🏛️Roman Numeral Converter
Convert between Roman numerals and decimal numbers.
Quick Reference
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
IV
4
IX
9
XL
40
XC
90
CD
400
CM
900
MMXXVI
2026
MMMCMXCIX
3999
Related Math Tools
➗🧮⚖️🎂🏦📈
Percentage Calculator
Calculate percentages, percentage change, and percentage differences.
Scientific Calculator
A full-featured scientific calculator with advanced math functions.
BMI Calculator
Calculate your Body Mass Index and see your health category.
Age Calculator
Calculate exact age in years, months, and days from a birthdate.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedules.
Compound Interest Calculator
Calculate compound interest with customizable rates and periods.