Hex Calculator
Convert and do arithmetic in hexadecimal.
Convert a number
Hexadecimal
1F4
Decimal
500
Binary
111110100
Octal
764
Sixteen symbols
Hex extends digits with A–F for 10–15; each place is a power of 16, so 1F4₁₆ = 256 + 240 + 4 = 500. Because 16 = 2⁴, hex ↔ binary conversion is digit-by-digit: F = 1111, 4 = 0100.
Where you meet hex
Color codes (#1A5B4B), memory addresses, MAC addresses, and hash digests are all hex — compact enough for humans, trivially convertible for machines. '0x' is the programmer's prefix marking a hex literal.
Frequently asked questions
- How does the Hex Calculator work?
- Convert and do arithmetic in hexadecimal.
- Is the Hex Calculator free to use?
- Yes. The Hex Calculator is completely free, runs entirely in your browser, and requires no account or sign-up. Your inputs never leave your device.
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