InBody R20

When this test is useful

R20 looks like a bathroom scale, but adds hand electrodes. The test uses both hands and feet and works with individual body segments. This older compact model still appears in Czech services. Before booking, ask whether you receive the full computer report or only the basic values. Do not shorten R20 to “20” or assume that it is R20B. Documentation distinguishes cable and Bluetooth variants. For your history, it also matters whether the provider’s original software still works.

What the results tell you

The display provides weight, fat and skeletal muscle mass, percent body fat, BMI and BMR. Start with fat in kilograms alongside the percentage: the percentage is a share of total weight, so water changes can affect it too. One lower display value is not a longer-term outcome.

The brochure distinguishes the basic display from the more detailed Lookin’Body Basic report, which adds lean and fat distribution. Check whether this report is available when booking. Segmental lean values include water and other non-fat tissue rather than muscle alone.

The extended software adds TBW and FFM. These can help explain a rapid difference between visits, particularly when preparation changed. Total water alone does not replace ECW/TBW or an assessment of the cause of swelling.

BMR estimates resting energy requirements. Additional software suggestions can start a consultation, but are not a diet or training plan. An appropriate approach also depends on activity, experience and health context.

The brochure lists an estimated waist-to-hip ratio, WHR, in Lookin’Body Basic. It is not visceral area in cm². Add a consistently taken tape measurement of your waist for everyday monitoring; it helps relate the result to changes in body shape.

How the device measures

You stand on the base and hold the hand electrodes away from the trunk. Bioimpedance measures electrical properties of limbs and trunk to estimate water, fat-free mass and fat. Weight-only mode is different: without correctly holding the electrodes, you do not obtain the same body composition analysis.

Test procedure and preparation

For repeat tests, keep time of day and conditions after food, drink and activity similar. Use the toilet and stand quietly beforehand. Step onto the base barefoot; palms and thumbs must contact the hand electrodes correctly. Declare a pacemaker or another electronic medical device beforehand; the original R20 manual prohibits use in this situation.

Limitations and influences

The original brochure range ends at 150 kg. Check the specific unit when booking near that limit; specifications of larger InBody devices do not apply here. Some useful values depend on legacy computer software. The display, stored history and printed software report can contain different information. The verified standard brochure sheet does not list phase angles, ECW/TBW or a separate visceral fat output. General claims about the brand’s technology do not establish those outputs.

Choosing a device and service

R20 is more compact and relies on original software for its detailed sheet. 120 and 270 have a different design and higher weight ranges. 270S adds whole-body phase angle; compare 770S or 970S for more detailed water analysis. Choose by the complete report rather than the number of values that fit on a display.

Specifications: InBody R20

Recording time

30 s

Body weight range

10–150 kg

Device weight

3 kg

Measurement frequencies

20, 100 kHz

Contact electrodes

8

Measurement position

Standing

Operating temperature

10–40 °C

Compare models

Where to get tested

Locations with a documented device. Each location detail describes its service and conditions.

Frequently asked questions