Convert Hexfloat to Float
Create a floating-point number from a hexfloat number. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Convert Hexfloat to Float
- 1. Paste the hexfloat literal. Enter a C99-style hexadecimal floating-point literal such as 0x1.8p3, made of a hex mantissa, a binary point and a power-of-two exponent after the p.
- 2. Review the computed value. The tool parses the mantissa and exponent according to the C99 hexfloat grammar and computes the exact decimal floating-point number it represents.
- 3. Copy the decimal result. Copy the plain floating-point number into your code, calculator or documentation now that the hexfloat notation has been resolved to an ordinary value.
When to use Convert Hexfloat to Float
Convert Hexfloat to Float parses C99 hexadecimal floating-point literals, the 0x1.8p3 style notation that expresses a mantissa and a power-of-two exponent exactly, and returns the decimal number it represents. It is aimed at anyone reading numerical code or debug output that uses this format.
- Reading a printf %a format output. A C or C++ program printed a floating-point value using the %a format specifier for exact reproducibility, and you need the ordinary decimal number to sanity check a calculation.
- Debugging a floating-point precision issue. You are comparing bit-exact hexfloat values from a numerical library's test suite and need to see the actual decimal magnitude each literal represents.
- Understanding a compiler's constant folding output. A compiler explorer or disassembly shows a floating-point constant in hexfloat form, and converting it to decimal confirms it matches the source literal you expected.
Examples
One and a half x 8
Input
0x1.8p3
Output
12
Half
Input
0x1p-1
Output
0.5
About the Convert Hexfloat to Float tool
Convert Hexfloat to Float is a free online tool that works entirely inside your web browser. Create a floating-point number from a hexfloat number. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 108 Hex utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
There is nothing to configure. Provide the input and the result appears on its own. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Convert Hexfloat to Float free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.