1. Circumference: Measure all around the head. Position tape measure so its edge follows the hair line around the head and nape of the neck.2. Front to Nape:Measure from hairline at center of forehead straight back over crown to center of hairline at nape of neck.3. Ear to Ear across forehead:At front of ear, measure from hairline at base of sideburn, up across the hair line along forehead to same point in front of other ear.4. Ear to Ear over top:Measure from hairline directly above the ear across top of head to the hairline directly above the other ear.5. Temple to Temple round back: From temple to temple across the back of head.6. Nape of Neck:Measure the width of hairline across the nape of the neck.