Foot (ft), Millimeter (mm). 1 ft, 305 mm. 2 ft, 610 mm. 3 ft, 915 mm. 4 ft, 1,220 mm. 5 ft, 1,525 mm. 6 ft, 1,830 mm. 7 ft, 2,135 mm. 8 ft, 2,440 mm.
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