Roman Numerals 1 to 100
The Chart, and the Rules Behind It

Most people who look this up want one thing: the list. So here it is first, and the reasoning afterwards for anyone who wants to stop looking it up.

Roman Numerals 1 to 100

The full roman numerals 1 to 100 chart. Read down each pair of columns: the number on the left, the numeral on the right.

That is the whole roman numerals chart for the first hundred. If you only ever need roman numerals 1 to 50, it is the left half of the same table. For anything past 100, the Roman Numerals Converter does it in one step. Everything in it is built from seven letters and a handful of rules, which is what the rest of this page is about.

The Seven Letters

The entire system is seven letters. There are no others, and these are the only roman numerals symbols there have ever been in standard use.

Notice the pattern: 1, 5, 10, 50, 100, 500, 1,000. It alternates one and five at every power of ten, which is why the system counts comfortably on fingers and hands and why it runs out of road so quickly at the top end.

How to Read One

Read left to right and add as you go. XXVII is 10 + 10 + 5 + 1 + 1 = 27. LXVI is 50 + 10 + 5 + 1 = 66. The letters are written largest first, so the running total only ever grows.

That covers most numerals you will meet. The one exception is when a smaller letter appears before a larger one, and that is the rule that causes nearly all the confusion.

The Only Six Subtractions

When a smaller letter sits directly in front of a larger one, it is subtracted instead of added. This is called subtractive notation, and it applies to exactly six pairs. Not seven, not "any smaller letter" — six.

The reason there are only six comes from two restrictions working together. Only I, X and C are ever subtracted — V, L and D never are. And each of those three may only be taken from the next two letters above it: I from V and X, X from L and C, C from D and M.

Which means a lot of shortcuts that look sensible are simply not valid:

• IL for 49 is wrong — I cannot be subtracted from L. 49 is XLIX, built as XL + IX.
• IC for 99 is wrong, for the same reason. 99 is XCIX.
• VX for 5 is wrong — V is never subtracted from anything. 5 is just V.
• XD for 490 is wrong — X may only be taken from L and C. 490 is CDXC.

If you remember nothing else about the roman numerals rules, remember that subtraction is a short list of six special cases, not a general technique.

What Repeats, and What Never Does

I, X, C and M may be repeated, up to three times in a row: III is 3, XXX is 30, CCC is 300, MMM is 3,000. The moment you would need a fourth, subtractive notation takes over instead — which is why 4 is IV rather than IIII, and 40 is XL rather than XXXX.

V, L and D are never repeated at all. There is no VV, because that is X. No LL, because that is C. No DD, because that is M. Each of them has a single-letter replacement waiting one step up, so a repeat would always be the longer way of writing the same thing.

Reading a Numeral Back

Half the time the question runs the other way. You are holding the numeral — a chapter heading, a date on a building, a film credit — and you want the number. The method is the one described above, read left to right, adding except where a smaller letter comes first.

Roman numerals VI is 5 + 1, so 6. Roman numerals XIV is 10 followed by IV, so 10 + 4 = 14 — not 10 + 1 + 5, which is the mistake that turns it into 16. Roman numeral XI is 10 + 1 = 11, and the letters in the other order, IX, mean 9 instead. That pair is worth staring at for a second: XI and IX use the same two letters and differ only in which comes first.

These are the ones people look up most often:

DCLXVI is a favourite of quiz setters because it uses six of the seven letters exactly once, in descending order: 500 + 100 + 50 + 10 + 5 + 1. Add an M in front and you have every letter, MDCLXVI, which is 1,666.

The Numbers People Look Up Most

A handful of numbers get searched far more than the rest, usually because they are the ones where the subtractive rule bites. Here they are together.

50 in roman numerals is L — a single letter, no combination needed, which is why it surprises people who expect something longer. 40 is XL, ten before fifty. 100 is C, from the Latin centum. And 49 is the classic trap: XLIX, not IL.

Asked the other way round: roman numerals of 100 is C, roman numerals of 40 is XL, and roman numerals of 400 is CD — the same hundred-before-five-hundred idea one power of ten up. In the twenties and thirties nothing clever happens at all: roman numerals 25 is XXV, roman numerals 30 is XXX, roman numerals 35 is XXXV. The subtractive rule only appears at 4, 9 and their multiples, which is why roman numerals 29 is XXIX and roman numerals 90 is XC.

Past the hundred mark the same seven letters keep working. These are the round numbers, including roman numerals 500 and 1000, and they run all the way to the ceiling:

A chart from roman numerals from 1 to 1000 would be a thousand rows of the same seven letters recombining, which is why a converter is the better tool once you are past the first hundred.

Why There Is No Zero

There is no Roman numeral for zero, and that is not an oversight. The system is additive: a numeral is a pile of values added together. A pile of nothing is written by writing nothing, so the question never came up. Roman arithmetic was done on a counting board, where an empty column said everything a zero would have said.

The idea of zero as a number — something you can calculate with rather than an empty space — reached Europe later, through Indian mathematics and Arabic scholarship, and it arrived with the digits we use today rather than with the Roman letters.

There is one genuine footnote, though. Medieval computists, the monks who calculated the date of Easter, did need a placeholder in their tables. They used the Latin word nulla, meaning "none". Dionysius Exiguus used it in 525, and around 725 Bede or a colleague wrote the single letter N, for nullae, in a table that was otherwise entirely Roman numerals. So if someone insists on an answer to roman number zero, the honest one is: the Romans had none, and the medieval N is the closest thing that ever existed.

Above 3,999

Standard notation stops at 3,999. To go further, a horizontal line called a vinculum is drawn over a numeral, and it multiplies that numeral by a thousand. A V with a bar over it is 5,000; an X with a bar is 10,000; an L with a bar is 50,000. A second bar multiplies by a million again, which in principle carries the system into the billions.

That is the answer to roman numerals of 5000: it is V with a line above it, not any arrangement of the plain seven letters. The Romans themselves also used an older method called the apostrophus, writing 1,000 as CIƆ and adding more C and Ɔ pairs around it to multiply by ten each time. Both notations are historical rather than everyday; modern use almost never goes past 3,999, which comfortably covers years, chapters, monarchs and Super Bowls.

Why Clocks Show IIII

Look at a clock face with Roman numerals and four is usually IIII, not IV — on a dial where every other numeral follows the standard rules. It is the most common Roman numeral question that has no single agreed answer, and several explanations are offered.

The one most often repeated is visual balance: IIII is a heavy, wide numeral, and it sits opposite VIII on the dial, which is also heavy and wide. IV would look thin against it. A second explanation is manufacturing — with IIII for four, a full dial needs twenty I, four V and four X, which divides neatly into moulds. A third is simply tradition, since IIII appears on sundials and early clocks and never stopped. There is also a story that IV was avoided because it opens the name of Jupiter, IVPPITER, though that one is repeated far more confidently than the evidence supports.

What is safe to say is that IIII on a clock is a convention of clockmaking, not a rule of the numeral system. In every other context, four is IV.

Quick Answers

What is 50 in roman numerals?

L. One letter. 40 is XL, 60 is LX, and 90 is XC.

What are roman numerals 1 to 100?

I through C. The full list is in the chart at the top of this page — 1 is I, 50 is L, 100 is C, and everything between is built from the same seven letters.

Why is 4 written IV and not IIII?

Because a letter may repeat at most three times, so IIII is one too many. IV means one before five. Clock faces are the well-known exception, and they are breaking the rule deliberately.

Is IL a valid way to write 49?

No. I may only be subtracted from V and X, never from L. 49 is XLIX — forty (XL) followed by nine (IX).

What is the biggest roman numeral?

In standard notation, 3,999, written MMMCMXCIX. Larger values need a bar over the numeral, which multiplies it by a thousand.

What is zero in roman numerals?

There isn’t one. The Romans had no zero symbol. Medieval scholars writing Easter tables used the Latin nulla, and Bede’s circle used the letter N for it around 725, but that never became part of the numeral system.

Which letters can be repeated?

I, X, C and M, up to three times. V, L and D are never repeated, because VV is X, LL is C and DD is M.

How do I write a year in roman numerals?

Break it into thousands, hundreds, tens and units and write each part in turn. 2026 is MM + XX + VI = MMXXVI. 1990 is M + CM + XC = MCMXC. Or paste the year into the converter and read it off.