84 in Roman Numerals = LXXXIV
Eighty-four is written LXXXIV in Roman numerals. The subtractive rule works once in LXXXIV, in IV for 4: a smaller glyph placed before a larger one is taken away rather than added, which keeps LXXXIV shorter than stacking strokes would.
What is 84 in Roman numerals?
How LXXXIV is formed
Reading left to right, 84 breaks into these additive parts. Each Roman symbol is added in turn to reach the total.
L + X + X + X + IV = 50 + 10 + 10 + 10 + 4 = 84.
The shape of LXXXIV
- Written out, LXXXIV runs 6 characters, against 7 for 83 (LXXXIII) and 5 for 85 (LXXXV).
- One pair inside LXXXIV is subtractive: IV makes 4 by putting the smaller glyph first. The rest of the numeral is plain addition.
- 84 sits in the LXXX band: every numeral from 80 to 89 opens with LXXX, and the IV after it carries the last 4.
- LXXXIV draws on 4 of the seven symbols, with X doing the most work at 3 appearances.
Where 84 in Roman numerals is used
- Outlines, exam questions and list items in formal documents.
Convert another number
84 is written LXXXIV in Roman numerals.
Frequently asked questions
How do you write 84 in Roman numerals?
Write 84 as LXXXIV, combining L + X + X + X + IV. Start from the largest value that fits and work down until nothing is left over.
Why is 84 not written LXXXIIII?
LXXXIV uses the subtractive rule: a smaller symbol placed before a larger one is taken away, so you never repeat a symbol four times. LXXXIIII breaks that rule, which is why LXXXIV is the only correct form.
What are 83 and 85 in Roman numerals?
83 is LXXXIII and 85 is LXXXV. Neighbouring numbers often change length in surprising ways, which is why each has its own page.
How is LXXXIV broken down?
LXXXIV breaks down as L (50), X (10), X (10), X (10), IV (4), so L + X + X + X + IV = 50 + 10 + 10 + 10 + 4 = 84.