Vigesimal, Numerals

The vigesimal or base-20 numeral system is based on twenty (in the same way in which the ordinary decimal numeral system is based on ten). Twenty is the sum of all fingers and toes on unmutated human hands and feet, and is the product of five and four. Read more >>

I want to convert:

Positional systems

Binary
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Ternary
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Quaternary
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Quinary
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Senary
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Septenary
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Octal
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Nonary
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Decimal
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Undecimal
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Duodecimal
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Base 13
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Hexadecimal
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Vigesimal
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Numeral systems

Arabic numerals
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Roman numerals
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Languages

English
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German
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Spanish
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Swedish
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A numeral is a symbol or group of symbols that represents a number. Numerals differ from numbers just as words differ from the things they refer to. The symbols "11", "eleven" and "XI" are different numerals, all representing the same number. This article attempts to explain the various systems of numerals. Read more >>