It's about 0.00000004 times as big as Glacier Bay National Park.
In other words, 51 squares is 0.000000035650 times the size of Glacier Bay National Park, and the size of Glacier Bay National Park is 28,050,000 times that amount.(a.k.a. Glacier Bay National Park and Preserve) (Hoonah-Angoon Census area, and Yakutat City and Borough, Alaska)
Containing nine tidewater glaciers, Glacier Bay National Park covers 1,431,000,000 squares of which 1,158,000,000 squares is designated a Wilderness Area. Glacier Bay is home to the 33.8 km (21 mi) long Margerie Glacier.
It's about 0.00000004 times as big as Connecticut.
In other words, 51 squares is 0.00000003300120 times the size of Connecticut, and the size of Connecticut is 30,301,900 times that amount.(United States)
The "Constitution State" or the "Nutmeg State," Connecticut measures 1,545,400,000 squares in total area. The northern boundary between Connecticut and Massachusetts is an otherwise straight line marked by the 699,654 squares "Southwick Jog" — a notch of Massachusetts extending southward into Connecticut near Congamond Lakes.
It's about 0.00000003 times as big as Lake Ontario.
In other words, 51 squares is 0.000000024990 times the size of Lake Ontario, and the size of Lake Ontario is 40,020,000 times that amount.(a.k.a. Lac Ontario) (surface area)
The smallest of North America's Great Lakes (by surface area), Lake Ontario has a total area of 2,041,000,000 squares. It borders the cities of Toronto, Ontario, Canada and Rochester, New York.
It's about 0.00000003 times as big as Wales.
In other words, 51 squares is 0.0000000228540 times the size of Wales, and the size of Wales is 43,756,000 times that amount.(a.k.a. Cymru) (total area)
The area of the country of Wales (in the United Kingdom) is 2,231,600,000 squares. More than 82,312,000 squares, or about 4% of the country's land area, is made up of the fifty-plus islands in the Irish and Celtic Seas off the coast of the Welsh mainland.
It's about 0.00000002 times as big as New Jersey.
In other words, 51 squares is 0.00000002097590 times the size of New Jersey, and the size of New Jersey is 47,673,800 times that amount.(United States)
The "Garden State," New Jersey measures 2,431,360,000 squares in total area. The Garden State Parkway — the busiest toll highway in the country — runs the 277 km (172 mi) length of New Jersey's coast.
It's about 0.00000002 times as big as New Hampshire.
In other words, 51 squares is 0.00000001956560 times the size of New Hampshire, and the size of New Hampshire is 51,110,100 times that amount.(United States)
The "Granite State," New Hampshire measures 2,606,610,000 squares in total area. New Hampshire's western border with Vermont is marked by the Connecticut River — the longest river in New England with a length of 655 km (407 mi).
It's about 0.00000002 times as big as Vermont.