How To Use This Converter
Type a number in any of the Number-Base Radix input fields and press Enter or Return on your keyboard or keypad.
The other Number-Base Radix fields will show the number you entered, converted to the other radixes.
TIP:Entry Errors
If the data you type into any Base field contains disallowed symbols for that field, the converter will notify you.
In that case, simply re-type valid data in the field of your choice and press Enter or Return.
TIP:Copy and Paste
You can Copy and Paste any of the fields by selecting the text in the field,
then pressing Control-C to copy, and Control-V to paste.

Radix-10

Decimal or Radix-10 Number System
Decimal is a Radix-10 positional notation number system. Radix-10 or Base-10 means that each Decimal "digit"
represents a multiple of increasing powers of 10, from right to left, such as:
... 10^{3}, 10^{2}, 10^{1}, 10^{0}
The valid Decimal symbols are:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
For example, the Decimal number 927 represents the following numerical expression:
(9 x 10^{2}) + (2 x 10^{1}) + (7 x 10^{0})History of the Decimal Number System
The modern Decimal number system, known as the Hindu-Arabic number system, originated in India around the 9th century CE.
The system spread to the western world during the Middle Ages (1000 to 1300 CE) as a result of trade.
Some scholars attribute the first documented use of a Decimal system to China in the 1st century BCE.

Radix-12

Duodecimal or Radix-12 Number System
Duodecimal is a Radix-12 positional notation number system. Radix-12 or Base-12 means that each Duodecimal
"digit" represents a multiple of increasing powers of 12, from right to left, such as:
... 12^{3}, 12^{2}, 12^{1}, 12^{0}
The valid Duodecimal symbols are:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,A, B
Where: A=10, B=11
For example, the Duodecimal number BA9 represents the number 1713 in the Decimal system, like so:
(11 x 12^{2}) + (10 x 12^{1}) + (9 x 12^{0})History of the Duodecimal Number System
Languages using Duodecimal number systems are rare. Languages in the Nigerian Middle Belt such as Janji,
Gbiri-Niragu (Kahugu), the Nimbia dialect of Gwandara, the Chepang language of Nepal, and the Mahl language of
Minicoy Island in India are known to use Duodecimal numerals.
J. R. R. Tolkien's Elvish languages use a Duodecimal number system.
Units of time in many civilizations are a Duodecimal system. There are 12 signs of the zodiac, 12 months
in a year, and 12 hours in a day or night.
Traditional Chinese calendars, clocks, and compasses are based on the 12 Earthly Branches.