52.8 mm
3 mm.
65 mm = 6.5 cm
i believe you mean US sizes Diam = 20.7 mm Circum = 64.1 mm
25.4 mm = 1 in → 65 mm = 65 ÷ 25.4 in ≈ 2.56 in
uhh... 6 mm!
3 mm.
16.51 mm inside diameter
If you are measuring the diameter of the ring (which one can assume given the size) then it is about a 10 1/4 ring size. A 20.2 mm is a 10.5 in the US while a 19.8 is a 10. The sizes are different by country. Refer to the ring size chart in the links below if you need the sizes for different countries.
65 mm is about 2.55905511811024 inches. Direct Conversion Formula 65 mm* 1 in 25.4 mm = 2.559055118 in
3.5 inches is 88.9 millimeters.
65 mm = 6.5 cm
i believe you mean US sizes Diam = 20.7 mm Circum = 64.1 mm
65 cm = 650 mm
1 cm = 10 mm → 65 cm = 65 × 10 mm = 650 mm
A ring size of 20mm typically corresponds to a size 10 in the U.S. ring sizing system. To convert millimeters to U.S. sizes, the diameter (in mm) is measured, and each size increment usually represents a change of about 0.4mm in diameter. Therefore, a 20mm diameter ring would fit a U.S. size 10 comfortably.
5 mm is about 1/5". About the diameter of a pea.
25.4 mm = 1 in → 65 mm = 65 ÷ 25.4 in ≈ 2.56 in