Float Visualizer

IEEE 754 both ways. Type a decimal and its bits set themselves, or click a bit and the decimal follows.

Decimal value

Sign · 1 bit

Exponent

Mantissa

Hex

Raw bits (sign · exponent · mantissa)

Click any bit to flip it and the decimal above updates. Conversion runs through DataView and Float32Array / Float64Array, so a decimal with no exact binary form, 0.1 being the usual example, shows the bits it lands on instead.