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Number Base (Radix) Converter

Hexadecimal to Decimal Converter

Convert base-16 hexadecimal codes to decimal numbers.

Number Base (Radix)
(HEX)
Example: FF HEX
(DEC)
e.g. 255DEC
Standard: Base 10

Enter any number above to convert Hexadecimal to Decimal. Click (i) for brief unit info.

Converting the other way?

Switch directly to the reverse calculator: Decimal to Hexadecimal Converter

Open Decimal to Hexadecimal Converter

How to Convert Hexadecimal (Base 16) to Decimal (Base 10)

Official Mathematical Formula

Decimal = ∑ (hex_digit × 16^position)

Where the input value in HEX is transformed using the exact standardized conversion factor to produce the output in DEC.

Practical Calculation Example

You can verify this calculation directly using our interactive tool above.

Quick Conversion Reference Table (HEX → DEC)

Hexadecimal (Base 16) (HEX)
Decimal (Base 10) (DEC)
Copy
1 HEX1 DEC
2 HEX2 DEC
3 HEX3 DEC
5 HEX5 DEC
10 HEX16 DEC
15 HEX21 DEC
20 HEX32 DEC
25 HEX37 DEC
50 HEX80 DEC
75 HEX117 DEC
100 HEX256 DEC
250 HEX592 DEC
500 HEX1,280 DEC
1000 HEX4,096 DEC

Related Number Base (Radix) Calculators

All Number Base (Radix) Tools →

Decimal to Binary Converter

Convert base-10 decimal numbers to base-2 binary representation with bit grouping.

Binary = successive division by 2

Binary to Decimal Converter

Convert base-2 binary bit patterns into decimal integers.

Decimal = ∑ (bit × 2^position)

Hexadecimal (Base 16) to Decimal (Base 10) FAQs

Hex 10 is equal to 16 in decimal.