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.
It's about one-tenth as big as an Apple iPad.
In other words, 0.000000560 hectares is 0.13990 times the size of an Apple iPad, and the size of an Apple iPad is 7.1480 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 seven-and-a-half times as big as a Secure Digital (SD) card.
It's about ten times as big as a Postage Stamp.
In other words, the size of a Postage Stamp is 0.10 times 0.000000560 hectares.(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 twelve times as big as a Quarter.
In other words, 0.000000560 hectares is 12.120 times the size of a Quarter, and the size of a Quarter is 0.08251 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 sixteen times as big as a Nickel.
In other words, 0.000000560 hectares is 15.850 times the size of a Nickel, and the size of a Nickel is 0.06309 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.