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Why Are Roman Numerals Still Popular in the 21st Century?

March 30, 2026

A 2,000-Year-Old Number System. Still Everywhere.

We have a perfectly good number system. Arabic numerals: 0 through 9, positional notation, works great for everything from grocery receipts to quantum physics. It's been the global standard for over 500 years.

And yet. Walk through any city and you'll encounter Roman numerals within minutes. On a clock face. On a building facade. Tattooed on someone's forearm. At the end of a movie. On a football game. In the name of a king, a pope, or a video game sequel.

Why? What is it about these seven clunky letters — I, V, X, L, C, D, M — that keeps them alive in a world that has absolutely no practical need for them?

The Clock Face Mystery

Start with the most ubiquitous example: clock faces. Roman numeral clocks are everywhere, from train stations to living rooms. And almost all of them have something weird going on.

Look at the 4. On most Roman numeral clocks, it's IIII, not IV. This is technically wrong. The standard subtractive notation says 4 should be IV. But clockmakers have used IIII for centuries, and no one can agree on why.

The theories:

  • Visual balance. IIII on the left side of the dial mirrors VIII on the right. IV would look lighter, creating asymmetry. Clockmakers are designers first, mathematicians second.
  • Jupiter theory. In Latin, Jupiter was written IVPPITER. Some historians suggest that using IV for 4 felt disrespectful to the king of the gods. This theory is charming but almost certainly wrong.
  • Easier casting. A clock face with IIII uses twenty I's, four V's, and four X's. A clock with IV would need a different distribution. For metal casting, IIII is simpler to produce in batches.
  • Louis XIV preference. Legend has it that French King Louis XIV insisted on IIII on his clocks because he preferred it. Given that Louis XIV insisted on a lot of things, this is at least plausible.

The honest answer: nobody knows. It's one of those traditions that predates anyone keeping track of why. And that's kind of the point — Roman numerals thrive in exactly the spaces where tradition matters more than logic.

There are exceptions. London's Big Ben uses the "correct" IV. So does the Shepherd Gate Clock at the Royal Observatory in Greenwich — the home of accurate timekeeping. Precision clocks follow the rules. Decorative clocks follow the vibe.

Inked in Stone (Well, Skin)

Roman numeral tattoos are one of the most popular tattoo categories in the world. Not tribal. Not flowers. Not quotes. Numbers in an obsolete notation system. Think about how strange that is.

People tattoo birthdays, anniversaries, memorial dates, and lucky numbers in Roman numerals. The most common placements: along the collarbone, the inner forearm, the ribcage, or wrapped around the wrist. The numerals stretch beautifully in a horizontal line — the angular shapes (all straight lines in I, V, X) lend themselves to clean, elegant typography.

But there's a deeper reason. A date written as IX · XV · MCMXC doesn't immediately register as September 15, 1990. It requires a moment of decoding. That's the appeal. The tattoo becomes a small riddle, a private meaning encoded in a public script. It says: this date matters to me, and if you want to know why, you'll have to ask.

The flip side: Roman numeral tattoos are a minefield for errors. The most common mistakes:

  • Using IIII instead of IV (technically the clock convention, but wrong in standard notation)
  • Writing 1990 as "1990" instead of MCMXC
  • Getting the month/day order wrong across date formats
  • Confusing subtractive pairs (writing IL for 49 instead of the correct XLIX)

Tattoo artists are skilled at lettering but not always at Roman numeral math. Always, always double-check your conversion before it becomes permanent. This is, quite literally, what converter websites were made for.

The Hollywood Tradition

Stay through the end credits of almost any film and you'll spot the year in Roman numerals. MMXXVI instead of 2026. It's one of those things you never notice until someone points it out, and then you can't unsee it.

The tradition started for a practical reason: studios didn't want audiences to immediately know how old a film was. In the era of TV reruns and theatrical re-releases, a movie stamped "1965" looked dated. "MCMLXV" required enough mental effort that most viewers wouldn't bother to decode it. The copyright year was technically visible (legally required) but functionally obscured.

Today, it's pure convention. Nobody is fooled by Roman numerals in credits anymore, but the tradition persists because... well, because traditions persist. Especially traditions involving Roman numerals. That's kind of their whole thing.

Rocky II Sounds Better Than Rocky 2

Movie sequels discovered Roman numerals early and never let go. The Godfather Part II. Rocky III. Star Wars Episode IV. Saw VI. The pattern is so ingrained that subverting it feels like a statement: "22 Jump Street" is deliberately comedic in using Arabic numerals.

Video games pushed it even further. Final Fantasy is up to XVI (16). Grand Theft Auto reached V. Civilization went to VI. The Roman numerals make each installment feel like a chapter in an epic rather than a software update. "Civilization VI" sounds like a historical era. "Civilization 6" sounds like a patch number.

The effect is real: Roman numerals add a sense of legacy and weight to franchise numbering. Each sequel feels like it belongs to a lineage rather than being just another product. It's the same psychology that makes Super Bowl LVIII feel like an event while "Super Bowl 58" sounds like an item on a spreadsheet.

Cornerstones and Monuments

Walk through any old city center and you'll find Roman numerals carved into stone: MCMXXIV on a courthouse, MDCCCLXXVI on a church, MMII on a renovated library. These aren't there because the builders couldn't use Arabic numerals. They're there because a date carved in Roman numerals looks like it belongs on stone.

The angular shapes of Roman numerals are ideal for carving and engraving. No curves (except in the rarely-seen D), no thin strokes that might erode. Just straight, bold lines that weather centuries of rain and wind. A cornerstone reading "1924" looks like a label. One reading "MCMXXIV" looks like a declaration.

So Why Do They Persist?

Here's the pattern across all of these uses: clocks, tattoos, movies, sequels, buildings, Super Bowls. In every case, Roman numerals aren't being used because they're practical. They're being used because they feel different from regular numbers.

Arabic numerals are transparent. You see "42" and your brain registers the quantity instantly, without friction. Roman numerals are opaque. You see "XLII" and there's a beat — a tiny moment of translation. That friction is the feature. It forces a pause, adds a layer of formality, and signals that this number is special.

Roman numerals are a font for importance. They don't communicate better than Arabic numerals. They communicate differently. They say: this is not just a number. This is a date that matters. A game that matters. A building that matters. A sequence that matters.

Two thousand years after Rome fell, its number system lives on — not because we need it, but because we want what it represents. Permanence. Gravitas. A connection to something older than ourselves.

For seven impractical letters, that's not a bad legacy.

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