--- title: "Keep your Fitbit data flowing into Carb Manager" slug: "keep-your-fitbit-data-flowing-into-carb-manager" updated: 2026-11-04T18:10:52Z published: 2026-11-04T18:10:52Z canonical: "help.carbmanager.com/keep-your-fitbit-data-flowing-into-carb-manager" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.carbmanager.com/llms.txt > Use this file to discover all available pages before exploring further. # Keep your Fitbit data flowing into Carb Manager To keep your steps and activity showing up in Carb Manager, you'll need to reconnect your Fitbit using your Google account. It only takes about a minute, and your data picks up right where it left off. **Note:** Syncing with Fitbit/Google Health requires a **Premium subscription**. For details about which data syncs, see [Sync wellness data between Fitbit/Google Health and Carb Manager](https://help.carbmanager.com/docs/sync-wellness-data-between-a-fitbit-device-and-carb-manager). ## Why do I need to reconnect? Google is retiring the older connection that apps like Carb Manager use to receive Fitbit data and replacing it with a newer, more secure one. Your existing connection can't be moved over automatically, so we need your permission again. **Already reconnected through Google Health?** You don't need to reconnect again if some steps are missing. Just open the missing days in your daily log (see Troubleshooting below). ## Will I lose my data? Your Fitbit data isn't lost. As long as you keep syncing your device to the Google Health app, it's still there. If you don't reconnect, your Fitbit activity will stop appearing in Carb Manager once Google turns off the old connection. **What about my food logs?** Carb Manager isn’t sending food, recipe, or meal data to Google Health right now. That comes back with an upcoming Carb Manager update. Your activity, weight, and sleep data still sync into Carb Manager once you reconnect. ## Why are my calories burned different? Carb Manager now uses Google Health's active calories. That's Google's estimate of the calories you burn through activity across the whole day, above the calories your body burns at rest. For many members, this is lower than what the old Fitbit connection added, so active days may add fewer calories and carbs to your daily budget than before. Your step counts now match the Fitbit app, and numbers on workout days may change a little. The calories in Carb Manager won't match the total in Google Health, which includes the calories you burn at rest. If your numbers look low, check that your height, weight, age, and sex are up to date in your Google Health profile, since Google uses them to work out your resting burn. ## How to reconnect 1. **Before you start:** make sure you can sign in to the Google Health app with your Google account. If you still use a Fitbit login, [move your Fitbit account to Google first](https://support.google.com/googlehealth/answer/14237024?hl=en). Then make sure Carb Manager is updated to the latest version. If the update isn’t showing in your app store yet, check again shortly. 2. Open **Carb Manager** and tap **Settings**. 3. Tap **App Settings**, then go to the **Health & Fitness Device Links** section. 4. Select **Fitbit**, then tap **Connect**. 5. Sign in with the Google account linked to your Fitbit. 6. Select **all** (or select the specific health data you want to share), then tap **Continue**. ## On iPhone? You can also sync through Apple Health If you use Carb Manager on an iPhone, you can bring your Fitbit data in through Apple Health instead. Google says this route isn't affected by the change to the old Fitbit connection. **Before you start:** your iPhone needs iOS 16.4 or later, and the Google Health app should be updated to the latest version. 1. Open the **Google Health** app. At the top left, tap **Connections**, then tap **Apps and services**. 2. Under **Add connections**, tap **Apple Health**, then tap **Get started**. 3. Tap **Agree**, then tap **Turn All Categories On** (or select the categories you want and tap **Allow**). Tap **Done**. 4. In Carb Manager, tap **Settings** > **App Settings** > **Health & Fitness Device Links**, select **Apple Health/Watch**, and follow the on-screen steps to let Carb Manager read your data. 5. If your iPhone also counts steps, choose which source Apple Health uses. In the Health app, open a category (such as Steps), tap **Data Sources & Access**, and drag your preferred source to the top. **Note:** Use one route for your Fitbit data. If you sync through Apple Health, disconnect **Fitbit** under **Health & Fitness Device Links** so your activity isn't counted twice. For details about which data syncs, see [Sync wellness data between Apple Health/Apple Watch and Carb Manager](https://help.carbmanager.com/docs/sync-wellness-data-between-apple-healthapple-watch-and-carb-manager). ## Troubleshooting **Fitbit stopped syncing?** If you haven't reconnected since Google's change, the old connection has been turned off, so you'll need to disconnect and reconnect Fitbit. Follow the steps under **How to reconnect** above. Once you're reconnected, open the Google Health app on your phone and sync your device, then open Carb Manager to refresh your dashboard. If you've already reconnected through Google Health, you don't need to do it again. See **I'm connected, but my data isn't showing** below. - **I don't see the new sign-in, or Connect isn't working:** Update Carb Manager to the latest version. If the update isn't showing in your app store yet, check again shortly. - **I still sign in to Fitbit with a Fitbit login:** [Move your Fitbit account to Google](https://support.google.com/googlehealth/answer/14237024?hl=en) first, then reconnect. - **Some data is missing (for example, sleep or weight):** Reconnect Fitbit and select **all** on the permissions screen. Anything you don't select won't sync to Carb Manager. - **I connected the wrong Google account:** In **Health & Fitness Device Links**, disconnect Fitbit, then connect again using the Google account linked to your Fitbit. - **I'm connected, but my data isn't showing:** You don't need to reconnect. Make sure your device has synced in the Google Health app. Then, in Carb Manager, open that day in your daily log. Carb Manager brings in your data for each day you open. If the day still looks empty, switch to another day and back. It can take a second or two. To fill in past days, open each one. - **I use Apple Health on iPhone, and my data isn't updating:** Update the Google Health app. In the Health app, tap **Sharing** > **Apps** and check that Google Health and Carb Manager still have access. If you reinstalled the Google Health app, connect it to Apple Health again. Still stuck? Our support team is happy to help. Just [reach out](mailto:support@carbmanager.com), and we'll walk you through it.