Fitbit Charge 6 vs Whoop 4.0
Fitbit Charge 6 (2023, listed at $159) and Whoop 4.0 (2023, listed at $239) are both fitness bands, so the choice comes down to specifics.
Specs last updated · prices are list prices
Fitbit Charge 6
The most full-featured fitness band — built-in GPS, ECG and Google Maps on the wrist.
Whoop 4.0
Screen-free recovery and strain coaching — the choice of pro athletes (subscription required).
The verdict
On the numbers we track, Fitbit Charge 6 wins on battery life (7 days vs 5 days), weight (23 g vs 27 g), price ($159 vs $239) and tracked features (6 vs 1); Whoop 4.0 wins on water rating (10ATM vs 5ATM).
Bottom line: on raw specs the Fitbit Charge 6 leads 4 to 1, but five spec categories are only a starting point. Match it to your phone, your main sport and your budget before you decide, or run the free quiz to see how each ranks for your answers.
Spec by spec
| Spec | Fitbit Charge 6 | Whoop 4.0 |
|---|---|---|
| Battery (rated) | 7 days | 5 days |
| Weight | 23 g | 27 g |
| List price | $159 | $239 |
| Water rating | 5ATM | 10ATM |
| Tracked features | 6 | 1 |
| Case size | 36 mm | 32 mm |
| Display | AMOLED | E-ink |
| Works with | both iPhone and Android | both iPhone and Android |
| Listed best for | everyday wellness, health tracking and gym and strength work | health tracking, gym and strength work and running |
| Released | 2023 | 2023 |
Trophy marks the better value on the five measurable specs. Battery is the manufacturer's rating, not our test. How we score is on the methodology page.
Feature overlap
Both have (1)
- blood-oxygen (SpO₂)
Only Fitbit Charge 6 (5)
- built-in GPS
- ECG
- contactless payments
- AMOLED display
- swim tracking
Only Whoop 4.0 (0)
Nothing unique.
Which one should you pick?
Pick the Fitbit Charge 6 if…
- You want to spend less: it lists for $80 less.
- You want fewer charges: about 7 days per charge vs 5 days.
- You want a lighter watch: 23 g vs 27 g.
- You need built-in GPS, ECG, contactless payments, AMOLED display and swim tracking, which the Whoop 4.0 does not list.
- Your main use is everyday wellness: it is listed for that and the Whoop 4.0 is not.
Skip it if…
- • You want a big, easy-to-read screen — the case we list is only 36 mm.
Pick the Whoop 4.0 if…
- Your main use is running: it is listed for that and the Fitbit Charge 6 is not.
- You might switch phones: it works with both iPhone and Android, the Fitbit Charge 6 only works with Android.
- You swim or paddle: 10ATM vs 5ATM.
Skip it if…
- • You want to run or ride without your phone — it has no built-in GPS.
- • You want a big, easy-to-read screen — the case we list is only 32 mm.
Frequently asked questions
Which has better battery life, the Fitbit Charge 6 or the Whoop 4.0?
The Fitbit Charge 6 has the longer rated battery life: about 7 days per charge against 5 days. These are manufacturer ratings; heavy GPS, always-on display and cellular use will cut both.
Which is cheaper, the Fitbit Charge 6 or the Whoop 4.0?
The Fitbit Charge 6 has the lower list price: $159 against $239 in our database. List prices change often, so check Amazon for today's price.
Do the Fitbit Charge 6 and Whoop 4.0 work with iPhone and Android?
Yes, they have the same phone support: both iPhone and Android.
Which is better for swimming, the Fitbit Charge 6 or the Whoop 4.0?
Fitbit Charge 6: 5ATM is suitable for showering and pool swimming, but not for high-speed water sports or diving. Whoop 4.0: 10ATM is suitable for swimming and surface water sports. It is not a dive rating unless the maker says so.
Not sure either is right for you?
Nine questions about your phone, sport, wrist and budget, scored against all of our watches with the reasoning shown.
Take the free quizWhere each one ranks #1 in our quiz
Fitbit Charge 6
Whoop 4.0
It is not the top pick for any standard quiz profile.