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Unit Conversion Calculators

Hexadecimal to Decimal Calculator

Convert a base-16 (hexadecimal) number to base-10 decimal notation.

Enter a hex number using digits 0-9 and letters A-F.
Decimal —
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About the Hexadecimal to Decimal Calculator

Hexadecimal (base-16) uses sixteen symbols — 0 through 9 and A through F — and is widely used in programming, memory addresses and color codes. Each position represents a power of 16.

Formula: Decimal = ∑ (digit × 16position)

For example, hex 2A equals decimal 42 (2×16 + 10×1). Essential for reading memory dumps, error codes and hex color values.

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