Roman Numerals to Arabic Numbers 100 to 3000 by 100

Different from Arabic numbers , there are 7 Roman numerals: I, V, X, L, C, D and M, where V is equal to 5 and M is equal to 1000.

The basic rule is when the larger number is in front, then add, when the smaller number is in front, then minus. For example:

• VI: where V is 5 and I is 1, V is larger and in front, so add the 2 numbers together 5+1 = 6
• IL: where L is 50 and I is 1, I is smaller and in front, so minus the 2 numbers together 50-1 = 49
• where the letters are the same, add together: III = 1 + 1 + 1 = 3

Convert Rules:

The following is the table to convert from Roman numerals to Arabic numbers. For example,

• 1800 = 1000 + 800 = M + DCCC = MDCCC
• 2300 = 2000 + 300 = MM + CCC = MMCCC

Number	Thousands	Hundreds	Tens	Ones
1	M	C	X	I
2	MM	CC	XX	II
3	MMM	CCC	XXX	III
4		CD	XL	IV
5		D	L	V
6		DC	LX	VI
7		DCC	LXX	VII
8		DCCC	LXXX	VIII
9		CM	XC	IX

The following is the conversion from Roman numerals to Arabic numbers for 100 to 3,000 by 100:

Roman	Arabic	Roman	Arabic
C	100	MDC	1600
CC	200	MDCC	1700
CCC	300	MDCCC	1800
CD	400	MCM	1900
D	500	MM	2000
DC	600	MMC	2100
DCC	700	MMCC	2200
DCCC	800	MMCCC	2300
CM	900	MMCD	2400
M	1000	MMD	2500
MC	1100	MMDC	2600
MCC	1200	MMDCC	2700
MCCC	1300	MMDCCC	2800
MCD	1400	MMCM	2900
MD	1500	MMM	3000

The following is the conversion from Arabic numbers to Roman numerals for 100 to 3,000 by 100:

Arabic	Roman	Arabic	Roman
100	C	1600	MDC
200	CC	1700	MDCC
300	CCC	1800	MDCCC
400	CD	1900	MCM
500	D	2000	MM
600	DC	2100	MMC
700	DCC	2200	MMCC
800	DCCC	2300	MMCCC
900	CM	2400	MMCD
1000	M	2500	MMD
1100	MC	2600	MMDC
1200	MCC	2700	MMDCC
1300	MCCC	2800	MMDCCC
1400	MCD	2900	MMCM
1500	MD	3000	MMM

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• Roman Numerals to Arabic Numbers 1 to 100
• Roman Numerals to Arabic Numbers 10 to 1000 by 10