Roman Numerals Converter (2024)

This simple Roman Numerals Converter can be used at any time to convert numbers to Roman numerals. If you need to make conversion from Arabic numbers to Roman numerals, simply enter the number to the box on the right, and press the button 'Convert to Roman'. You will get the exact representation of the number in Roman Numeral Symbols.

Recent Comments

Ian 2024-05-18 00:04:23

I=1
II=2
III=3
IV=4(not IIII)
V=5

Cool 2024-05-04 20:35:54

Only IV=4 IX=9 not IIII and not VIIII

kolton 2024-04-25 16:54:14

I loved this it helped me know what numbers in Romen numerals X out of X

Olivia 2024-04-13 09:55:30

Thank you one last time! this really helped me with my maths assesment

Ernest 2024-03-27 00:01:17

I agree with abdulla
You can only fit the roman numeral 3 times.

Akis 2024-02-10 19:11:14

Great tool!

CW 2024-01-17 04:20:59

Great, best converter!!! of all types...

Somto 2023-11-26 16:28:40

You really helped me with my assessment

Jason 2023-11-08 11:22:42

I ❤ This App X out of X (10 out of 10)

Lottie Indigo 2023-10-28 07:07:26

Quiz here! Which has more letters, 35 or 27?

Lauryn Bryant 2023-10-25 14:45:38

I have 7 pages of roman numerals and I'm ten this really helps totally recommend.

bilie 2023-10-23 22:50:49

This helped me a lot with my homework I'm finally smart again the bullies say I'm dumb I'm going to get all right on my homework yay.

Brian 2022-11-08 12:03:26

What is the significance of the comma's and dots between letters? i.e. M,DCCC.XLV.

Sandesh 2022-11-08 10:40:01

I want to learn how to read Roman numerals alphabet

A person 2022-10-24 22:52:59

This is very helpful. I have 9 pages of Roman Numeral conversions for homework and thankfully found this site!

Doug 2022-10-08 22:32:13

Wonderful converter.
I have a Scottish publication date of MCMXXV99. What does the 99 indicate - 9 September 1925 ??

Harvey Specter 2022-10-01 07:52:41

XXIV.I.MMIII is how you would write that.

ZaZA B. Wolobah 2022-09-15 02:30:30

This was very educative for me,I learn some new things that I never learn before

Sayed-Afghani 2022-09-07 09:39:25

We can't repeat (M, X, |, or V) more than 3

Sybil Sidebototm 2022-08-07 03:59:27

Generally speaking very Good to know such Roman Numbers especially as time and infinity we are drawing closer climate change and numbers of all kinds Maths and time combine Eternity! Planets forces of life and Space high far away! BC-AD tIme in the Creators hands.

Ryan 2022-07-30 15:55:48

This is going well, but 99999 is not [M repeated 99 times]CMXCIX, It can just be [X with a dash][C with a dash]M[X with a dash]CMXCIX.
Roman numerals can't be repeated more than 3 times.
Other than that, it deserves a VIII out of X! (8 out of 10)

SoulWatcher 2022-07-28 11:58:16

I can read Roman Numerals but sometimes I get messy with the rules because I don’t know the rules I thought I did but I don’t. Not fully. Such as the number 49. I thought take L = 50 and l = 1
And say lL I don’t know why this is wrong. I can write it this way as well.XLIX. Why is the layer the inky right way? What rule am I missing that I can’t seem to find anywhere? Cheers

Rob 2022-07-23 06:33:47

Seems like 490 should be XD, but the correct conversion here is CDXC. Hmm. And 990 should similarly be XM, but the correct answer here is CMXC. This must violate rules of conservation, no? Why would one use four numerals when one could use two? Please clarify. Thanks.

Taylor 2022-07-13 21:06:39

This helped me a lot shout out to the person who created this website DUBS IN CHAT

Oliver 2022-07-13 14:55:12

for 4000 and over we need I V X L C D and M with a dash over it for example 15364 should be X-V-CCCLXIV instead of MMMMMMMMMMMMMMMCCCLXIV

Serenity 2022-07-07 04:08:01

This is very helpful, thank you. Whoever made this site deserves a reward- like a lifetime supply of their favorite thing or something.

Fikri 2022-06-28 03:33:28

DCCCCL is not a valid Roman numeral

Abdullah 2022-06-25 14:50:13

4000 is not = MMMM
A number can't be repeated 3 times in a row

lola 2022-06-01 18:14:37

love this app it helps me a lot

Another Mark 2022-05-31 22:46:06

An error on posting Anonymous - 2022-05-11 02:19:34:
The posting listed "...VI=4, V=5, VI=6..."
Seems to be merely a typo. We know IV=4.

Speaking of the number four: my Latin professor said "IIII" was in common usage, just as was the language we refer to as Vulgar Latin ("vulgar," meaning "of the common people" as opposed to Classical Latin, used by scholarly, educated, elite citizenry).

Fikri 2022-05-28 00:48:16

The Roman numeral ll is not a valid representation for number one hundred (the correct Roman numeral is C)

Anonymous 2022-05-11 02:26:17

Here are some more tips and tricks.
If the bigger number comes first you add. For example VI is 6 because 5 + 1 = 6
But if the lower number comes first you subtract. But you subtract the bigger number to the smaller number. For example IV is four because 5 - 1 = 4. You don't do 1 - 5 = -4
The same rule applies to bigger numbers like 40 and 90. 40 would be XL not XXXX because 50 - 10 = 40 and XC is 90 and not LXXXX because 100 - 10 = 90

Anonymous 2022-05-11 02:19:34

This might help you.
I = 1 II = 2 III = 3 VI = 4 V = 5 VI = 6 VII = 7 VIII = 8
IX = 9 X = 10
L = 50 C = 100 D = 500 M = 1000
The line above the number means to multiply by 1000 so V with a line above it would be 5,000 and M with a line above it would be 1000000

name 2022-05-10 04:02:48

2013 = MMXIII

Thai 2022-05-06 11:09:43

Love ❤️ the app

you 2022-05-06 07:33:32

1980 = MCMLXXX

Ryan 2022-05-05 01:14:55

110 = CX LOL

you 2022-04-28 02:16:06

2020 = MMXX

you 2022-04-27 08:06:19

123 = CXXIII

you 2022-04-27 06:12:43

82=LXXXII

Lucian/Tinyger 2022-04-25 15:19:12

I love math! So many numbers! So many Roman numerals!

Connor B. 2022-04-22 14:52:04

2014 = MMXIV

Connor B. 2022-04-22 14:50:47

IIII = Invalid

Connor B. 2022-04-22 14:41:43

I = 1 - V = 5 - X = 10 - L = 50 - C = 100 - D = 500 - M = 1000

Home work 2022-04-21 09:14:08

Very easy thanks for help me

Mark 2022-04-21 03:12:41

For those asking about IIII for 4 rather than IV, the only place you will (or should) see IIII is on a clock. Early clock makes thought using IV made the clock face look unbalanced. The 4 & 8 are both 2 places from the bottom. The 8, written as VIII, and IV looked unbalanced (due to the angle of the numbers and their width). So they wrote the 4 as IIII.

Niko 2022-04-18 22:28:29

2022 = MMXXII

Ade 2022-04-18 17:57:32

How do I write 500 million in Roman numerals? I tried online sites but they proclaim its invalid! They only go up to 3,999,999. I thought it would be D(M), with (M) being 1 million.

name 2022-04-16 13:23:54

Number 4 is written as a numeral as: IV and not IIII (though the IIII form circulated as an additive form);
Number 5 is written as a numeral as: V and not IIIII;
Number 10 will be written as: X and not VV, nor VIIIII;
Number 100 will be written as: C and not LL, nor LXXXXX, nor XXXXXXXXXX.

NANE 2022-03-30 13:52:18

29=XXIX not XXVIIII

Roman Numerals Converter (2024)

FAQs

How to convert numbers to Roman numerals? ›

These roman numerals are I, II, III, IV, V, VI, VII, VIII, IX, and X represent 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 respectively. After 10, the roman numerals are followed by XI for 11, XII for 12, XII for 13, … till XX for 20.

What is ii v ix vi iii i in numbers? ›

Roman numerals from 1 to 30 are 1 = I, 2 = II, 3 = III, 4 = IV, 5 = V, 6 = VI, 7 = VII, 8 = VIII, 9 = IX, 10 = X, 11 = XI, 12 = XII, 13 = XIII, 14 = XIV, 15 = XV, 16 = XVI, 17 = XVII, 18 = XVIII, 19 = XIX, 20 = XX, 21 = XXI, 22 = XXII, 23 = XXIII, 24 = XXIV, 25 = XXV, 26 = XXVI, 27 = XXVII, 28 = XXVIII, 29 = XXIX, 30 = ...

What is 100,000 in Roman numerals? ›

So 5000 is V with a bar over it. 10,000 is X with a bar over it. 50,000 is L with a bar over it. 100,000 is C with a bar over it.

What is XXL in Roman numerals? ›

XXL is converted to a number in the following way: X is equivalent to 10 and L is equivalent to 50. X + X = 20. Since X is of lesser value than L and comes before the greater number, the rule is to subtract: 50 - 20 = 30. XXL = 30.

What is the trick of Roman numerals? ›

Here is a list of the basic rules for Roman numerals. Rule 1: When certain numerals are repeated, the number represented by them is their sum. For example, II = 1 + 1 = 2, or XX = 10 + 10 = 20, or, XXX = 10 + 10 + 10 = 30. Rule 3: The letters V, L, and D are not repeated.

What is z in Roman numerals? ›

Z, Symbol. the 26th in order or in a series, or, when I is omitted, the 25th. (sometimes l.c.) the medieval Roman numeral for 2000. Cf. Roman numerals.

What is the F in Roman numerals? ›

Some simply substitute another letter for the standard one (such as " A" for " V", or " Q" for " D"), while others serve as abbreviations for compound numerals (" O" for " XI", or " F" for " XL"). Although they are still listed today in some dictionaries, they are long out of use.

What is d in Roman numerals? ›

The number 500 in Roman Numerals is directly represented by the letter D. Hence, there is no method to perform addition or subtraction for D Roman Numerals. Thus, the numerical value of D Roman Numerals is 500.

What is XX in math? ›

We know that in roman numerals, we write 10 as X. Therefore, 20 in roman numerals is written as XX = 20.

What does K mean in Roman numerals? ›

Therefore we can definitely say that K is not a roman number. It is a letter that belongs to our alphabet and it is the abbreviation of Kilo, which in turn means to multiply a certain unit by 1000. So, a Kilogram means 1000 grams; a Kilometre means 1000 metres, and so on.

Is there a Roman numeral for 1 billion? ›

One Billion in English is technically a million-millions while in American it is a thousand-millions, which the British once called a Milliard, however the Milliard is not a common English word. 1,000,000,000 is in Roman numerals the capital letter M with two parallel lines inscribed above it.

What is the Roman numeral for a million? ›

If we wanted to denote millions, we would show that as MM. For this, we should credit the Romans. M is the Roman numeral for thousand and MM is meant to convey one thousand-thousand — or million. To take it further; one billion would be shown as $1MMM or one-thousand million.

What does c mean in Roman numerals? ›

We use the number 100 directly to denote the letter C. Hence, the numerical value of C Roman Numerals is 100.

How to do numbers in Roman numerals? ›

Basic principles
  1. I or j = 1.
  2. II or ij = 2 (1+1)
  3. III or iij = 3 (1+1+1)
  4. IIII or iiij or IV = 4 (1+1+1+1) or (5-1)
  5. V =5.
  6. VI or vj =6.
  7. VII or vij = 7 (5+1+1)
  8. VIII or viij = 8 (5+1+1+1)

How do you get Roman numerals on a keyboard? ›

Use I for 1, V for 5, X for 10, L for 50, C for 100, D for 500, and M for 1,000. Typing Roman numerals on a keyboard is very simple: You have all of the keys: I, V, X, L, and M. So, just type them!

How do you convert numbers to Roman numerals in Excel? ›

The syntax is as follows: ROMAN(number, [form]) - number: This is the number you want to convert into a Roman numeral. It should be between 1 and 3999. - form (optional): This parameter specifies the format of the Roman numeral. It can be set to 0, 1, 2, 3, or 4.

References

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