Construction Unit Converter

Use these length conversions when reading architectural drawings, measuring rooms, checking material sizes or comparing metric and imperial construction dimensions.

Units covered

millimetercentimetermeterinchfootyard

Popular conversions

millimeter→inch inch→millimeter meter→foot foot→meter centimeter→inch yard→meter

Frequently asked questions

Frequently Asked Questions

How many millimetres are in an inch?

One inch equals exactly 25.4 millimetres.

Which units are common on construction drawings?

Millimetres and metres are common in metric drawings, while inches and feet are common in US customary drawings.

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Use the universal calculator to choose any two units in the same category.

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