64 = LXIV
64 in Roman numerals is LXIV.
Sixty-four written with the letters L X I V.
64 in words: Sixty-four
Sixty-four in Roman numerals is LXIV. You build it as LX (60) + IV (4), writing the larger part first and reading left to right.
Notice the subtractive pair in LXIV: a smaller symbol sits before a larger one to save writing four identical letters in a row. This is the single rule that trips most people up, and once it clicks the rest of the system is straightforward.
How 64 breaks down
Reading LXIV from left to right, each group is added together to reach 64:
| Group | Value | Place |
|---|---|---|
| LX | 60 | tens |
| IV | 4 | ones |
| LXIV | 64 | total |
Frequently asked questions
What is 64 in Roman numerals?
64 in Roman numerals is LXIV.
How do you write 64 in words?
64 is written "Sixty-four" in English.
What number comes before LXIV?
The number before LXIV is 63, written LXIII in Roman numerals.
What number comes after LXIV?
The number after LXIV is 65, written LXV in Roman numerals.
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Last updated July 22, 2026. Reviewed for accuracy against the standard rules for Roman numerals.