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Roman Numeral Converter

Convert a number to Roman numerals and vice versa.

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Frequently Asked Questions

What is the maximum number I can convert to Roman numerals?
Our Roman Numeral Converter can handle numbers from 1 to 3999. This limitation exists because traditional Roman numerals don't have standard representations for numbers beyond 3999.
Are there any invalid Roman numeral combinations?
Yes, certain combinations are invalid in Roman numerals. For example, you cannot have more than three of the same numeral in a row (e.g., IIII is invalid for 4, which should be IV). Also, V, L, and D cannot be repeated.
How do I convert Roman numerals with subtractive notation?
Subtractive notation is used in Roman numerals to avoid repeating the same symbol four times. For example, 4 is written as IV (5-1) instead of IIII, and 90 is written as XC (100-10) instead of LXXXX. Our converter automatically handles these cases correctly.
Can I use lowercase letters for Roman numerals?
Yes, our converter accepts both uppercase and lowercase letters. It will automatically convert lowercase letters to uppercase for processing. For example, "xiv" will be converted to "XIV" which equals 14.
Is this Roman numeral converter free to use?
Yes, our Roman Numeral Converter is completely free to use with no limitations. There's no registration required, and you can use it as many times as you need without any cost.

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