In short. InBody makes three home body composition scales: the InBody Dial H20, the InBody Dial H30 and the InBody Dial H40. All three read at the hands and the feet through 8-point measurement, not at the feet alone, and all three send results to the free InBody App. The InBody Dial H20 fits someone who is just starting to track. The InBody Dial H30 fits someone who trains every week and wants automatic user recognition and Wi-Fi sync. The InBody Dial H40 fits a whole household and adds a Leg Muscle Level, growth tracking for children, a leather finish and firmware updates.
Key numbers
The InBody Dial is a wellness device, not a medical device. Talk to a healthcare professional about any health decision.
Side by side, the InBody Dial H20, the InBody Dial H30 and the InBody Dial H40 differ in frequencies (2, 3 and 3), metrics (8, 12 and 15), user recognition and connectivity, and share the 8-point reading at the hands and the feet and the free InBody App. The InBody Dial H30 adds a third frequency, automatic user recognition and Wi-Fi sync over the InBody Dial H20, and the InBody Dial H40 adds a Leg Muscle Level, growth tracking for children, a leather finish and firmware updates over the InBody Dial H30. Every value below comes from the product pages on eu.inbodyshop.com, including the specification, metrics and comparison graphics on those pages, September 2026.
| InBody Dial H20 | InBody Dial H30 | InBody Dial H40 | |
|---|---|---|---|
| The life it fits | Wellness becoming everyday | Sport in your week | Fitness in the household |
| Reads at the hands and the feet (8-point measurement) | Yes | Yes | Yes |
| Frequencies | 2 | 3 | 3 |
| Metrics | 8 essential metrics | 12 advanced metrics | 15 advanced metrics |
| Weight, Skeletal Muscle Mass, Body Fat Mass, Percent Body Fat, BMI, Visceral Fat Level | Yes | Yes | Yes |
| Basal Metabolic Rate, InBody Score | Yes | Yes | Yes |
| Waist Hip Ratio, Soft Lean Mass, Body Balance | No | Yes | Yes |
| Leg Muscle Level | No | No | Yes |
| Growth tracking for children | Not listed | Yes | Yes |
| User recognition | Manual user input, height entered with the dial | Automatic user recognition | Automatic user recognition |
| Connectivity | Bluetooth | Wi-Fi and Bluetooth | Wi-Fi and Bluetooth |
| Syncs to the app with the phone in another room | No | Yes | Yes |
| Firmware updates | No | No | Yes |
| User weight range | 10 to 150 kg | 10 to 150 kg | 10 to 150 kg |
| User height range | 95.0 to 220.0 cm | 53.8 to 279.7 cm | 95.0 to 220.0 cm |
| Dimensions (W x L x H) | 12.2 x 14.0 x 2.3 in | 12.5 x 14.2 x 2.2 in | 12.2 x 14.0 x 2.3 in |
| Device weight | 2.7 kg | 2.5 kg | 2.7 kg |
| Finish | Standard | Standard | Leather |
| Colours | White, Black, Beige | White | Black, Beige |
| App | InBody App, iOS and Android | InBody App, iOS and Android | InBody App, iOS and Android |
| Warranty and returns | 2-year warranty, 1-month return | 2-year warranty, 1-month return | 2-year warranty, 1-month return |
InBody's own FAQ adds one caveat to any comparison: "Available outputs can vary by market and app version" (InBody Europe FAQ, eu.inbodyshop.com/pages/inbody-faq, September 2026). Colours listed are the ones sold on eu.inbodyshop.com.
A home body composition scale is worth buying when the reading is taken at the hands and the feet together, and when you will use the scale every week. InBody home devices use bioelectrical impedance analysis, or BIA: a very small current passes through the body, and the resistance the current meets is used to estimate body composition. A foot-only smart scale sends the current up one leg and down the other, so the upper body is inferred from the lower half. Every InBody Dial reads at the hands and the feet: "Strategically positioned hand and foot electrodes establish consistent measurement starting points and reduce contact resistance" (InBody Technology, eu.inbodyshop.com/pages/inbody-technology, September 2026). The InBody Dial H20 product page puts it plainly: "Most body fat scales measure only half of the body and estimate the rest. The InBody Dial H20 measures both the upper and lower body without estimations" (product page, eu.inbodyshop.com, September 2026). The second thing that matters is the trend, and only weekly readings on the same device show a trend.
The InBody Dial H20 is the entry model for someone who is starting to track. The InBody Dial H20 returns 8 essential metrics: Weight, Skeletal Muscle Mass, Body Fat Mass, BMI, Visceral Fat Level, Percent Body Fat, Basal Metabolic Rate and InBody Score (metrics graphic, product page, eu.inbodyshop.com, September 2026). You enter your height with the dial on the scale, step on to measure your weight, and hold the handle to begin the InBody test; results sync to the InBody App over Bluetooth (product page, eu.inbodyshop.com, September 2026). The InBody Dial H20 measures at 2 frequencies and is sold in white, black and beige (model comparison, product page, eu.inbodyshop.com, September 2026). The whole family can use one InBody Dial H20 (product page, eu.inbodyshop.com, September 2026).
The InBody Dial H30 is the model for someone who trains every week. The InBody Dial H30 reads at the hands and the feet at 3 frequencies and gives 12 advanced metrics (spec graphic, product page, eu.inbodyshop.com, September 2026). Those 12 metrics add Waist Hip Ratio, Soft Lean Mass and Body Balance to the results of the InBody Dial H20 (metrics graphic, product page, eu.inbodyshop.com, September 2026). Results are shown on a splash-resistant backlit LCD screen (product page, eu.inbodyshop.com, September 2026).
The InBody Dial H30 has automatic user recognition, so you step on and the test starts with no manual input, and results sync to the InBody App profile even if the phone is in another room (product page, eu.inbodyshop.com, September 2026). Skeletal Muscle Mass turns "nothing is happening" into "the composition changed and the weight did not". If you are losing weight quickly, the 24-week study covered in Does semaglutide cause muscle loss? A 24-week study measured it shows why Skeletal Muscle Mass is the number to watch.
The InBody Dial H40 is the top of the range, built for a household that measures on one device. The InBody Dial H40 uses the same 3-frequency, hands-and-feet reading as the InBody Dial H30, recognises users automatically, syncs over built-in Wi-Fi and Bluetooth, and tracks children's growth (product page, eu.inbodyshop.com, September 2026). The InBody Dial H40 returns 15 advanced metrics, including Skeletal Muscle Mass, Percent Body Fat, Visceral Fat Level, Waist Hip Ratio, Soft Lean Mass, Body Balance and InBody Score (metrics graphic, product page, eu.inbodyshop.com, September 2026).
Three things belong to the InBody Dial H40 alone in the range. The InBody Dial H40 returns a Leg Muscle Level, a result the InBody Dial H30 and the InBody Dial H20 do not list (product pages, eu.inbodyshop.com, September 2026). The InBody Dial H40 comes in a premium leather finish, in black or beige (product page, eu.inbodyshop.com, September 2026). The InBody Dial H40 receives firmware updates (product page, eu.inbodyshop.com, September 2026).
No, not number for number. InBody's FAQ states the reason in one line: "For comparable results, test under consistent conditions: at a similar time, before eating or exercising, after using the restroom, and on a hard, level floor" (InBody Europe FAQ, eu.inbodyshop.com/pages/inbody-faq, September 2026). Every BIA device, including the InBody Dial, estimates body composition from how a small current travels through the body at that moment, so the reading reflects your condition at the time of the test. Results from different devices are not directly comparable, and results from the same device are only comparable when the test conditions match. The InBody Dial is designed to track your own change over time, at home, under the same conditions each week.
Seven things change a BIA reading on any device, including the InBody Dial:
Two tests taken on the same day are still not taken under identical conditions, so a difference between two results on its own does not point to a fault in either device. Devices also differ in where they read and in the formula behind the result. Use one device, keep the conditions the same, and compare this week's reading with last week's.
Choose the InBody Dial H20 to start, the InBody Dial H30 for weekly training, and the InBody Dial H40 for a household; the five questions below settle it, and the first "yes" is the answer.
A home body composition scale will not diagnose, treat or monitor any medical condition. The InBody Dial is a wellness device, not a medical device, and does not replace a clinical assessment. BIA is an estimate, not a reference method such as DEXA, and earns its place by being repeatable and easy to do often. InBody's guidance is to test under consistent conditions: at a similar time, before eating or exercising, after using the restroom, and on a hard, level floor (InBody Europe FAQ, eu.inbodyshop.com/pages/inbody-faq, September 2026). Compare a result to your own previous results on the same device, never to someone else's.
The best home body composition scale for most people reads at the hands and the feet together and gets used every week. Every InBody Dial reads at the hands and the feet through 8-point measurement; the InBody Dial H20 fits starting out, the InBody Dial H30 an active week, the InBody Dial H40 a whole household.
Match the InBody Dial model to your stage, not to the longest feature list. Starting out, the InBody Dial H20. Training every week, the InBody Dial H30. Fitness across the household, the InBody Dial H40.
The InBody Dial H30 and the InBody Dial H40 share the 3-frequency, hands-and-feet reading, automatic user recognition, Wi-Fi sync, Waist Hip Ratio, Soft Lean Mass and Body Balance. The InBody Dial H40 adds a Leg Muscle Level, growth tracking for children, a leather finish in black or beige and firmware updates, for 15 advanced metrics against 12 (product pages, eu.inbodyshop.com, September 2026). If you want the training numbers, the InBody Dial H30 is enough.
An 8-point scale reads at the hands and the feet together, so the current covers the whole body rather than inferring the upper half. Reading at the hands and the feet is a design difference, not a promise of clinical accuracy; treat any home BIA reading as an estimate and watch the trend on one device.
InBody's FAQ answers this directly: "Both provide core body composition measurements. The H30 adds features such as automatic user recognition, Wi-Fi syncing and additional metrics" (InBody Europe FAQ, eu.inbodyshop.com/pages/inbody-faq, September 2026). On the product pages that is 8 essential metrics at 2 frequencies for the InBody Dial H20 against 12 advanced metrics at 3 frequencies for the InBody Dial H30. Measure once a week under the same conditions on either model.
The gym device and the home device are different instruments, and the two tests were taken under different conditions. BIA readings change with time of day, food and drink, exercise, clothing, posture and electrode contact. Track your change on the InBody Dial week to week under the same conditions; that trend is the number to watch.
Written by the InBody Home team. Last reviewed: .
The InBody Dial is a wellness device, not a medical device. The InBody Dial does not diagnose, treat or monitor any condition. Talk to a healthcare professional about any health decision.
Cuando el peso baja rápidamente, la báscula te dice cuánto has perdido, no qué has perdido. Para ver la diferencia, sigue el Percent Body Fat y la Skeletal Muscle Mass una vez por semana desde la primera semana, con una báscula que mide en las manos y los pies. En una pérdida de peso rápida, la mayor parte de lo perdido es grasa, pero una proporción medible es músculo, y esa proporción cambia sobre todo en las primeras cuatro semanas.
