IEEE 754 Float Converter

What is an IEEE 754 Float Converter?

Convert decimal floating-point numbers into 32-bit Single Precision and 64-bit Double Precision IEEE 754 binary bit representations (Sign, Exponent, Mantissa/Fraction), and vice versa.

Why Use This Converter?

  • Computer Architecture: Inspect how binary floating-point numbers are represented in memory and CPU registers.
  • Debugging Float Imprecision: Understand why `0.1 + 0.2 === 0.30000000000000004` in JavaScript and C.
  • Embedded Systems & Game Engines: Decode raw binary float buffers from C/C++ network packets.

How to Use

  1. Enter a decimal float (e.g. `3.14159`) or 32-bit / 64-bit binary bit string.
  2. View automatic breakdown into Sign Bit, Exponent Bits, and Mantissa Bits.
  3. Examine exact stored float value and rounding offset.

Real Conversion Example

Input (TEXT):

0.15625

Output (TEXT):

32-bit Binary: 0 01111100 01000000000000000000000
Sign: 0 (+)
Exponent: 01111100 (Decimal 124, Unbiased -3)
Mantissa: .01000000000000000000000 (1.25 in binary)

Important Technical Details & Mechanics

  • JavaScript ArrayBuffer / DataView: Uses native TypedArrays (`Float32Array`, `Float64Array`) for exact hardware-level bit extraction.
  • Special Value Support: Full support for `+0`, `-0`, `+Infinity`, `-Infinity`, and `NaN` bit patterns.
  • Local Browser Execution: Instant, hardware-exact calculation.

Related Developer & Utility Tools

Frequently Asked Questions

What is IEEE 754 standard?

It is the standard representation for floating-point numbers used by almost all modern CPUs, GPUs, and programming languages.

Why does 0.1 have rounding error in IEEE 754?

0.1 cannot be represented exactly as a finite binary fraction, leading to minor rounding discrepancies in 64-bit floats.

Does it support 64-bit Double Precision?

Yes, both 32-bit Single Precision and 64-bit Double Precision are calculated.

Is it free?

Yes, 100% free with no registration.

What is the main function of IEEE 754 Float Converter?

Convert floating-point numbers to single (32-bit) and double (64-bit) IEEE 754 binary bit patterns, sign, exponent, and mantissa. This converter transforms ieee 754 float data formats locally without server uploads.