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Inches-cm seam allowance conversions
Updated automatically every 5 minutes

Inches

cm / mm

Needle width / position

Fabric alignment

1/8 ”

3.5 mm

Position 0

Centre of foot

1/4 ”

6 mm

Width 5 mm

Right foot edge

3/8 ”

9 mm

Width 2 mm

Right foot edge

½ ”

1.25 cm

Position 0

Right foot edge

5/8 ”

1.5 cm

Position 0

Line on needle plate