Digits: Hex uses 0–9 and A–F (case-insensitive). Example: 0xFF = 255 dec.
Bit width: Select 8/16/32/64 for masking bitwise results and NOT.
Division: Shows quotient and remainder. Remainder has the same sign as the dividend with BigInt.
Normalization: Hex outputs are uppercase, no leading zeros (except 0). Binary groups can be visually separated if needed.
Two’s complement: This tool treats numbers as unsigned for display; apply bit width + interpret MSB for signed meaning.

Tips & edge cases

For NOT, value is inverted within the chosen bit width: ~A & mask.
Binary/Octal inputs can be large — parsing uses BigInt so you’re not limited to 32-bit.
Empty B is ignored for NOT. Division by zero is blocked.

Base Converter

Hex Operations

Hex Calculator – Quick Cheat Sheet

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