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Utility
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number-base-converter
Number Base Converter
in-browser
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How it works
Enter a number in any base.
See the converted value in all other bases instantly.
Copy any result to clipboard.
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Quick reference (0–15)
Dec
Hex
Bin
Oct
0
0
0
0
1
1
1
1
2
2
10
2
3
3
11
3
4
4
100
4
5
5
101
5
6
6
110
6
7
7
111
7
8
8
1000
10
9
9
1001
11
10
A
1010
12
11
B
1011
13
12
C
1100
14
13
D
1101
15
14
E
1110
16
15
F
1111
17
Quick Answers
(3)
What number bases are supported?
Decimal (base 10), hexadecimal (base 16), binary (base 2), and octal (base 8). Type in any field and the others update automatically.
What is the maximum number I can convert?
JavaScript safely handles integers up to 2^53 - 1 (9,007,199,254,740,991). Numbers beyond this may lose precision.
How is bit length calculated?
Bit length is the minimum number of binary digits needed to represent the number, calculated as floor(log2(n)) + 1.