How long is the Italian debt?
In June 2026 Italy's public debt passed €3,207 billion — an all-time high, straight from the Bank of Italy. Paying it off is somebody else's problem; today we just queue it: imagine converting every cent into 2-euro coins and lining them up, edge to edge, like the world's most expensive train.
The question: How long would that line of coins be?
You need two specs and one geography fact: the diameter of a 2-euro coin (25.75 mm) and the circumference of the Earth (40,075 km). Everything else is multiplication.
Work it out
- €3.2072 × 10¹² ÷ 2 = 1.6036 × 10¹² coins — 1.6 trillion shiny 2-euro coins.
- A 2-euro coin is 25.75 mm across — identical from Dublin to Palermo, it's the law.
- Edge to edge: 1.6036 × 10¹² × 0.02575 m ≈ 4.13 × 10¹⁰ m ≈ 41.3 million km.
- Divide by the equator: 41,300,000 ÷ 40,075 ≈ 1,030 laps around the planet.
- Bonus, stacking them flat (2.06 mm thick): ≈ 3.3 million km ≈ 8.6 one-way trips to the Moon. Laid edge-to-edge instead, the same train reaches the Moon 107 times.
About 41 million kilometres: 1,030 laps around the Earth — or 107 one-way tickets to the Moon. Fiscal policy, finally, as infrastructure.
What it teaches
Three trillion is abstract to the primate brain by design; 1,030 laps of the planet is not. Converting money into objects with a size turns a budget line into a landscape — same number, suddenly visible.
✍️ From a reader’s idea
calcolare la distanza in km del debito pubblico italiano, usando moete da 2€. quanta distanza coprirebbero intorno al mondo?
Verified numbers behind it
- €3,207.2 billion public debt (June 2026, all-time high) — Bank of Italy
- 2-euro coin: 25.75 mm diameter, 2.06 mm thick — ECB coin specifications
- Earth equatorial circumference: 40,075 km — standard geodesy
- Mean Earth–Moon distance: 384,400 km — NASA lunar fact sheet
How this page was built
- math — every step verified in Python, no shortcuts
- data — 4 sources checked, 1 web lookup
- illustration — 2 ComfyUI generations — the first failed QA (it drew dollar signs on the coins)
- short video — 190 frames → 15.8 s, poster included
- idea → live page — about 25 minutes