IEEE 754 Float Inspector
Bit-level IEEE 754 decode. Enter a decimal number or hex bit pattern.
IEEE 754 Float Inspector — Free Online Tool
Decodes the bit-level representation of IEEE 754 single (32-bit) and double (64-bit) floating-point numbers using DataView, showing the sign, exponent, mantissa bits, biased exponent value, and the reconstructed decimal, plus special values (NaN, Infinity, subnormals), useful for understanding floating-point precision loss, debugging 0.1 + 0.2 surprises, and porting float logic between languages.
How to use the IEEE 754 Float Inspector
- Open the tool above — it runs entirely in your browser, so your input never leaves this page.
- Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
- Copy the result from the output area with the copy button orCtrl/Cmd + C.
- No signup, no upload, and no tracking — repeat as often as you need.
Frequently asked questions
Is the IEEE 754 Float Inspector free to use?
Yes. The IEEE 754 Float Inspector is completely free, with no signup, no ads inside the tool, and no hidden limits.
Does the IEEE 754 Float Inspector upload my data?
No. The IEEE 754 Float Inspector processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.
Does the IEEE 754 Float Inspector work offline?
After the page loads, the IEEE 754 Float Inspector runs entirely in your browser, so it keeps working without a network connection.
Free & private — why use this IEEE 754 Float Inspector
The IEEE 754 Float Inspector runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.