A good estimate would be 6-7 feet, but of course it's not that simple. Warmer air can hold more moisture, so it's not as if all that rain could have been snow "if only it had been a little colder". Also, the dynamics of the storm system itself would have had to be quite different to get a lot of snow out of it instead of rain... in other words, even if 7 inches of snow fell in 1 storm, there is nowhere that is digging out from 7 feet of snow from the same storm. It just won't work like that.
There are 215.9 millimeters in 8.5 inches. 8.5 inches x 25.4 millimeters/1 inch = 215.9 millimeters. 1 inches = 25.4 millimeters
312 millimeters = ~12.3 inches.
14 inches is 355.6mm
1 millimeter = 0.0393700787 inches 0.0393700787inches X 22 = 0.866141732 inches 22 millimeters = ~.87 inches Direct Conversion Formula 22 mm* 1 in 25.4 mm = 0.8661417323 in
2 1/2 inches are 2.5 inches are 63.5 millimeters.
3 feet 11 inches is 1,193.8 millimeters.
90 inches = 2,286 millimeters.
35.63 inches are in 905 millimeters.
750 inches = 19050 millimeters
0.155 inches = 3.94 millimeters (rounded)
1.275 inches are 32.385 millimeters.
0.215 inches = 5.461 millimeters.
2.18 Inches is about 55.372 millimeters.
1,035 millimeters = 40.75 inches.
76 inches = 1,930.4 millimeters.
0.4 inches = 10.16 millimeters
3 inches = 76.2 millimeters