Convert 2 inches to millimeters
"Fractional Inches to Millimeters" Calculator
How many millimeters in 2 inches?
Answer
2″ = 50.8 mm
Exact: 1″ = 25.4 mm by definition (1959), and a ruler fraction converts without rounding. If the thread is marked G 2 (BSPP), its basic outside diameter is 59.614 mm (ISO 228-1): the inch size of a pipe thread is nominal.
2 ÷ 1 = 2; 2 × 25.4 = 50.8 mm
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