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HEX Calculator

Convert between hexadecimal, decimal, binary, and octal number systems, plus perform hex arithmetic.

Operation Mode

Number Conversion

Hexadecimal (Base 16)

0x

Decimal (Base 10)

Binary (Base 2)

Octal (Base 8)

Common Values

Reference

Hex Digits

0

0

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

A

10

B

11

C

12

D

13

E

14

F

15

Powers of 16

16⁰1

16¹16

16²256

16³4,096

16⁴65,536

Tips

• Hex uses digits 0-9 and letters A-F
• Each hex digit represents 4 binary bits
• Common in programming for colors (#FF0000)
• Memory addresses often shown in hex
• Case insensitive (A = a, F = f)