Four caliper measurements in. Cephalic index, CVAI, and a parent handout out. This is the chairside tool I use for infant head-shape exams.
Enter AP length, both diagonals, and parietal width. You get cephalic index and cranial vault asymmetry index, each with a plain-language band, plus a one-tap parent handout PDF that puts the finding in language a family follows. No mental math, no chart taped to the wall.
First name and email. The calculator link lands in your inbox.