1 euro coin vs Rice grain: size comparison
1 euro coin: 2.33 cm. Rice grain: 7 mm. Both silhouettes are drawn at the same scale.
Size ratio: ×3.3
1 euro coin
2.33 cm
What is measured Diameter of a 1 euro coin
It weighs 7.5 g and is 2.33 mm thick.
Source : Wikipedia — 1 euro coin
Rice grain
7 mm
What is measured Length of a long-grain rice grain
Rice feeds more than half of humanity.
Source : Wikipedia — Rice