Free tool

Skinfold Body Fat Calculator

Estimate your clients' body fat percentage with skinfold calipers using the most validated scientific methods: Jackson-Pollock (3-site and 7-site) and Durnin-Womersley. Get accurate, trackable results session after session.

How to use this calculator

Select a measurement method, enter the client data, and type each skinfold value in millimeters. Use a calibrated caliper and always measure on the right side of the body. Take 2-3 readings per site and use the average.

Skinfold measurements (mm)

Skinfold site locations

ChestAbdominalThigh
Chest (pectoral): Diagonal fold between the shoulder and hip. Men: halfway between the anterior axillary line and the nipple. Women: one-third of the way from the anterior axillary line to the nipple.
Abdominal: Vertical fold 2 cm to the right of the umbilicus.
Thigh: Vertical fold on the anterior midline of the thigh, halfway between the inguinal crease and the top of the patella.
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