Roman Numeral Converter
Convert between Roman numerals and decimal numbers.
Roman numerals can represent numbers between 1 and 3999.
Roman Numeral Converter & Ancient Number System
Convert between Roman numerals and decimal numbers with historical context and educational insights. Perfect for students, historians, and anyone working with classical numbering systems.
Bidirectional Conversion
Convert seamlessly between Roman numerals and decimal numbers with instant validation.
Rule Validation
Automatic validation of Roman numeral rules including subtractive notation and repetition limits.
Educational Context
Learn about Roman numeral history, rules, and modern applications with detailed explanations.
Educational & Professional Uses
- Academic Learning
Study ancient Roman mathematics and number systems in history classes
- Publishing & Typography
Format book chapters, volumes, and formal document numbering
- Historical Research
Decode dates and numbers in historical documents and inscriptions
- Design & Architecture
Create classical designs with authentic Roman numeral elements
Roman Numeral Symbols
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
Standard range: 1 to 3999 (I to MMMCMXCIX)
🏛️ Roman Numeral Best Practices
• Follow subtractive notation rules
Use IV for 4, not IIII
• Limit symbol repetition
Maximum three consecutive symbols
• Use uppercase consistently
Standard convention for formal use
• Understand historical context
Rules evolved over centuries