Hex Calculator
Perform arithmetic on hexadecimal numbers
Hex Calculator is a free online tool from BrowserUtils that perform arithmetic on hexadecimal numbers. It runs entirely in your browser — your data never leaves your device. No account required.
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How to use Hex Calculator
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About Hex Calculator
Free online hexadecimal calculator. Add, subtract, multiply, and divide hex numbers with results in both hexadecimal and decimal. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
Hex Calculator specs
- Runtime
- 100% client-side (browser)
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
How do I add hexadecimal numbers?
Enter two hex values and select the add operation. The tool converts them to decimal internally, performs the arithmetic, and displays the result in both hex and decimal.
What characters are valid in hexadecimal?
Hexadecimal uses digits 0-9 and letters A-F (case-insensitive). Each hex digit represents 4 bits, so two hex digits represent one byte (0-255).
Why is hexadecimal used in programming?
Hex is a compact way to represent binary data. One hex digit maps to exactly 4 bits, so a byte is always two hex digits. This makes it common in memory addresses, color codes, and low-level debugging.
Can I use the 0x prefix when entering hex values?
The tool accepts hex digits directly (e.g., FF, 1A3). If you paste a value with a 0x prefix, remove the prefix first. The result is displayed as a plain hex string alongside its decimal equivalent.
Does the hex calculator handle negative numbers?
Enter positive hex values for standard arithmetic. For signed representations, convert to decimal, perform the operation, and convert back. The tool shows results in both hex and decimal for easy verification.
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