Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.

Calculators Runs in your browser

Hexadecimal Calculator

Add, subtract, multiply, divide hex numbers with decimal conversion. 100% private. 100% private.

100% Private Works Offline Instant

Hex A

Hex B

Bit width (0=none)

Signed (two's complement)

Endianness swap (big ↔ little)

Hex value

Byte count (1-8)

Batch mode

Privacy: all hex math runs locally. History in localStorage only.

Add, subtract, multiply, divide hex numbers with decimal conversion. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

All tools