Scale Relay
Smart scale to Garmin Connect: setup guides
Garmin Connect does not talk to Xiaomi scales, and it does not import weight from Apple Health either. These guides show how to close that gap from an iPhone, step by step, with the exact model numbers, what gets transferred and what to do when a measurement does not arrive.
Mi Body Composition Scale 2 to Garmin Connect
No Xiaomi account and no pairing: the scale broadcasts, Scale Relay listens. Profile setup, weighing, Garmin sign-in with two-factor codes, what is transferred, troubleshooting.
Read the guide → Setup guide · MJTZC01YMXiaomi Body Composition Scale S400 to Garmin Connect
The S400 encrypts its measurements. One-time Xiaomi authorization instead of extracting keys, why Xiaomi Home must be closed while weighing, and what to do after re-pairing.
Read the guide → ComparisonEvery way to get a Xiaomi scale into Garmin Connect
Scale Relay, MiScale Exporter, export2garmin, SmartScaleConnect, the MyFitnessPal chain, manual entry and the Garmin Index S2, compared on platform, automation, body composition, 2FA and cost.
Compare the options → Setup guide · Any brandApple Health to Garmin Connect: Withings, Renpho, Eufy and any other scale
Withings, Renpho, Eufy, Etekcity, Zepp Life and most other companion apps already save weigh-ins to the Health app. Scale Relay reads them there and relays them to Garmin Connect, with no Bluetooth pairing of its own.
Read the guide →Which Xiaomi scale do you have?
| Scale | Model number | How to tell | What Scale Relay needs |
|---|---|---|---|
| Mi Body Composition Scale 2 | XMTZC05HM | White, 30 × 30 cm, four metal electrodes on the glass, sold since 2019. Pairs with Zepp Life (formerly Mi Fit). | Nothing. Open the app and step on. |
| Xiaomi Body Composition Scale S400 | MJTZC01YM | Sold since 2023, shows heart rate on its display, pairs with Xiaomi Home rather than Zepp Life. | A one-time Xiaomi authorization inside the app. |
| Mi Smart Scale 2 | XMTZC04HM | Same look as the Scale 2 but no electrodes on the glass. | Weight only; it has no impedance sensors, so there is no body composition to transfer. |
The model number is printed on the label on the underside of the scale. If you have another Xiaomi scale, or a different brand entirely, tell us which one; scale requests decide what gets added next.
What every guide covers
- What you need before you start, including the exact scale model and iOS version.
- Each step in the app, from Bluetooth permission to the confirmation that Garmin Connect accepted the measurement.
- A table of what is transferred: weight, BMI, body fat, water, muscle mass, bone mass, visceral fat rating and more.
- Troubleshooting for the three problems that account for almost all support messages: scale not detected, body composition missing, Garmin sign-in.
- Pricing, privacy and what the app does not do, stated plainly.
Get Scale Relay
Read your Xiaomi scale over Bluetooth, or relay weigh-ins from any scale whose app saves them to Apple Health, and send the result to Garmin Connect from your iPhone. Two Garmin syncs are free, then a one-time $14.99 purchase.
Download on the App StoreIndependent app. Not affiliated with Garmin or Xiaomi.
