1970 in Roman numerals at a glance
- Roman numeral
- MCMLXX
- Lowercase
- mcmlxx
- Letters
- 6
- Parts
- M · CM · L · X · X
- Subtractive pairs
- CM
- Read aloud
- nineteen seventy
- Leap year?
- No
How MCMLXX is built
Roman numerals are written one decimal place at a time, from the largest place to the smallest. Converting each digit of 1970 separately and joining the pieces gives MCMLXX:
| Place | Digit | Value | Numeral |
|---|---|---|---|
| Thousands | 1 | 1,000 | M |
| Hundreds | 9 | 900 | CM |
| Tens | 7 | 70 | LXX |
| Ones | 0 | 0 | — (zero has no symbol) |
Reading it back, left to right:
- M = 1,000 → running total 1,000
- CM = 900 (M minus C) → running total 1,900
- L = 50 → running total 1,950
- X = 10 → running total 1,960
- X = 10 → running total 1,970
Why MCMLXX has 6 letters
Every year from 1900 to 1999 begins with MCM (1,900); the rest of MCMLXX after MCM — LXX — spells out 70. Of the 201 years from 1900 to 2100, 100 have a longer numeral and 55 a shorter one.
The rules MCMLXX follows
- Largest to smallest. MCMLXX uses the symbols M, C, L and X (6 characters in all), and the values never increase from left to right except inside a subtractive pair.
- Subtraction. CM (900) is a subtractive pair: 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 MCMLXX uses one of them.
- Repetition. XX repeats X two 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 1970
- MDCCCCLXX — wrong because standard numerals never repeat a symbol four times; 900 is written CM. The correct form is MCMLXX.
The year 1970 in Roman numerals: where it appears
- Film and TV credits. Copyright lines at the end of films and TV programs of the period commonly gave the year in numerals — a 1970 production might end with “Copyright MCMLXX.”
- Championship numbering. The pro football championship played in early 1970 was game IV (4), since the series began with game I in January 1967.
- On a calendar. 1970 was not a leap year (365 days), and January 1 fell on a Thursday. A full date such as July 4, 1970 is often written VII · IV · MCMLXX.
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 1970 in Roman numerals
| Year | Roman numeral | Letters |
|---|---|---|
| 1965 | MCMLXV | 6 |
| 1966 | MCMLXVI | 7 |
| 1967 | MCMLXVII | 8 |
| 1968 | MCMLXVIII | 9 |
| 1969 | MCMLXIX | 7 |
| 1970 | MCMLXX | 6 |
| 1971 | MCMLXXI | 7 |
| 1972 | MCMLXXII | 8 |
| 1973 | MCMLXXIII | 9 |
| 1974 | MCMLXXIV | 8 |
| 1975 | MCMLXXV | 7 |
Frequently asked questions
How do you write 1970 in Roman numerals?
1970 is written MCMLXX. Break it into M (1000), CM (900), L (50), X (10), X (10) and add the parts: 1000 + 900 + 50 + 10 + 10 = 1970.
Is MDCCCCLXX a correct way to write 1970?
No. MDCCCCLXX is wrong because standard numerals never repeat a symbol four times; 900 is written CM. The standard numeral for 1970 is MCMLXX.
How do you say MCMLXX?
Read the value, not the letters: MCMLXX is the year 1970, said “nineteen seventy.” Spelling out the letters one by one is only useful when checking a carving or engraving.
What year comes after MCMLXX?
1971, written MCMLXXI. The year before, 1969, is MCMLXIX.