Base Converter

Calculators

Convert between decimal, hex, binary and octal at any size, with bitwise operations and a bit-by-bit view.

Runs in your browser•Zero cloud uploads / Files stay on device•No account required

Value

Reading it as

Digits for decimal: 0123456789. A 0x-style prefix, underscores and spaces are all accepted.

Bitwise (optional)

Width

Width only affects the bitwise operations and the bit grid — NOT and right-shift have no meaning without one. Plain conversion is exact at any size.

Digit grouping

Optimized For Platforms

developer

How it works

1Type a value and say which base it is in. Prefixes, underscores and spaces are all accepted.

2Every other base appears at once, exactly — including 64-bit values, where converters built on JavaScript numbers start rounding.

3Add a bitwise operation if you need one, and pick the width: NOT and right-shift have no meaning without one.

4The bit grid shows the result one bit at a time.