Coin sizes: US penny to dollar and euro coins (diameter × thickness) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/coins-us-and-euro/  (CC BY 4.0)
Basis: US Mint coin specifications; European Central Bank euro coin specifications
Catalog version: 2026-10-20

Sizes: see table below
- Plain discs at the official diameter and thickness, for coin holders, slots, sorters and counterweights; no design is reproduced.

coin  diameter_mm  thickness_mm
US cent (penny)  19.05  1.52
US 5 cents (nickel)  21.21  1.95
US 10 cents (dime)  17.91  1.35
US 25 cents (quarter)  24.26  1.75
US half dollar  30.61  2.15
US dollar coin (golden dollar)  26.49  2.0
1 euro cent  16.25  1.67
2 euro cent  18.75  1.67
5 euro cent  21.25  1.67
10 euro cent  19.75  1.93
20 euro cent  22.25  2.14
50 euro cent  24.25  2.38
1 euro  23.25  2.33
2 euro  25.75  2.2

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- US Mint: Coin specifications — web — US Mint; dimensions are facts — https://www.usmint.gov/learn/coins-and-medals/circulating-coins
- European Central Bank: Euro coins: specifications — web — European Central Bank; dimensions are facts — https://www.ecb.europa.eu/euro/coins/html/index.en.html

Free files (CC BY 4.0, Xem Studio; STEP + STL, 14 parts): https://xemstudio.com/files/hardware/coins-us-and-euro/index.json
API: https://xemstudio.com/api/geometry?object=coins-us-and-euro