HEX to Decimal

About the Hex to Decimal Converter

The Hex to Decimal Converter translates hexadecimal numbers (base-16) into their decimal (base-10) equivalents. Programmers reading memory addresses, web designers translating colour codes, electronics engineers reading register values, security analysts decoding malware indicators, and computer science students learning number systems all rely on this conversion every day.

How hexadecimal works

Hex uses sixteen digits: 0-9 for values zero through nine, then A-F for ten through fifteen. Each position represents a power of 16: rightmost is 16⁰ (1), next is 16¹ (16), then 16² (256), and so on. The decimal value is the sum of each digit times its place value. So FF = 15×16 + 15 = 255, and 1A2B = 4096 + 2560 + 32 + 11 = 6,699.

How to use it

1. Type a hexadecimal number (with or without the 0x prefix) into the input box.
2. The decimal equivalent appears instantly.
3. Or type a decimal number to see its hexadecimal form (reverse mode).
4. Copy either result with one click.

Common use cases

Translating CSS colour codes (#FF0000 = 16,711,680 in decimal RGB), reading memory addresses in debugger output, decoding MAC addresses, working with hardware registers in embedded firmware, decoding hash fingerprints, understanding HTTP error responses with hex codes, and completing computer science homework on number systems.

Privacy and reverse operation

Conversion runs entirely in your browser using native JavaScript number parsing. Nothing is sent to our servers. To go the other way and convert decimal to hex, just type into the decimal field for instant reverse output, or use our companion Decimal to Hex tool.

Tamer Baghdadi

CEO / Co-Founder