Convert numbers to Roman numerals
Type a number or a Roman numeral and see the answer at once. Accurate for 1 up to millions, with words, a full chart and a page for every number. Everything runs in your browser.
2026 in words: Two thousand twenty-six
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Roman numerals 1 to 10
The core sequence everything else builds on.
Popular numerals and numbers
The numerals people most often look up, each with its meaning, the step-by-step build and the wrong forms flagged.
Tools and references
More ways to work with Roman numerals.
Number to words
Spell any number in plain English, cardinal or ordinal.
Chart 1 to 1000
A complete, printable reference table you can search.
Roman numeral clock
A live clock face and why many use IIII instead of IV.
Tattoo date generator
Turn a date into a numeral and download a clean stencil.
Roman numeral riddles
Multiply to 35, half of XII, the sixty and LIX trick: all answered.
Free JSON API
A static endpoint for developers, no key required.
How the converter works
Roman numerals are an additive and subtractive system. You write the largest values first and add as you go, with a small twist: to avoid four of the same letter in a row, a smaller symbol placed before a larger one subtracts. That is why four is IV (one before five) rather than IIII, and nine is IX (one before ten). The converter above applies these rules both ways, so you can type MMXXVI and read back 2026 just as easily as the reverse.
Each conversion happens on your device. Nothing you type is sent anywhere, so you can paste a private date or a long numeral without a second thought. For a deeper walkthrough, read the guide to how Roman numerals work, or jump to a writing guide for a specific number and build the numeral step by step.
Frequently asked questions
How do you write a number in Roman numerals?
Break the number into thousands, hundreds, tens and ones, then write each part with the largest symbols first. For example 2026 is MM (2000) + XX (20) + VI (6), which gives MMXXVI. The converter above does this instantly for any number from 1 upward.
What are the seven Roman numeral symbols?
I is 1, V is 5, X is 10, L is 50, C is 100, D is 500 and M is 1000. Every Roman numeral is built from these seven letters.
Is zero a Roman numeral?
No. The Roman system has no symbol for zero. It starts at I for one, which is one reason it was eventually replaced for arithmetic by the Hindu-Arabic numerals we use today.
What is the largest number in standard Roman numerals?
3999, written MMMCMXCIX. Beyond that a bar (vinculum) is drawn over a numeral to multiply it by 1000. This converter shows larger numbers using a bracket form such as (V) for 5000.
Last updated July 22, 2026. Reviewed for accuracy against the standard rules for Roman numerals. How we check accuracy.