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Vigesimal (base 20) to Base 10

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The vigesimal or base 20 numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten).

conversion table

hexadecimal (base 16)base 10hexadecimal (base 16)base 10
1= 1b= 11
2= 2c= 12
3= 3d= 13
4= 4e= 14
5= 5f= 15
6= 6g= 16
7= 7h= 17
8= 8i= 18
9= 9j= 19
a= 1010= 20
base 10 is a positional numeral system with ten as its base. It uses 10 different digits for representing numbers. The digits for base 10 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

conversion table

base 10hexadecimal (base 16)base 10hexadecimal (base 16)
1≈ 111≈ b
2≈ 212≈ c
3≈ 313≈ d
4≈ 414≈ e
5≈ 515≈ f
6≈ 616≈ g
7≈ 717≈ h
8≈ 818≈ i
9≈ 919≈ j
10≈ a20≈ 10