Convert numbers to Roman numerals and Roman numerals to numbers instantly. Supports values from 1 to 3,999 with real-time conversion and a handy reference chart.
Numbers above 3,999 use vinculum (overline) notation
I
1
V
5
X
10
L
50
C
100
D
500
M
1,000
A bar (overline) over a Roman numeral multiplies its value by 1,000. This extends the system from 3,999 up to 3,999,999.
IV
4,000
V
5,000
IX
9,000
X
10,000
L
50,000
C
100,000
D
500,000
M
1,000,000
Convert between decimal numbers and Roman numerals instantly. Supports standard numerals (1–3,999) and extended vinculum (overline) notation for numbers up to 3,999,999.
All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.
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