Land Measurements: The Hawaiian Archipelago includes 18 islands (7 inhabitable) and 113 (small and uninhabitable) coral atolls that strectch across the Pacific Ocean for some 1,500 miles. On our map (upper left) we show the eight largest islands. Width and length numbers shown (below) use Hawaii (the Big Island).
Horizontal Width: 95 miles
Vertical Length: 82 miles
Note: Maximum lengths and widths are point-to-point, straight-line measurements from a Mercator map projection, and will vary some using other map projections