Body fat measurement can give you a truer picture of your fitness and health risks than just weight. Scales and devices that use bioelectrical impedance offer a quick and fairly accurate way to track your body fat. Athlete and child settings are important if you plan to use it for kids or those with high muscle mass and low body fat. Using calipers is trickier to get right, but is a method in common use.
This sleek and stylish scale measures weight to 0.2 lb or 0.1 kg and uses bioelectrical impedance to measure fat mass, lean mass and body mass index. It transmits the data via Wi-Fi to the Withings.com website; users can access their personal data and graphs on the website or via an iPhone app. Up to eight users can use the scale and each can set their privacy level. You can have your measurements Tweeted if you desire. Maximum weight: 396 pounds or 180 kilograms.
This Omron scale can be set up for four different users, plus a guest option. It stores the last four readings per person for comparison and for tracking progress over time. In addition to weight, it displays body fat percentage and BMI (body mass index). For BMI, it indicates whether you are in a healthy range, overweight, obese, etc. It has a weight limit of 330 pounds. The drawback is that you have to bend down to press buttons to access earlier measurements.
This handheld unit lacks a weight scale, so you must input the weight. It gives body fat percentage and body fat weight. It is programmable for multiple users.