You may have seen those funky Roman numerals on old clocks and historic monuments, but have you ever wondered how high they go? Well, wonder no more! This handy guide will walk you through the Roman numerals all the way from I to D, which range from 1 to 500. We’ll start with the basics, like how V is 5, and X is 10. Then we’ll pick up the pace and march through the centuries, from C for 100 all the way to the big D for 500. Before you know it, you’ll be reading Roman numerals like the great Julius Caesar himself.
What is the Roman Numeral?
The Roman numeral system originated in ancient Rome and was used throughout the Roman Kingdom, Republic, and Empire. Roman numerals use letters to represent numbers. It’s a decimal system based on seven symbols:
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000.
Specifically, the Etruscan number symbols for 1, 5, 10, 50, and 100 are ⟨𐌠⟩, ⟨𐌡⟩, ⟨𐌢⟩, ⟨𐌣⟩, for the Roman numerals. They had other symbols for bigger numbers, but it is unclear which sign corresponds to which number. The Etruscans wrote the symbols that summed to the desired number, from higher to lower value, just like in the fundamental Roman method. Hence, for instance, the number 87 would be written as follows: 50 + 10 + 10 + 10 + 5 + 1 + 1 = 𐌣𐌢𐌢𐌢𐌡𐌠𐌠 (this would appear as 𐌠𐌠𐌡𐌢𐌢𐌢𐌣 since Etruscan was written from right to left.).
The modern style uses only these seven:
I | V | X | L | C | D | M |
---|---|---|---|---|---|---|
1 | 5 | 10 | 50 | 100 | 500 | 1000 |
How to Read and Write Roman Numerals
Roman numerals follow a simple set of rules for addition and subtraction. When a smaller value numeral precedes a larger one, it is added. For example, III is 3, VI is 6 (V+I), and XVIII is 18 (X+V+I+I+I). When a smaller value numeral follows a larger one, it is subtracted. For example, IV is 4 (V-I), IX is 9 (X-I) and XL is 40 (L-X).
Numbers larger than 10, you simply chain together the numeral symbols. For example, XX is 20, LX is 60 (L+X), CC is 200 (C+C), and MMM is 3,000 (M+M+M).
It is quite easy to read and write Roman numerals when you follow these rules:
Learn the numeral symbols
The first step is to familiarize yourself with the letters used to represent numbers in the Roman numeral system:
I = 1 V = 5
X = 10 L = 50 C = 100 D = 500 M = 1000
These letters are combined to represent larger numbers. For example, VI = 6, XII = 12, LX = 60.
Understand subtraction
Roman numerals follow the subtractive principle. When a numeral of smaller value precedes a numeral of greater value, the smaller value is subtracted from the larger value. For example:
IV = 5 – 1 = 4 IX = 10 – 1 = 9 XL = 50 – 10 = 40 XC = 100 – 10 = 90
This is done to avoid repeating too many numerals of the same value.
The Basic Symbols
The basic symbols in the Roman numeral system are:
I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000
Combining Numerals
Roman numerals are additive – simply combine the numerals to get the desired value. For example, II is 2 (1 + 1), III is 3 (1 + 1 + 1), and XV is 15 (10 + 5).
Know the rules for combining numerals
When combining numerals, follow these rules:
- Repeat a numeral up to three times: e.g., III = 3. Repeating a numeral up to three times represents the addition of that value. IV is 4 (5-1)
- The tens (X, L, and C) can only be subtracted from the hundreds (C and M).
- The fives (V and L) can only be subtracted from the tens (X and C).
- The ones (I) can be subtracted from the fives (V and L) and tens (X).
- Numerals are additive when they are listed from largest to smallest value. For example: XLVIII = 50 + 4 + 5 – 2 = 48.
- The subtractive principle applies only when a lower-value numeral directly precedes a higher-value numeral. For example, XC is 90 (100-10), but CX is not 60.
- The numeral I can be subtracted from V and X only. X and C can be subtracted from L and D only.
- The numeral M cannot be subtracted.
- When subtracting, the first numeral indicates the total. For example, XLIX is 49 (50-1), not 40+9.
Practice converting to and from Roman numerals
The best way to learn the Roman numeral system is to practice converting numbers between the Roman numeral and decimal systems. Start with simple single-digit numbers, then progress to tens, hundreds, and beyond. With regular practice, Roman numerals will become second nature.
List of Roman Numerals 1 to 500
The Roman numeral system was developed in ancient Rome and used for counting and keeping track of quantities. The system is still used today, though primarily for decorative and ceremonial purposes. The numerals are based on combinations of the letters ‘I,’ ‘V,’ ‘X,’ ‘L,’ ‘C,’ ‘D,’ and ‘M.’
Roman Numerals 1 to 100
The numbers 1 through 100 in Roman numerals are I, II, III, IV, V, VI, VII, VIII, IX, and X. These are the basic single-digit numbers. As the numbers get larger, you start combining these single digits. For example, XI is 11, XII is 12, XX is 20, XXX is 30, and so on, up to C, which is 100.
1 = I | 21 = XXI | 41 = XLI | 61 = LXI | 81 = LXXXI |
---|---|---|---|---|
2 = II | 22 = XXII | 42 = XLII | 62 = LXII | 82 = LXXXII |
3 = III | 23 = XXIII | 43 = XLIII | 63 = LXIII | 83 = LXXXIII |
4 = IV | 24 = XXIV | 44 = XLIV | 64 = LXIV | 84 = LXXXIV |
5 = V | 25 = XXV | 45 = XLV | 65 = LXV | 85 = LXXXV |
6 = VI | 26 = XXVI | 46 = XLVI | 66 = LXVI | 86 = LXXXVI |
7 = VII | 27 = XXVII | 47 = XLVII | 67 = LXVII | 87 = LXXXVII |
8 = VIII | 28 = XXVIII | 48 = XLVIII | 68 = LXVIII | 88 = LXXXVIII |
9 = IX | 29 = XXIX | 49 = XLIX | 69 = LXIX | 89 = LXXXIX |
10 = X | 30 = XXX | 50 = L | 70 = LXX | 90 = XC |
11 = XI | 31 = XXXI | 51 = LI | 71 = LXXI | 91 = XCI |
12 = XII | 32 = XXXII | 52 = LII | 72 = LXXII | 92 = XCII |
13 = XIII | 33 = XXXIII | 53 = LIII | 73 = LXXIII | 93 = XCIII |
14 = XIV | 34 = XXXIV | 54 = LIV | 74 = LXXIV | 94 = XCIV |
15 = XV | 35 = XXXV | 55 = LV | 75 = LXXV | 95 = XCV |
16 = XVI | 36 = XXXVI | 56 = LVI | 76 = LXXVI | 96 = XCVI |
17 = XVII | 37 = XXXVII | 57 = LVII | 77 = LXXVII | 97 = XCVII |
18 = XVIII | 38 = XXXVIII | 58 = LVIII | 78 = LXXVIII | 98 = XCVIII |
19 = XIX | 39 = XXXIX | 59 = LIX | 79 = LXXIX | 99 = XCIX |
20 = XX | 40 = XL | 60 = LX | 80 = LXXX | 100 = C |
Roman Numerals 101 to 200
For the hundreds, you use the letter C. So 101 would be CI, 102 would be CII, and up to 199 would be CXCIX. 200 is CC.
101 = CI | 121 = CXXI | 141 = CXLI | 161 = CLXI | 181 = CLXXXI |
---|---|---|---|---|
102 = CII | 122 = CXXII | 142 = CXLII | 162 = CLXII | 182 = CLXXXII |
103 = CIII | 123 = CXXIII | 143 = CXLIII | 163 = CLXIII | 183 = CLXXXIII |
104 = CIV | 124 = CXXIV | 144 = CXLIV | 164 = CLXIV | 184 = CLXXXIV |
105 = CV | 125 = CXXV | 145 = CXLV | 165 = CLXV | 185 = CLXXXV |
106 = CVI | 126 = CXXVI | 146 = CXLVI | 166 = CLXVI | 186 = CLXXXVI |
107 = CVII | 127 = CXXVII | 147 = CXLVII | 167 = CLXVII | 187 = CLXXXVII |
108 = CVIII | 128 = CXXVIII | 148 = CXLVIII | 168 = CLXVIII | 188 = CLXXXVIII |
109 = CIX | 129 = CXXIX | 149 = CXLIX | 169 = CLXIX | 189 = CLXXXIX |
110 = CX | 130 = CXXX | 150 = CL | 170 = CLXX | 190 = CXC |
111 = CXI | 131 = CXXXI | 151 = CLI | 171 = CLXXI | 191 = CXCI |
112 = CXII | 132 = CXXXII | 152 = CLII | 172 = CLXXII | 192 = CXCII |
113 = CXIII | 133 = CXXXIII | 153 = CLIII | 173 = CLXXIII | 193 = CXCIII |
114 = CXIV | 134 = CXXXIV | 154 = CLIV | 174 = CLXXIV | 194 = CXCIV |
115 = CXV | 135 = CXXXV | 155 = CLV | 175 = CLXXV | 195 = CXCV |
116 = CXVI | 136 = CXXXVI | 156 = CLVI | 176 = CLXXVI | 196 = CXCVI |
117 = CXVII | 137 = CXXXVII | 157 = CLVII | 177 = CLXXVII | 197 = CXCVII |
118 = CXVIII | 138 = CXXXVIII | 158 = CLVIII | 178 = CLXXVIII | 198 = CXCVIII |
119 = CXIX | 139 = CXXXIX | 159 = CLIX | 179 = CLXXIX | 199 = CXCIX |
120 = CXX | 140 = CXL | 160 = CLX | 180 = CLXXX | 200 = CC |
Roman Numerals 201 – 300
In the 200s, you combine C with the tens digits. So 201 is CCI, 220 is CCXX, 250 is CCL, 299 is CCXCIX, and 300 is CCC.
201 = CCI | 221 = CCXXI | 241 = CCXLI | 261 = CCLXI | 281 = CCLXXXI |
---|---|---|---|---|
202 = CCII | 222 = CCXXII | 242 = CCXLII | 262 = CCLXII | 282 = CCLXXXII |
203 = CCIII | 223 = CCXXIII | 243 = CCXLIII | 263 = CCLXIII | 283 = CCLXXXIII |
204 = CCIV | 224 = CCXXIV | 244 = CCXLIV | 264 = CCLXIV | 284 = CCLXXXIV |
205 = CCV | 225 = CCXXV | 245 = CCXLV | 265 = CCLXV | 285 = CCLXXXV |
206 = CCVI | 226 = CCXXVI | 246 = CCXLVI | 266 = CCLXVI | 286 = CCLXXXVI |
207 = CCVII | 227 = CCXXVII | 247 = CCXLVII | 267 = CCLXVII | 287 = CCLXXXVII |
208 = CCVIII | 228 = CCXXVIII | 248 = CCXLVIII | 268 = CCLXVIII | 288 = CCLXXXVIII |
209 = CCIX | 229 = CCXXIX | 249 = CCXLIX | 269 = CCLXIX | 289 = CCLXXXIX |
210 = CCX | 230 = CCXXX | 250 = CCL | 270 = CCLXX | 290 = CCXC |
211 = CCXI | 231 = CCXXXI | 251 = CCLI | 271 = CCLXXI | 291 = CCXCI |
212 = CCXII | 232 = CCXXXII | 252 = CCLII | 272 = CCLXXII | 292 = CCXCII |
213 = CCXIII | 233 = CCXXXIII | 253 = CCLIII | 273 = CCLXXIII | 293 = CCXCIII |
214 = CCXIV | 234 = CCXXXIV | 254 = CCLIV | 274 = CCLXXIV | 294 = CCXCIV |
215 = CCXV | 235 = CCXXXV | 255 = CCLV | 275 = CCLXXV | 295 = CCXCV |
216 = CCXVI | 236 = CCXXXVI | 256 = CCLVI | 276 = CCLXXVI | 296 = CCXCVI |
217 = CCXVII | 237 = CCXXXVII | 257 = CCLVII | 277 = CCLXXVII | 297 = CCXCVII |
218 = CCXVIII | 238 = CCXXXVIII | 258 = CCLVIII | 278 = CCLXXVIII | 298 = CCXCVIII |
219 = CCXIX | 239 = CCXXXIX | 259 = CCLIX | 279 = CCLXXIX | 299 = CCXCIX |
220 = CCXX | 240 = CCXL | 260 = CCLX | 280 = CCLXXX | 300 = CCC |
Roman Numerals 301 – 400
For the 300s, you start with CCCI for 301 and go up to CCCXCIV for 394. Then, at 400, you introduce a new symbol, CD, for 400.
301 = CCCI | 321 = CCCXXI | 341 = CCCXLI | 361 = CCCLXI | 381 = CCCLXXXI |
---|---|---|---|---|
302 = CCCII | 322 = CCCXXII | 342 = CCCXLII | 362 = CCCLXII | 382 = CCCLXXXII |
303 = CCCIII | 323 = CCCXXIII | 343 = CCCXLIII | 363 = CCCLXIII | 383 = CCCLXXXIII |
304 = CCCIV | 324 = CCCXXIV | 344 = CCCXLIV | 364 = CCCLXIV | 384 = CCCLXXXIV |
305 = CCCV | 325 = CCCXXV | 345 = CCCXLV | 365 = CCCLXV | 385 = CCCLXXXV |
306 = CCCVI | 326 = CCCXXVI | 346 = CCCXLVI | 366 = CCCLXVI | 386 = CCCLXXXVI |
307 = CCCVII | 327 = CCCXXVII | 347 = CCCXLVII | 367 = CCCLXVII | 387 = CCCLXXXVII |
308 = CCCVIII | 328 = CCCXXVIII | 348 = CCCXLVIII | 368 = CCCLXVIII | 388 = CCCLXXXVIII |
309 = CCCIX | 329 = CCCXXIX | 349 = CCCXLIX | 369 = CCCLXIX | 389 = CCCLXXXIX |
310 = CCCX | 330 = CCCXXX | 350 = CCCL | 370 = CCCLXX | 390 = CCCXC |
311 = CCCXI | 331 = CCCXXXI | 351 = CCCLI | 371 = CCCLXXI | 391 = CCCXCI |
312 = CCCXII | 332 = CCCXXXII | 352 = CCCLII | 372 = CCCLXXII | 392 = CCCXCII |
313 = CCCXIII | 333 = CCCXXXIII | 353 = CCCLIII | 373 = CCCLXXIII | 393 = CCCXCIII |
314 = CCCXIV | 334 = CCCXXXIV | 354 = CCCLIV | 374 = CCCLXXIV | 394 = CCCXCIV |
315 = CCCXV | 335 = CCCXXXV | 355 = CCCLV | 375 = CCCLXXV | 395 = CCCXCV |
316 = CCCXVI | 336 = CCCXXXVI | 356 = CCCLVI | 376 = CCCLXXVI | 396 = CCCXCVI |
317 = CCCXVII | 337 = CCCXXXVII | 357 = CCCLVII | 377 = CCCLXXVII | 397 = CCCXCVII |
318 = CCCXVIII | 338 = CCCXXXVIII | 358 = CCCLVIII | 378 = CCCLXXVIII | 398 = CCCXCVIII |
319 = CCCXIX | 339 = CCCXXXIX | 359 = CCCLIX | 379 = CCCLXXIX | 399 = CCCXCIX |
320 = CCCXX | 340 = CCCXL | 360 = CCCLX | 380 = CCCLXXX | 400 = CD |
Roman Numerals 401 – 500
In the 400s, you subtract 100 from the number, and that is the numeral. So 401 would be CDI, 420 would be CDXX, 450 would be CDL, and 499 would be CDXCIX. Finally, at 500, you reach D, which stands for 500.
401 = CDI | 421 = CDXXI | 441 = CDXLI | 461 = CDLXI | 481 = CDLXXXI |
---|---|---|---|---|
402 = CDII | 422 = CDXXII | 442 = CDXLII | 462 = CDLXII | 482 = CDLXXXII |
403 = CDIII | 423 = CDXXIII | 443 = CDXLIII | 463 = CDLXIII | 483 = CDLXXXIII |
404 = CDIV | 424 = CDXXIV | 444 = CDXLIV | 464 = CDLXIV | 484 = CDLXXXIV |
405 = CDV | 425 = CDXXV | 445 = CDXLV | 465 = CDLXV | 485 = CDLXXXV |
406 = CDVI | 426 = CDXXVI | 446 = CDXLVI | 466 = CDLXVI | 486 = CDLXXXVI |
407 = CDVII | 427 = CDXXVII | 447 = CDXLVII | 467 = CDLXVII | 487 = CDLXXXVII |
408 = CDVIII | 428 = CDXXVIII | 448 = CDXLVIII | 468 = CDLXVIII | 488 = CDLXXXVIII |
409 = CDIX | 429 = CDXXIX | 449 = CDXLIX | 469 = CDLXIX | 489 = CDLXXXIX |
410 = CDX | 430 = CDXXX | 450 = CDL | 470 = CDLXX | 490 = CDXC |
411 = CDXI | 431 = CDXXXI | 451 = CDLI | 471 = CDLXXI | 491 = CDXCI |
412 = CDXII | 432 = CDXXXII | 452 = CDLII | 472 = CDLXXII | 492 = CDXCII |
413 = CDXIII | 433 = CDXXXIII | 453 = CDLIII | 473 = CDLXXIII | 493 = CDXCIII |
414 = CDXIV | 434 = CDXXXIV | 454 = CDLIV | 474 = CDLXXIV | 494 = CDXCIV |
415 = CDXV | 435 = CDXXXV | 455 = CDLV | 475 = CDLXXV | 495 = CDXCV |
416 = CDXVI | 436 = CDXXXVI | 456 = CDLVI | 476 = CDLXXVI | 496 = CDXCVI |
417 = CDXVII | 437 = CDXXXVII | 457 = CDLVII | 477 = CDLXXVII | 497 = CDXCVII |
418 = CDXVIII | 438 = CDXXXVIII | 458 = CDLVIII | 478 = CDLXXVIII | 498 = CDXCVIII |
419 = CDXIX | 439 = CDXXXIX | 459 = CDLIX | 479 = CDLXXIX | 499 = CDXCIX |
420 = CDXX | 440 = CDXL | 460 = CDLX | 480 = CDLXXX | 500 = D |
To convert numbers greater than 500, you continue using the subtractive principle, combining the numeral for 500 (D) with the hundreds, tens and ones. For example, 623 would be DCXXIII. 987 would be CMLXXXVII.
Roman Numbers 1 to 500 Chart
Using this chart, you should now be able to figure out any Roman numeral between 1 and 500.
How did the Romans come up with their numeral system?
The Romans developed their numeral system based on an earlier Etruscan system. They originally used pebbles to represent numbers, which later evolved into the letters I for 1, V for 5, X for 10, L for 50, C for 100, D for 500, and M for 1,000. By combining these letters in different ways, the Romans were able to represent increasingly larger numbers. This system was particularly useful for commerce, bookkeeping, and other applications where Arabic numerals are used today.
Why did the Romans use letters instead of the Hindu-Arabic numeral system?
The Hindu-Arabic numeral system (the numbers 0 through 9 we use today) actually originated in India and was adopted by the Arabic world before spreading to Europe. This system did not reach the Romans during the height of their civilization. The Romans likely used letters instead of digits because their alphabet also represented numbers well. The Hindu-Arabic system was more efficient, but the Roman numeral system was deeply entrenched during the Roman Empire, so it endured for many centuries before being replaced.
Conclusion
In the end, while Roman numerals may seem complicated at first, they are a simple yet elegant numeral system. Refer to this guide anytime you get stuck to refresh your memory. With the rules and practice techniques outlined here, you’ll be reading and writing Roman numerals with confidence in no time.
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