It's about one-and-one-tenth times as big as a Penny
In other words, 306 square millimeters is 1.1 times the size of a Penny, and the size of a Penny is 0.935 times that amount.
(United States one-cent coin) (a.k.a. Lincoln penny, a.k.a. Cent, a.k.a. One cent piece)The Lincoln penny, in its current design since 1909, has a diameter of 19.05 mm (0.75 in) and an area of 285.0 sq. mm.
It's about nine-tenths as big as a Nickel
In other words, 306 square millimeters is 0.8661 times the size of a Nickel, and the size of a Nickel is 1.155 times that amount.
(United States five-cent coin) (a.k.a. Jefferson nickel)The nickel, in its current design since 1938, has a diameter of 21.21 mm (0.835 in) and an area of 353.3 sq. mm.
It's about one-and-one-fifth times as big as a Dime
In other words, 306 square millimeters is 1.215 times the size of a Dime, and the size of a Dime is 0.823 times that amount.
(United States ten-cent coin) (a.k.a. Roosevelt dime)The dime, in its current design since 1946, has a diameter of 17.91 mm (0.705 in) and an area of 251.9 sq. mm.
It's about four-fifths as big as a Postage Stamp
In other words, 306 square millimeters is 0.8 times the size of a Postage Stamp, and the size of a Postage Stamp is 1 times that amount.
(average; United States dimensions)A typical postage stamp measures an average of 400 sq. mm. One of the most prized stamps among collectors is the US-issued "Inverted Jenny" stamp printed in 1918, which features an upside-down image of Curtiss JN-4 ("Jenny") airplane; a single stamp sold for $977,500 at a 2007 auction.
It's about two-thirds as big as a Quarter
In other words, 306 square millimeters is 0.6621 times the size of a Quarter, and the size of a Quarter is 1.51 times that amount.
(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. Washington quarter, a.k.a. two bits)The George Washington quarter, in circulation in various forms since 1932, has a diameter of 24.26 mm (0.955 in) and an area of 462.2 sq. mm.
It's about two-fifths as big as a Secure Digital (SD) card
In other words, 306 square millimeters is 0.4 times the size of a Secure Digital (SD) card, and the size of a Secure Digital (SD) card is 2.5 times that amount.
A Secure Digital (SD) card measures 3.2 cm by 2.4 cm for a total area of 770 square millimeters. SDXC Cards, the latest standard for the technology, will allow the cards to hold up to 2 terabytes of data.
It's about four times as big as a Nailhead
In other words, 306 square millimeters is 3.936 times the size of a Nailhead, and the size of a Nailhead is 0.2541 times that amount.
(for 11-gauge wire nai)An 11-gauge nailhead measures 77.740 square millimeters. Nails have been used since ancient times; archaeologists have discovered Ancient Egyptian nails that are over 5,000 years old. |