Roman Numeral Conversion Table — 1 to 3999

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Overview

A complete reference table for Roman numeral conversions, covering all key values from 1 to 3999 with the subtractive notation rules explained.

Additive: combine values | Subtractive: smaller before larger is subtracted

Standard formula used by professionals worldwide

IV=4 IX=9 XL=40 XC=90 CD=400 CM=900 are the six subtractive pairs

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I before V or X. X before L or C. C before D or M. Only one smaller before one larger.

MMXXVI = 1000+1000+10+10+5+1.

I = 1 (smallest) | MMMCMXCIX = 3,999 (largest without vinculum).

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