If you have been researching InBody analyzers using older comparison articles, you have probably been comparing models that are no longer the current line.
InBody refreshed its professional range. The 570 was superseded by the 580, and the 270 by the 270S. Plenty of guides still built around the 270, 570, and 770 describe a lineup that has moved on, which is why quoted specifications and prices often fail to match what a dealer sends you.
The current professional line is the 270S, 380, 580, 770S, 970S, and BWA 2.0. This guide covers what these machines actually measure, where the meaningful dividing line in the range sits, and how to work out which tier a facility needs.
Where we stand: Elite Sauna Direct is not an authorized InBody dealer and we do not sell these analyzers. Buyers ask us about equipment we do not carry, and an outside explainer is more useful than a distributor's page. Figures below come from InBody published materials and authorized regional listings. This is not medical advice.
What an InBody Test Measures
Understanding four concepts makes the entire lineup legible, because the tiers are essentially defined by which of them a machine can do.
Bioelectrical impedance, briefly
A small alternating current is passed through the body and the resistance to it is measured. Lean tissue holds a great deal of water and conducts well; fat conducts poorly. From the impedance figures the device estimates fat mass, lean mass, and body water.
The important word is estimates. This is an indirect measurement, and its accuracy depends heavily on how the current is applied and how many measurements are taken.
Multi-frequency and segmental analysis
This is where InBody separates itself from a bathroom scale that quotes a body fat percentage.
Consumer scales typically run a single frequency through your feet and infer the rest of you from a statistical model. InBody's professional analyzers use multiple frequencies across five body segments, measured separately: both arms, both legs, and the trunk. Different frequencies penetrate cell membranes differently, which is what allows intracellular and extracellular water to be distinguished rather than lumped together.
The practical consequence is segmental data. You can see that someone's left leg carries less lean mass than the right, which matters enormously in rehabilitation and is invisible on a whole-body number.
Phase angle
Phase angle is derived from the relationship between resistance and reactance in the measurement. In broad terms it reflects cell membrane integrity and cellular health, and it is used as a marker in athletic performance monitoring and in clinical settings.
It is influenced by age, sex, body composition, hydration status, and health conditions, which is why there is no single universal figure that counts as good. If you are looking at your own phase angle result and wondering what it means, that interpretation belongs with the practitioner who ran the test or with your physician, not with a specification sheet. Trend over time in one individual is generally more informative than a single value compared against a population range.
For equipment selection, what matters is simpler: not every model measures it.
Water compartment analysis
The ratio of extracellular water to total body water. Used clinically as an indicator of fluid balance, and relevant in oncology, cardiology, bariatrics, and rehabilitation contexts. Like phase angle, it is a higher-tier capability rather than a universal one.
The Lineup, and Where the Real Dividing Line Sits
Ignore the model numbers for a moment. The range splits into two groups.
Below the line sit the 270S and 380: three-frequency BIA with five-segment analysis, producing solid body composition data for fitness and general wellness tracking.
Above the line sit the 580, 770S, and 970S, which add phase angle and full body water compartment analysis.
That capability step is the decision. Everything else is screen size, throughput, and portability.
InBody 270S
Portable and battery-powered, which is the whole point. It folds down, moves between sites, and runs corporate testing events or multi-location practices. Three-frequency, five-segment analysis. Listed by InBody USA around 7,855 dollars.
InBody 380
Mains-powered, built for higher daily volume, with wireless printing. Same measurement class as the 270S but designed to sit permanently in one location and handle a queue. Listed around 10,855 dollars.
The 270S versus 380 choice is not about data. It is about whether the machine travels.
InBody 580
The model that replaced the 570, and the entry point to phase angle and water compartment analysis. Listed around 17,115 dollars.
This is the meaningful upgrade in the range. If your facility works with athletes, rehabilitation patients, or anyone where cellular health tracking is part of the offer, this tier is where that becomes possible. For straightforward gym member progress tracking, the 380 does the job at a substantially lower number.
InBody 770S
The clinical standard, with a larger screen for on-the-spot analysis, higher weight capacity, and validated use across hospital departments. Listed around 23,705 dollars.
InBody 970S
The flagship, running multi-frequency measurement up to 3MHz for the most complete clinical dataset in the range. Aimed at research and specialist hospital departments rather than commercial facilities. Listed around 32,605 dollars.
BWA 2.0
A body water analyzer rather than a general composition machine, for applications where fluid status is the primary question. Listed around 27,405 dollars.
The range at a glance
| Model | Phase angle | Power | Typical setting | Listed price |
|---|---|---|---|---|
| 270S | No | Battery, portable | Multi-site, events, corporate | About $7,855 |
| 380 | No | Mains | Gyms, permanent installation | About $10,855 |
| 580 | Yes | Mains | Sports performance, rehab, premium studios | About $17,115 |
| 770S | Yes | Mains | Clinical and hospital | About $23,705 |
| 970S | Yes | Mains | Research, specialist clinical | About $32,605 |
| BWA 2.0 | Yes | Mains | Fluid status applications | About $27,405 |
Worth noting that InBody publishes these figures openly, which is unusual in professional equipment where quote-only pricing is the norm. Regional pricing, configuration, and dealer terms will vary, so treat these as orientation rather than a quote.
If You Are Searching for the InBody 570
Short answer: look at the 580.
The 570 established this tier and built the brand's reputation in fitness and sports settings. It has been succeeded by the 580, which occupies the same position in the current range as the entry point to phase angle and water compartment analysis.
If you are looking at a used 570, the questions worth asking are about support life, parts availability, and software compatibility, since the surrounding platform continues to move. A used professional analyzer that cannot connect to current data management is a diminished asset even if it measures accurately.
InBody Compared With a DEXA Scan
A recurring comparison, and one where the honest answer is that they are different instruments for different jobs.
DEXA uses low-dose X-ray absorptiometry and is generally treated as the reference standard for body composition, and it measures bone density, which BIA cannot do at all. It also requires a clinical facility, a trained operator, an appointment, and involves a small radiation dose.
BIA takes under a minute, involves no radiation, costs nothing per test once the machine is bought, and can be repeated as often as you like.
That last point is the real distinction. DEXA gives you a more authoritative single snapshot. BIA gives you a trend, because you can test weekly rather than annually. For tracking change in a person over time, frequency is often worth more than absolute precision, provided testing conditions stay consistent.
Conditions matter more than people expect. Hydration, recent food, recent exercise, and time of day all shift a BIA result. Testing at the same time under the same conditions is what makes the trend meaningful.
InBody Compared With Consumer Smart Scales
Devices like the Hume Health Body Pod and other consumer body composition scales occupy a different category, and comparisons between them and a professional InBody are frequently framed unfairly in both directions.
Consumer devices are cheap, live in your bathroom, and measure daily. Their limitations are architectural rather than a matter of build quality: fewer frequencies, fewer measurement segments, and in foot-to-foot designs, an inference about your upper body rather than a measurement of it.
Professional analyzers measure each segment directly with multiple frequencies, which is what produces limb-by-limb data and, at the higher tiers, phase angle.
The reasonable framing: a consumer scale is a good personal trend tool. A professional analyzer is an instrument you build a service around, produce printed reports from, and use in clinical or performance settings. If you are buying for yourself, the professional tier is difficult to justify. If clients are paying for the assessment, it is not.
InBody also sells an at-home line, including the Dial H40, Dial H30, and H20N, which sits between these positions.
Choosing by Facility Type
Gym or fitness centre tracking member progress. The 380 for a fixed installation, the 270S if it needs to move. Phase angle is a capability most member-facing programmes will not use.
Sports performance or athlete monitoring. The 580, because phase angle and segmental lean mass are the reason you are testing at all.
Physical therapy or rehabilitation. The 580 at minimum. Segmental analysis showing asymmetry between limbs is directly clinically useful.
Clinical or hospital. The 770S is the standard. The 970S for research and specialist departments.
Corporate wellness across sites. The 270S, on portability alone.
Wellness studio adding a paid assessment service. Model the revenue first. Assessment fees, package attachment, and retention effects determine which tier the business case supports, and that calculation should come before the specification comparison.
What the Price Does Not Include
Four costs that are easy to miss when comparing headline figures.
Software and data management. Cloud database management and data integration are typically licensed separately. For a facility tracking clients over time, this is not optional.
Printing. Result sheets are a large part of the perceived value for a paying client. Budget the printer and its consumables.
Staff training. A result sheet handed over without interpretation undersells the service and can worry clients unnecessarily. InBody publishes result sheet interpretation guides per model, and staff time to learn them is a real cost.
Space and testing protocol. Consistent results require consistent conditions, which in practice means a dedicated spot and a written protocol about hydration and timing.
Where InBody Is Not the Answer
Personal use. Professional analyzers start near eight thousand dollars. For individual tracking, the at-home line or a consumer scale is the rational purchase.
You need bone density. BIA cannot measure it. That is DEXA territory and no amount of budget changes it.
Nobody will interpret the results. An analyzer producing reports nobody can explain generates confusion rather than value. The instrument is only as good as the conversation after it.
You want a single definitive number. BIA is best used as a trend instrument under controlled conditions. If you need one authoritative measurement, that is a different tool.
Common Questions
What replaced the InBody 570?
The InBody 580 occupies that position in the current professional range.
Which models measure phase angle?
The 580, 770S, and 970S. The 270S and 380 do not.
What is the difference between the 270S and the 380?
Both use three-frequency BIA with five-segment analysis. The 270S is battery-powered and portable; the 380 is mains-powered for higher volume with wireless printing.
How much does an InBody cost?
InBody USA lists the 270S around 7,855 dollars and the 970S around 32,605 dollars, with the rest of the range between. Regional pricing and configuration vary.
Is InBody as accurate as DEXA?
DEXA is generally treated as the reference standard and also measures bone density. BIA is faster, radiation-free, and repeatable, which makes it better suited to frequent trend tracking under consistent conditions.
What is phase angle?
A measure derived from resistance and reactance, associated with cell membrane integrity. Values are influenced by age, sex, body composition, and hydration, so interpretation of any individual result belongs with a qualified practitioner.
How is this different from a smart scale?
Professional analyzers measure five body segments directly across multiple frequencies. Most consumer scales use fewer frequencies and infer upper body values rather than measuring them.
Does InBody make a home device?
Yes, including the Dial H40, Dial H30, and H20N.
Does Elite Sauna Direct sell InBody?
Not at present. We are not an authorized InBody dealer. This guide is editorial. To buy, contact InBody or an authorized dealer.
Specifying an Analyzer for Your Facility?
The decision reduces to one question asked in the right order: do you need phase angle and water compartment analysis? Answer that and you are choosing between two models rather than six. Everything after it is portability and throughput.
We are assessing demand for body composition and assessment equipment. If you are specifying an analyzer, tell us your facility type, expected tests per week, whether the machine needs to move between sites, and whether you are charging for assessments. We will give you a straight read on which tier those answers point to, flag anything in the plan that suggests a different approach, and let you know if our availability in this category changes.
If you already know what you need, contact InBody or an authorized dealer directly.
Request a Quote and Availability | Speak with a specialist
This article is informational and is not medical advice. Body composition analysis is not a diagnostic tool. Individual results, including phase angle and body water values, should be interpreted by a qualified healthcare practitioner in the context of your overall health.
InBody is a trademark of its respective owner, as are any other brands referenced. Elite Sauna Direct is not affiliated with, endorsed by, or an authorized dealer of InBody. Specifications and prices cited reflect published figures at time of writing and should be confirmed before purchase.
