At One Place

84 in Roman numerals

84 in Roman numerals
LXXXIV

84 is written LXXXIV in Roman numerals. That is 5 symbol groups added together, reading left to right from the largest value down.

How it breaks down

LXXXIV = 50 + 10 + 10 + 10 + 4 = 84
Group Value Subtraction Running total
L 50 — 50
X 10 — 60
X 10 — 70
X 10 — 80
IV 4 V − I 84

Why the smaller symbol comes first

LXXXIV uses subtractive notation in one place: IV means V minus I, or 4. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

The symbols

Symbol Value Used here
I 1 yes — 1×
V 5 yes — 1×
X 10 yes — 3×
L 50 yes — 1×
C 100 no
D 500 no
M 1,000 no

The same number, other ways

In words
Eighty-four
Roman numeral
LXXXIV
Symbol count
6 characters
Binary
1010100
Hexadecimal
54

The numbers either side

Number Roman numeral
82 LXXXII
83 LXXXIII
84 LXXXIV ←
85 LXXXV
86 LXXXVI

Common questions

What is 84 in Roman numerals?
84 is LXXXIV.
What does LXXXIV mean?
LXXXIV is the Roman numeral for 84 — 50 + 10 + 10 + 10 + 4.
How do you write 84 in Roman numerals?
Take the largest value that fits and repeat until nothing is left: L (50), then X (10), then X (10), then X (10), then IV (4). That gives LXXXIV.

Related pages

Sources

  1. Calculated on this page — At One Place

How these figures are compiled and checked