Measurement tool

Seaming overlap calculator

Enter the seam measurements below to calculate overlap. Use the same unit for every measurement.

Can setup

Can code (optional preset)

Preset thicknesses are filled in for you. You can adjust them if needed.

Body thickness (tb)

Cover thickness (tc)

Enter all three measurements in the same unit as the thickness values.

Seam width (W)

Body hook (BH)

Cover hook (CH)

Clearing removes W, BH, CH, and the displayed result. Your can setup and result history stay unchanged.

Show formula

Overlap is calculated as a percentage from the measurements entered above.

%OL = (BH + CH + 1.1 × tc − W) ÷ (W − (2.6 × tc + 1.1 × tb)) × 100