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Math: Numeral system converter
Convert common numbers (Hindu-Arabic) to the Roman numeral system.
Please turn on Javascript to let the converter do it's job.
The maximum number is 3999 (MMMCMXCIX).
Hindu-Arabic numerals to Roman numeralsRoman numerals to Hindu-Arabic numerals
All math converters
Positional notation converter (Binary (Base 2), Ternary (Base 3), Quaternary (Base 4), Quinary (Base 5), Octal (Base 8), Decimal (Base 10), Duodecimal (Base 12), Hexadecimal (Base 16), Vigesimal (Base 20), Duotrigesimal (Base 32))
Angle converter (Degree, Grad, Minute of arc, Point, Radian, Second of arc)
Numeral system converter (Hindu-Arabic numerals, Roman numerals)
Math fun fact
111,111,111 x 111,111,111 = 12,345,678,987,654,321
Common conversions:

Duotrigesimal (Base 32) to Vigesimal (Base 20)
Foot per hour to Speed of sound
Attogram to Decagram
Milligram to Exagram
Milligram to Picogram
Nanogram to Yottagram
Ton to Pound
Microgram to Nanogram
Statute Mile to Foot
Day to Minute
Decagram to Microgram
Vigesimal (Base 20) to Octal (Base 8)
Ton (British) to Hundredweight (British)
Kelvin to RÝmer
Centimeter to Millimeter

Other conversions:

Unicode to Unicode for HTML (decimal)
Text to Unicode
Unicode to Unicode for HTML (hexadecimal)
Unicode to Text
Resolution to Megapixel
Date to Zodiac (Tropical)
Text to Unicode for HTML (hexadecimal)
Text to Unicode for HTML (decimal)
Date to Zodiac (Western)
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