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Convert Hexadecimal to Decimal

1 Hexadecimal (hex) = 0 Decimal (dec). Use the free converter below to instantly convert any hexadecimal value to decimal, or view the full conversion table and formula.

1 hex = 0 dec

Hexadecimal to Decimal Conversion Table

Hexadecimal (hex) Decimal (dec)
0 0
1 1
A 10
F 15
10 16
1F 31
20 32
40 64
64 100
7F 127
80 128
C8 200
FF 255
100 256
200 512
3E8 1,000
400 1,024
800 2,048
1000 4,096
FFFF 65,535

How to Convert Hexadecimal to Decimal

Expand each hex digit × 16^position, sum all values

To convert hexadecimal to decimal, multiply each digit by 16 raised to the power of its position (starting from 0 on the right), then sum all values. For example, 2A in hex: (2 × 16¹) + (10 × 16⁰) = 32 + 10 = 42 in decimal.

Hexadecimal to Decimal Examples

0 hex is equal to 0 dec. Using the formula Expand each hex digit × 16^position, sum all values, 0 hex converts to 0 dec.

1 hex is equal to 1 dec. Using the formula Expand each hex digit × 16^position, sum all values, 1 hex converts to 1 dec.

A hex is equal to 10 dec. Using the formula Expand each hex digit × 16^position, sum all values, A hex converts to 10 dec.

F hex is equal to 15 dec. Using the formula Expand each hex digit × 16^position, sum all values, F hex converts to 15 dec.

10 hex is equal to 16 dec. Using the formula Expand each hex digit × 16^position, sum all values, 10 hex converts to 16 dec.

Hexadecimal to Decimal FAQ

What is hexadecimal?

Hexadecimal is a base-16 number system using digits 0-9 and letters A-F (where A=10, B=11, C=12, D=13, E=14, F=15).

What is 0xFF in decimal?

0xFF in hexadecimal equals 255 in decimal. Each F represents 15, so FF = (15 × 16) + 15 = 255.

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