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Tool Factory

Encoding & Number Bases

Float Decoder

Decode Float input into a usable result. Enter the data, choose the input and output formats, then copy the result.

Tool workspace

Your input stays in this browser.

Add the required input to continue.

Needs input

You can run the tool again after any change.

Options

Your result appears here

Decode Float input into a usable result. Enter the data, choose the input and output formats, then copy the result.

This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.

Float Decoder converts data between formats in your browser. For a correct result, match IEEE width and endianness.

the decoded floating-point value Processing runs in the browser.

Instructions

  1. Provide text or data for this tool.
  2. Select the float width and byte order.
  3. Compare the output with a known Float Decoder sample.
  4. Keep the original value until the receiving system accepts the result.

Example

Input: 3F800000

Settings: Float Decoder: select the float width and byte order

Result: the decoded floating-point value

Limits

  • Float Decoder: bit patterns can represent NaN or infinity
  • Float Decoder: The operation does not detect a different input format automatically.
  • Float Decoder: Processing stays in the browser.

Questions

Does Float Decoder accept decimal numbers or raw bytes?

Despite the page name, this operation takes written floating-point numbers and produces IEEE 754 bytes. Select Size, Endianness, and Delimiter for the intended binary representation. Use Float Encoder for the reverse bytes-to-number operation.

How do I choose float32 or float64 output?

Select Float (4 bytes) for a four-byte value or Double (8 bytes) for an eight-byte value. The destination format determines the correct choice. Values can round when the chosen representation cannot express them exactly.

Why does changing endianness change the output bytes?

Endianness controls byte order within each floating-point value. The mathematical input can stay the same while the byte sequence reverses. Match the destination reader, then decode with the same size and byte order.