Most Fitbits are water-resistant, not waterproof — and the difference matters
Fitbit uses the term water-resistant for nearly all its trackers, which means they can handle splashes, sweat, and brief submersion in fresh water. However, waterproof means something stronger: the device can be submerged repeatedly and used in demanding water conditions. Fitbit does not make a fully waterproof tracker. The current lineup includes models rated for shallow water activities like swimming, but none are rated for diving, snorkeling, or saltwater use.
The distinction matters because a water-resistant tracker can fail if you shower with it daily, swim laps in a pool, or spend time in the ocean. A water-resistant rating tells you the maximum depth and duration the device can handle — and what happens if you exceed that limit is on you, not Fitbit's warranty.
Key Takeaways
- Fitbit Charge 6, Inspire 3, Sense 2, and Versa 4 are rated for swimming in fresh water up to 50 meters, but not for diving or saltwater.
- Fitbit Ace LTE and Inspire 2 are splash-resistant only and should not be worn while swimming.
- Water-resistant ratings assume fresh water; chlorine, salt water, and hot water can degrade seals faster than the rating suggests.
- Fitbit's warranty does not cover water damage, even on models rated for water resistance.
Which current Fitbits handle swimming
The Fitbit Charge 6, Inspire 3, Sense 2, and Versa 4 all carry a 5 ATM (50-meter) water-resistance rating. This means they can be submerged in fresh water up to 50 meters deep and are safe to wear while swimming laps or doing water aerobics. Fitbit includes a swim-tracking mode on these models, so the device will count laps and log the workout.
The Fitbit Ace LTE (designed for children) is rated for 3 ATM (30 meters) and can handle splashes and brief submersion, but Fitbit does not recommend wearing it during swimming. The Inspire 2 is splash-resistant only and should be removed before water exposure.
If you own an older Fitbit — such as the Charge 5, Versa 3, or Sense — check the original product documentation or Fitbit's support site for your specific model's rating. Ratings vary across generations.
What 5 ATM actually means in practice
A 5 ATM rating means the device has been tested to withstand water pressure equivalent to 50 meters of depth. However, this does not mean you should dive to 50 meters. The rating assumes static pressure (sitting still underwater), not the dynamic pressure of moving through water or the impact of waves and currents.
In real use, 5 ATM is safe for swimming, snorkeling in shallow water, and water sports in a pool or calm lake. It is not safe for diving, surfing in rough conditions, or any activity where the device experiences sudden pressure changes or impacts.
The rating also assumes fresh water. Chlorine in pools, salt in ocean water, and chemicals in hot tubs can degrade the seals around buttons and the screen faster than fresh water does. If you swim regularly in a pool, rinse the tracker with fresh water afterward.
Water damage and Fitbit's warranty
Fitbit's standard warranty does not cover water damage, regardless of the device's water-resistance rating. If your tracker stops working after water exposure, Fitbit will not repair or replace it for free. This applies even if you stayed within the rated depth and duration.
Some credit cards and homeowner's insurance policies cover accidental damage to electronics, including water damage. Check your coverage before assuming you have no recourse if a water-resistant Fitbit fails.
How to protect a water-resistant Fitbit
If you own a 5 ATM Fitbit and swim regularly, rinse it with fresh water after each pool or ocean session. Dry the band thoroughly, especially if it is made of fabric or silicone, because trapped moisture can cause skin irritation and mold growth.
Avoid exposing the tracker to hot water, steam, or high-pressure water jets (like a shower head). These can force water past the seals even on water-resistant devices. If you shower with your Fitbit, use lukewarm water and avoid directing the stream at the screen or buttons.
Do not attempt to open the device or replace the band with a non-Fitbit band, as this can compromise the water-resistance seal. If the band needs replacement, use an official Fitbit band or a third-party band designed specifically for your model.
Alternatives if you need true waterproof performance
If you dive, snorkel, or spend significant time in saltwater, a Fitbit is not the right choice. Consider a dedicated dive computer or a sports watch rated for diving (typically 10 ATM or higher, and tested for saltwater). These devices are built for the pressure and chemical exposure that water sports demand.
If you want a fitness tracker that also handles water sports, some Garmin models and Apple Watch Ultra are rated higher than Fitbit for water resistance, though they cost more. Check the specific rating and warranty terms before buying.
Frequently Asked Questions
Can I wear my Fitbit in the shower?
If your model has a 5 ATM rating (Charge 6, Inspire 3, Sense 2, Versa 4), you can wear it in a lukewarm shower. Avoid hot water and do not direct the water stream at the screen or buttons. If your model is splash-resistant only (Inspire 2, Ace LTE), remove it before showering.
What happens if water gets inside my Fitbit?
Water inside the device can cause corrosion, short circuits, and permanent failure. If this happens, do not try to charge or use the tracker. Contact Fitbit support, but know that water damage is not covered by warranty. Drying the device in uncooked rice or silica gel for 24 to 48 hours sometimes works, but results are not may provide.
Can I use my Fitbit in saltwater or a hot tub?
Saltwater and chlorine degrade the seals faster than fresh water does. A 5 ATM Fitbit can handle brief saltwater exposure, but rinse it when ready with fresh water afterward. Hot tubs are riskier because heat softens the seals; avoid wearing your Fitbit in water above 40°C (104°F).
Does water resistance get worse over time?
Yes. Seals wear out with age and repeated water exposure. A Fitbit that was water-resistant when new may fail sooner if you use it in water daily for several years. If your tracker is more than three years old and you swim regularly, expect the water resistance to degrade.
Can I swim with an older Fitbit model?
It depends on the model. Check Fitbit's support site or your original product documentation for the water-resistance rating. Many older models (Charge 5, Versa 3, Sense) do have 5 ATM ratings, but some do not. Do not assume an older tracker is water-resistant without confirming the rating first.