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Online Feet and Inches to MM

Convert feet and inches to millimeters. Enter ft and in, get mm. 1 in = 25.4 mm. Client-side only.

Feet and inches

Frequently Asked Questions

What is the formula?
1 in = 25.4 mm, 12 in = 1 ft. Total mm = (feet × 12 + inches) × 25.4.
Example?
5 ft 7 in = 67 in = 67 × 25.4 = 1,701.8 mm.

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