Mjøsa is the 2^nd largest lake by water volume in the Scandinavia at 56 km³.

Containing up to 56 km³ of water, Mjøsa has a maximum depth of 449 meters and spans a surface area of 362 km².

It spans 117 km on its length. Countries along its shoreline in Europe: Norway.

Lake Mjøsa's surface area is 2, 7 times wider and its volume 4.5 times larger than Hornindalsvatnet Lake, Norway's and Europe's deepest lake. The lake also contains the island of Helgøya. 

 Compare Mjøsa with Lake Päijänne from Finland.

 Compare Mjøsa with Lake Garda from Italy.