Fitbit is dedicated to developing the most accurate wrist-based activity trackers on the market. Our team has performed multiple internal studies to rigorously test the accuracy of the Fitbit Force™. Through our testing, we have confirmed that Force is one of the most accurate wireless tracking devices designed specifically for your wrist.
Why is my Force step count different than my count on other Fitbit products?
Force has been tested extensively against our clip-based devices like the Fitbit One™ and Fitbit Zip™. That said, because Force is specifically designed for your wrist, if you move your body a lot and not your arms (or vice versa), you may get a slight difference in activity than you would see on your clip-based trackers. Additionally, since you’re more likely to wear Force 24/7, you may count a few more steps.
Why do I get extra steps sometimes?
Fitbit trackers have a finely tuned algorithm for step counting. The algorithm is designed to look for intensity and motion patterns that are most indicative of people walking and running. When working at a desk, cooking, or doing other arm movements, the tracker can pick up some extra steps if it thinks you are walking. Many of these situations—such as working or cooking—do include steps in between stationary periods so the tracker tries to give you credit for those steps.
For the vast majority of customers, the amount of stray steps accumulated is negligible when compared to the entire day.
Why do I get extra floors sometimes?
Your Force detects floors using an altimeter, which is a sensor that calculates altitude based on atmospheric pressure. Though your Force is designed to look for pressure changes based on elevation gains, pressure changes due to other causes—such as a gust of wind, a weather change, or opening a door—can occasionally cause your Force to register an extra floor or two.
Another factor is floor height. Your tracker registers one floor when you've gone up about ten feet, which is the average between residential and commercial floor heights. If you climb long staircases, you may find that the tracker's floor count doesn't match how many floors you've gone up since the staircase was taller than ten feet.
Will Force count steps when I’m pushing a stroller or a shopping cart?
Force will count your steps when you are pushing a stroller or a shopping cart because we do want to give you credit for this activity. That said, because your hands are not moving, your step count may be a bit lower during this activity.
Will my Force pick up steps when I’m in the car or riding a vehicle somewhere?
Force is a smart device that has been designed not to pick up your steps in these activities. It has been tested against driving, buses, trains, and other public transportation and should not give you extra steps when you’re traveling. On bumpy roads you may get extra steps but these shouldn't make a big difference in your overall stats.
How can I make my Force tracking more accurate?
You can improve the accuracy of your Force by changing the Dominant Hand setting. To do so, log into your fitbit.com dashboard, click on the gear icon in the top right, and go to Settings > Devices. Changing this setting to "Dominant" will decrease the sensitivity of step counting and should reduce any over counting of steps when your body is not moving. The "Non Dominant" setting will increase the sensitivity of step counting, and we recommend this setting if your Charge HR is not counting enough steps.
If you feel that your step count is inaccurate, you may want to manually adjust the stride length that we calculate automatically. For more information see How do I measure and adjust my stride length?