The best online IEEE 754 Float Converter tool in Developer Tools category - completely free to use
Convert decimal numbers to IEEE 754 binary representation and visualize sign bit, exponent, mantissa.
32-bit Float: 1-bit sign + 8-bit exponent + 23-bit mantissa (bias: 127)
64-bit Double: 1-bit sign + 11-bit exponent + 52-bit mantissa (bias: 1023)
Value Calculation: (-1)^sign Γ mantissa Γ 2^(exponent-bias)
Floating Point Error: Understand why 0.1 + 0.2 β 0.3.