Converter
Decimal to Hex Converter
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Output
Run process to generate output.
Frequently Asked Questions
How do I convert decimal to hexadecimal manually?
Divide by 16 repeatedly, noting remainders. Remainders 10–15 become A–F. Example: 255 ÷ 16 = 15 R15 → 15 ÷ 16 = 0 R15. Reading bottom-up: FF. Verify: 15×16 + 15 = 255. So 255 decimal = FF hex.
Why are letters A–F used in hexadecimal?
Hexadecimal is base-16 and needs 16 symbols. Digits 0–9 cover 0–9; letters A–F represent values 10–15. This convention has been standard since the early days of computing and is now universal across all programming languages and tools.
What are common uses of hexadecimal in computing?
Memory addresses (0x7F00FF), color codes (#FF5733 in CSS/HTML), MAC addresses (AA:BB:CC:DD:EE:FF), cryptographic hashes (SHA-256 outputs), raw binary data representation, HTML character entities, and CPU instruction codes.