Why Choose TANITA?

At Tanita, we don’t just measure weight — we help you understand your body better. With over 75 years of innovation, scientific research, and global trust, Tanita has become a leader in body composition analysis, delivering accurate, reliable, and actionable health insights for individuals, healthcare providers, and organizations worldwide.

Science‑Based Algorithms

How a Body Composition Scale Works?

Tanita body composition scales use Bioelectrical Impedance Analysis (BIA) — a safe, low‑level electrical signal passes through the body to measure resistance (impedance). This data, combined with inputs like weight, height, age, and gender, is analyzed using advanced algorithms to calculate key health metrics such as fat, muscle, water, and more.

The Tanita Medical Advisory Committee

Innovation must be grounded in science and ethics. That’s why Tanita established the Medical Advisory Committee in 1998 — a team of independent experts in body composition, obesity, and nutrition. Together, they conduct joint research to advance our technology and ensure the accuracy, integrity, and credibility of every analyzer we produce.

Three Core Features of Tanita’s Algorithm

1. 4C Technology — The Gold Standard of Accuracy

Tanita’s body composition algorithm is based on the Four‑Component (4C) model, widely recognized as one of the most accurate methods available.

• It analyzes body water, protein, minerals, and fat, offering a holistic view of health.
• Compared to conventional DXA‑based algorithms, our 4C Technology delivers greater accuracy, especially for individuals who are overweight, underweight, or experiencing fluid imbalances (edema).
• Validated performance: The 4C algorithm significantly improves two key accuracy indicators:

○ R² (coefficient of determination) — closer to 1 = stronger consistency with actual values.

○ SEE (standard error of estimate) — lower values = less variation and higher precision.

2. Category‑Specific Algorithms — Because One Size Doesn’t Fit All

Tanita doesn’t use a single generic formula. Our analyzers apply category‑specific algorithms, tailored by:

• Gender
• Age group (children/adults)
• Body type (standard/athlete)

Research shows that athletes and non‑athletes can have very different body compositions even with similar impedance values. Using specific algorithms for each category ensures more accurate and meaningful results.

3. Advanced Multi‑Frequency Measurements — Precision at Every Level

Tanita uses multiple frequencies (low, 50 kHz, and high) to separate intracellular and extracellular fluids, giving deeper insights into muscle quality, hydration, and overall health.

• This approach reduces errors caused by changes in muscle composition or edema, particularly those associated with aging.
• Validated algorithms: Our limb muscle mass calculation method, developed with external experts, is published and peer‑reviewed (Yamada Y et al., Int J Environ Res Public Health, 2017), ensuring data you can trust.

Evidence & Results

Proven Accuracy

Tanita’s professional analyzers have been validated against gold‑standard methods, confirming their reliability for clinical and wellness applications.

Body Fat & Muscle Mass

Our multi‑frequency analyzers achieve 99% consistency (R² = 0.99) with the 4C method, the benchmark for body composition assessment.

Limb Muscle Mass / SMI

Using our specialized algorithm, Tanita delivers highly accurate limb muscle mass measurements that remain consistent even with age‑related muscle changes or fluid imbalances (Yamada Y et al., 2017).

Additional Metrics

We also provide evidence‑based measurements for total body water and extracellular fluid, further validating our analyzers’ precision.

Trusted in Research & Government Health Programs

Tanita analyzers are used in official health surveys and research projects worldwide.

In Japan:

• 2014–2016: Ministry of Education — Super Food Education School Survey
• 2018: Ministry of Health — National Health and Nutrition Survey
• 2019: Ministry of the Environment — Eco‑Children Survey

Internationally:

• USA National Institute for Health Sciences
• UK MRC Molecular Biology Laboratory
• UK National Health Service (NHS)
• Hong Kong Growth Study

Consistency Across Studies For example, in the 2017 National Health and Nutrition Survey, muscle mass in adults aged 65+ was measured using a Tanita multi‑frequency analyzer. Devices with the same algorithm deliver comparable results, ensuring consistency across research programs.

After‑Sales Service System

Buying a Tanita analyzer is the start of a long‑term partnership.

• We handle over 700 maintenance and repair cases annually, offering fast, personalized support.
• Services include on‑site inspections, repairs, and equipment handling, ensuring your device remains reliable and accurate for years.

Tanita India — Combining Japanese Precision with Local Expertise to Help You Make Better Health Decisions.