Bioelectrical Impedance Analysis

Tanita Technology Explained

What is Bioelectrical Impedance Analysis?

Bioelectrical Impedance Analysis is a technique used for estimating body composition. With BIA you can get a quick overview of the water and fat percentage in a body. It's a fast and safe technique that's become very popular to its ease of use. Tanita offers a variety of accurate weighing scales that alle make use of the bioelectrical impedance analysis. Together with a very smart algorithm and years of experience Tanita offers very accurate body monitors. These weighing scales are used world wide by consumers and professionals to do an bioelectrical impedance analysis of their body composition. 

How does Tanita BIA Technology work?

All Tanita body composition monitors use advanced Bioelectrical Impedance Analysis technology. When you stand on a Tanita monitor, a very low, safe electrical signal is sent from four metal electrodes through your feet to your legs and abdomen. In segmental models, the four hand-held electrodes will provide extra readings for each leg, arm and abdominal area.


The electrical signal passes quickly through water that present in hydrated muscle tissue but meets resistance when it hits fat tissue. This resistance, known as impedance, is measured and input into scientifically validated Tanita equations to calculate body composition measurements. Depending on the monitor, body composition measurements are provided in under 20 seconds.


What is Tanita Advanced Dual Frequency BIA Technology?

Tanita body composition monitors with Advanced Dual Bioelectrical Impedance Analysis Technology use two different frequencies to capture your body composition data. By using different frequencies, even higher accuracy of measurements can be achieved.

Multi-Frequency Bioelectrical Impedance Analysis Technology?

Tanita Multi-Frequency Monitors are able to measure bioelectrical impenedance analysis at three, five or six different frequencies. The additional frequencies provide an exceptional level of accuracy compared to single frequency monitors and also makes it possible to estimate extra-cellular water, intra-cellular water and total body water. This information is essential for providing a detailed insight into a personal health status and for indicating health risks such as severe dehydration or oedema (water retention).

Why is Tanita Bioelectrical Impedance Analysis technology the best?

There are several reasons why Tanita's BIA technology is superior to anything else on the market:


Prediction equations for reliable results

Every Tanita body composition monitor uses patented equations researched and developed by body composition experts to deliver accurate body composition measurements. The algorithm includes additional information such as gender, age and height alongside weight and impedance data collected from thousands of people worldwide to ensure the most Reliable results possible.

Scientific excellence recognised worldwide

Tanita Bioelectrical Impedance Analysis monitors have been more extensively validated against alternative body composition techniques than any other brand of monitor on the market. In addition, Tanita body composition monitors have been used in independent research studies which have highlighted Tanita as the Bioelectrical Impedance Analysis the most clinically accurate compared to other products. Tanita's Medical Advisory Board and its extensive network of scientific experts ensure Tanita remains at the forefront of scientific advances.

Precision weighing = accurate measurements

Accurate weight measurements ensure the highest body composition measurement accuracy. Tanita prides itself on manufacturing precise weighing mechanisms for both home-use and professional models that guarantee accuracy to the nearest 50g or 100g. Only Tanita has achieved Non-Automatic Weighing Instruments (NAWI) certification, Class III Medical Devices compliance (MDD III) and European Conformity (CE) approval, ensuring the highest standards are met.