It's about as big as a Post-it® Note (3M)
(3M) (generically sticky notes, a.k.a. repositionable notes, a.k.a. repositional notes)
A Post-it® Note measures 0.000000540 hectares in total area. In September, 1989, Hurricane Hugo swept through Charleston, South Carolina with winds up to 230 kph (140 mph), uprooting eight oak trees in Mr. Bruce Brakefield's yard, but leaving in place a Post-it® note attached to his front door.
It's about as big as a Playing Card
In other words, 0.000000540 hectares is 0.96 times the size of a Playing Card, and the size of a Playing Card is 1 times that amount.(ISO 216 B8 size)
A single ISO 216 B8-size playing card measures 0.000000560 hectares. Although this size is the most common playing card, many casinos use the smaller "bridge size" card — 0.000000260 hectares smaller.
It's about seven times as big as a Secure Digital (SD) card
In other words, 0.000000540 hectares is 7 times the size of a Secure Digital (SD) card, and the size of a Secure Digital (SD) card is 0.14 times that amount.A Secure Digital (SD) card measures 3.2 cm by 2.4 cm for a total area of 0.0000000770 hectares. SDXC Cards, the latest standard for the technology, will allow the cards to hold up to 2 terabytes of data.
It's about one-tenth as big as an Apple iPad
In other words, 0.000000540 hectares is 0.1349 times the size of an Apple iPad, and the size of an Apple iPad is 7.413 times that amount.(for 9.7 inch, Apple iPad Air MD785LL/B)
An Apple iPad measures 23 cm (9.4 in) x 17 cm (6.6 in) for a total device area of 0.0000040020 hectares. The base model iPad Air features 16 GB of storage capacity.
It's about ten times as big as a Postage Stamp
In other words, 0.000000540 hectares is 10 times the size of a Postage Stamp, and the size of a Postage Stamp is 0.1 times that amount.(average; United States dimensions)
A typical postage stamp measures an average of 0.0000000400 hectares. 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 eleven-and-a-half times as big as a Quarter
In other words, 0.000000540 hectares is 11.68 times the size of a Quarter, and the size of a Quarter is 0.0856 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 0.000000046220 hectares.
It's about fifteen-and-a-half times as big as a Nickel
In other words, 0.000000540 hectares is 15.28 times the size of a Nickel, and the size of a Nickel is 0.0655 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 0.000000035330 hectares.