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Changing units converts dimensions. Changing currency only changes the label, not exchange rates.

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Units & fractions

Convert dimensions and check rounded-fraction error.

Result calculated from the displayed dimensions.

Millimetres (mm)25.4
Dimensions & materials

Dimensions & materials

Accepts decimal commas, decimal points and fractions such as 2 1/2 or ½. Do not use thousands separators.
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Accepts decimal commas, decimal points and fractions such as 2 1/2 or ½. Do not use thousands separators.

Your plan, measured

Millimetres (mm)25.4
Centimetres (cm)2.54
Metres (m)0.0254
Inches (in)1
Feet (ft)0.083333333333
Fractional inches1″
Fraction rounding error0 in
1 in
Schematic drawing. Check the dimensions.

How to check this calculation

Formula & conventions

Conversions use the exact definition of 1 inch = 25.4 mm. Fractions are rounded to the selected division; the result also reports the physical difference caused by rounding.

1 in = 25.4 mm; 1 ft = 304.8 mm

Position origin: left edge or base indicated in the drawing.

Sources & references