How this calculator works
The international foot is exactly 0.3048 m, or 304.8 mm. Dividing a millimetre dimension by that value gives decimal feet. The feet-and-inches display expresses the same length in mixed units, which is useful when translating a metric drawing for a tape marked in feet.
Formula
feet = mm / 304.8; mm = feet x 304.8.
Worked example
A 1828.8 mm panel is exactly 6 ft. A 2.5 ft panel is exactly 762 mm.
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Frequently asked questions
Is a foot exactly 304.8 mm?
Yes. It follows from the international foot definition of 0.3048 m.
Can I see feet and inches?
Yes. A separate readout splits the same result into whole feet and remaining inches.
Is this a board-foot calculation?
No. Feet measure length, while board feet measure lumber volume.