179 in Roman Numerals
One hundred seventy-nine is written CLXXIX in Roman numerals. It uses the subtractive rule, where a smaller glyph placed before a larger one is taken away rather than added, which keeps the numeral short and is the part most people find fiddly.
How CLXXIX is formed
Reading left to right, 179 breaks into these additive parts. Each Roman symbol is added in turn to reach the total.
C + L + X + X + IX = 100 + 50 + 10 + 10 + 9 = 179.
Where 179 in Roman numerals is used
- Monarch and pope names, for example the 179th of a royal line.
Convert another number
179 is written CLXXIX in Roman numerals.
Frequently asked questions
How do you write 179 in Roman numerals?
Write 179 as CLXXIX, combining C + L + X + X + IX. Start from the largest value that fits and work down until nothing is left over.
Why is 179 not written CLXXVIIII?
CLXXIX uses the subtractive rule: a smaller symbol placed before a larger one is taken away, so you never repeat a symbol four times. CLXXVIIII breaks that rule, which is why CLXXIX is the only correct form.
What are 178 and 180 in Roman numerals?
178 is CLXXVIII and 180 is CLXXX. Neighbouring numbers often change length in surprising ways, which is why each has its own page.
How is CLXXIX broken down?
CLXXIX breaks down as C (100), L (50), X (10), X (10), IX (9), so C + L + X + X + IX = 100 + 50 + 10 + 10 + 9 = 179.