What is greater 1000000 mm or 100 m?

One million millimeters (1,000,000 mm) is greater than 100 meters (100 m). To compare the two, convert 100 meters to millimeters: 100 m equals 100,000 mm (since 1 m = 1,000 mm). Therefore, 1,000,000 mm is significantly greater than 100,000 mm.