What is the smallest denomination of euro coins?

The smallest denomination of euro coin is the 1 cent coin, worth €0.01. It represents one hundredth of a euro and is the lowest of the eight standard euro-coin denominations.

Euro coins range from 1 cent through 2 euros: 1, 2, 5, 10, 20 and 50 cents, followed by €1 and €2. The 1-cent coin is made of copper-covered steel, has a smooth edge, weighs 2.30 grams and measures 16.25 millimetres in diameter. Its common reverse side was designed by Luc Luycx and includes a globe and twelve stars.

The coin first entered circulation in 2002, when euro notes and coins replaced national cash in participating countries. Some countries still mint or circulate 1-cent pieces while rounding cash totals to the nearest five cents, so cash-rounding policies do not change the denomination itself. The 2-cent and 5-cent coins are larger denominations, not smaller alternatives.