80 in Roman Numerals = LXXX
Eighty is written LXXX in Roman numerals. You read it left to right, adding each glyph in turn: L for 50, X for 10, X for 10, X for 10.
What is 80 in Roman numerals?
How LXXX is formed
Reading left to right, 80 breaks into these additive parts. Each Roman symbol is added in turn to reach the total.
L + X + X + X = 50 + 10 + 10 + 10 = 80.
The shape of LXXX
- Written out, LXXX runs 4 characters, against 5 for 79 (LXXIX) and 5 for 81 (LXXXI).
- No part of LXXX is subtractive: each glyph adds to the running total, so the numeral reads straight through from left to right.
- LXXX anchors its ten: the numerals from 80 to 89 all open with LXXX before their unit glyphs.
- LXXX draws on 2 of the seven symbols, with X doing the most work at 3 appearances.
- Among 80 to 89, 80 is the most compact: no other numeral in its ten gets down to 4 characters.
Where 80 in Roman numerals is used
- Outlines, exam questions and list items in formal documents.
Convert another number
80 is written LXXX in Roman numerals.
Frequently asked questions
How do you write 80 in Roman numerals?
Write 80 as LXXX, combining L + X + X + X. Start from the largest value that fits and work down until nothing is left over.
How is LXXX broken down?
LXXX breaks down as L (50), X (10), X (10), X (10), so L + X + X + X = 50 + 10 + 10 + 10 = 80.
What number is LXXX?
LXXX is 80. Read the symbols left to right, treat any smaller-before-larger pair as a single subtraction, and add the groups together.
Is there a shorter way to write 80?
No. LXXX is the standard, canonical spelling. Each value has exactly one correct Roman form, so LXXX is the only valid way to write 80.