Septenary, Numerals

The septenary numeral system is the base-7 number system, and uses the digits 0-6. Septenary is a very good numeral system for repeating fractions, but poor for terminating fractions. 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 >>