Calculate your body fat percentage, lean body mass, fat body mass, and body fat classification parameters fast and simply… FOR FREE!
Height, Age, and Weight are required for the calculation to work. Please see instructions below.
Guide To Taking Measurements
Hip – Start the tape at the side of the body where you can feel the hip bone. Take the tape 360 degrees across the other hip bone and meet back where you started.
Wrist – Take the measurement 360 degrees around the wrist bone.
Waist – Start the tape at the side waist and measure 360 degrees around the widest part of the belly.
Forearm – Take the measurement 360 degrees around the widest part of the forearm, just below the elbow. No need to tense your muscles for this, but don’t forget the two finger rule!
Thigh – Take the measurement 360 degrees around the widest part of your thigh. Do not tense your muscles for this..
Calf – Take the measurement 360 degrees around the widest point of your calf. Do not tense your muscles for this.
Guide To Skin Fold Sites
Chest (pectoral) – The pinch is taken between the nipple and the armpit (axilla) but closer to the armpit, approximately 1/3 the distance. The skin fold is a diagonal one in the direction of nipple-armpit line.
Belly (abdomen) – A vertical or horizontal fold is taken 2 centimeters to the right of the bellybutton (umbilicus). The vertical pinch is mostly used as the fat folds easier with most people. Some might find the horizontal pinch to fold easier. Use the direction that allows the most comfortable measurement.
Thigh (quadriceps) – The skin fold here should be taken in the front, halfway from the upper part of the knee (proximal patella, where it corners when the leg is bend) and the fold above the thigh when the leg is raised (inguinal fold). The vertical fold should be pinched a little harder as fat and skin tissue in this area tends to be somewhat firmer. The thigh skin fold may therefore overestimate fat content.
Tricep (upper arm, back) – Pinch a vertical skin fold halfway the upper arm. If you want to be more precise, use a tape between the bony top of the shoulder or acromiale (do not confuse it with the bony upper part of the shoulder blade!) and the most prominent tip of the elbow (radiale). Mark a dot or a horizontal line at half the measured distance, that is where the vertical fat fold should be pinched. Face the hand palm forward.
Subscapula (shoulder blade, lower tip) – Locate the bottom tip of the shoulder blade (scapula) by moving the arm behind the back. Move the arm back to its original position. Take the skin fold at approximately 2 centimeters below the bottom tip at an angle of 45 degrees, almost parallel to the inside angle of the shoulder blade.
Hip (suprailiac or iliac crest) – This skin fold is right below the front or anterior part of the armpit (axilla). From here follow a vertical line until you hit the hipbone. The skin fold is an angled one (approx. 45 degrees going up and away from the body) 2 centimeters right above the iliac crest. The fold spot should be between the top of the hipbone on the side and the bony part on the lower right of the belly, which is still the same hipbone.at an angle of 45 degrees, almost parallel to the inside angle of the shoulder blade.
Midaxillary (armpit at fifth rib) – This fold is taken on the side of the torso, horizontally or vertically at the fifth rib. The most common however is a vertical fold. Its position can be determined by locating the lower tip of the breast bone (xiphoid process) and following a horizontal line to the side of the torso until you are right below the arm pit (axilla). The arm should be raised at approximately chest height.