1943 in Roman numerals at a glance
- Roman numeral
- MCMXLIII
- Lowercase
- mcmxliii
- Letters
- 8
- Parts
- M · CM · XL · I · I · I
- Subtractive pairs
- CM, XL
- Read aloud
- nineteen forty-three
- Leap year?
- No
How MCMXLIII is built
Roman numerals are written one decimal place at a time, from the largest place to the smallest. Converting each digit of 1943 separately and joining the pieces gives MCMXLIII:
| Place | Digit | Value | Numeral |
|---|---|---|---|
| Thousands | 1 | 1,000 | M |
| Hundreds | 9 | 900 | CM |
| Tens | 4 | 40 | XL |
| Ones | 3 | 3 | III |
Reading it back, left to right:
- M = 1,000 → running total 1,000
- CM = 900 (M minus C) → running total 1,900
- XL = 40 (L minus X) → running total 1,940
- I = 1 → running total 1,941
- I = 1 → running total 1,942
- I = 1 → running total 1,943
Why MCMXLIII has 8 letters
Every year from 1900 to 1999 begins with MCM (1,900); the rest of MCMXLIII after MCM — XLIII — spells out 43. Of the 201 years from 1900 to 2100, 22 have a longer numeral and 147 a shorter one.
The rules MCMXLIII follows
- Largest to smallest. MCMXLIII uses the symbols M, C, X, L and I (8 characters in all), and the values never increase from left to right except inside a subtractive pair.
- Subtraction. CM (900) and XL (40) are subtractive pairs: a smaller symbol in front of a larger one is taken away from it. Only six pairs are allowed — IV, IX, XL, XC, CD and CM — and MCMXLIII uses two of them.
- Repetition. III repeats I three times. I, X, C and M may repeat up to three times in a row; V, L and D never repeat.
Common mistakes when writing 1943
- MDCCCCXLIII — wrong because standard numerals never repeat a symbol four times; 900 is written CM. The correct form is MCMXLIII.
- MCMXXXXIII — wrong because standard numerals never repeat a symbol four times; 40 is written XL. The correct form is MCMXLIII.
The year 1943 in Roman numerals: where it appears
- Cornerstones and public buildings. Buildings, bridges and monuments from the early 20th century often have their completion year carved as a numeral, so MCMXLIII may be cut into a date stone or lintel from 1943.
- On a calendar. 1943 was not a leap year (365 days), and January 1 fell on a Friday. A full date such as July 4, 1943 is often written VII · IV · MCMXLIII.
To turn a complete birth date or wedding date into numerals — with dots, dashes or spaces in US or day-first order — use the Roman numeral date converter.
Years around 1943 in Roman numerals
| Year | Roman numeral | Letters |
|---|---|---|
| 1938 | MCMXXXVIII | 10 |
| 1939 | MCMXXXIX | 8 |
| 1940 | MCMXL | 5 |
| 1941 | MCMXLI | 6 |
| 1942 | MCMXLII | 7 |
| 1943 | MCMXLIII | 8 |
| 1944 | MCMXLIV | 7 |
| 1945 | MCMXLV | 6 |
| 1946 | MCMXLVI | 7 |
| 1947 | MCMXLVII | 8 |
| 1948 | MCMXLVIII | 9 |
Frequently asked questions
How do you write 1943 in Roman numerals?
1943 is written MCMXLIII. Break it into M (1000), CM (900), XL (40), I (1), I (1), I (1) and add the parts: 1000 + 900 + 40 + 1 + 1 + 1 = 1943.
Is MDCCCCXLIII a correct way to write 1943?
No. MDCCCCXLIII is wrong because standard numerals never repeat a symbol four times; 900 is written CM. The standard numeral for 1943 is MCMXLIII.
How do you say MCMXLIII?
Read the value, not the letters: MCMXLIII is the year 1943, said “nineteen forty-three.” Spelling out the letters one by one is only useful when checking a carving or engraving.
What year comes after MCMXLIII?
1944, written MCMXLIV. The year before, 1942, is MCMXLII.