IEEE 754 Floating-Point Converter
See how a number is stored as float32 and float64.
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter your values.
- 2See the result update instantly as you type.
- 3Change any value to compare scenarios.
About this tool
IEEE 754 Floating-Point Converter: See how a number is stored as float32 and float64. Type your numbers and the result is calculated instantly — no button to press, nothing to install. All math runs locally in your browser, so the values you enter are never sent anywhere.
Example
| Input | |
|---|---|
| Number or hex bits (0x…) | 0.1 |
| Result | |
| float32 hex | 0x3DCCCCCD |
| float32 stored value | 0.100000001 |
| float64 hex | 0x3FB999999999999A |
| float64 exact value | 0.10000000000000001 |
| float32 exponent | -4 |
| float64 exponent | -4 |
How do I use the IEEE 754 Floating-Point Converter?
Enter your values. See the result update instantly as you type. Change any value to compare scenarios.
Is the IEEE 754 Floating-Point Converter free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.