Fitbit Inspire 3 vs Fitbit Charge 6
Both are good picks with different strengths. The Fitbit Inspire 3 lasts longer (10 days) and is lighter, while the Fitbit Charge 6 has built-in GPS.
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Key differences
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Battery life
Fitbit Inspire 3 wins
The Fitbit Inspire 3 lasts up to 10 days against 7 days.
-
GPS
Fitbit Charge 6 wins
Only the Fitbit Charge 6 has built-in GPS.
-
Display
Evenly matched
Both have AMOLED screens of a similar size.
-
Health
Evenly matched
Much the same health sensors.
-
Weight
Fitbit Inspire 3 wins
The Fitbit Inspire 3 is lighter: 17.69 g against 30 g.
Which one should you choose?
Choose the Fitbit Inspire 3 if…
- You hate charging: it's rated for up to 10 days in smartwatch mode.
- You wear it to bed or have small wrists: it weighs 17.69 g.
Choose the Fitbit Charge 6 if…
- You want to leave your phone at home on a run: it has built-in GPS.
- You want to track stress: it has an EDA sensor.
- You want heart-rhythm checks: it can record an ECG.
Full spec comparison
The Fitbit Inspire 3 leads on battery life and size and durability, while the Fitbit Charge 6 leads on GPS and navigation.
Green cells with a ✓ mark the better spec in that row. Tick "Show differences only" to hide the rows where they match.
Overview
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Brand | ||
| Series | Inspire | Charge |
| Colours | Midnight Zen, Lilac Bliss, Morning Glow | Coral/Champagne Gold Aluminum |
Platform & apps
Both work with the same phones and software.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Works with | iPhone and Android | iPhone and Android |
| Minimum iOS | iOS 16.4 | iOS 16.4 |
| Minimum Android | Android 11 | Android 11 |
| Software support | 2 years | — |
| Subscription | — | Optional |
| Subscription name | — | Google Health Premium |
| Subscription features | — | Daily Readiness Score, Stress Management Score, in-app coaching built with Gemini |
Display
The screens are closely matched.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Display type | AMOLED | AMOLED |
| Screen size | — | 1.04 in |
| Resolution | 124 x 208 | — |
| Colour display | Yes | Yes |
| Always-on display | Yes | Yes |
| Touchscreen | — | Yes |
| Controls | — | touchscreen, buttons |
Design & durability
The Fitbit Inspire 3 is ahead on size and durability.
It is lighter, and the Fitbit Charge 6 doesn't beat it on anything here.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Case shape | — | Band |
| Dimensions | 39.32 x 18.6 x 11.75 mm | 36.73 x 23.09 x 11.2 mm |
| Thickness | 11.75 mm | 11.2 mm |
| Weight (case) | 17.69 g | 30 g |
| Case material | — | Aluminum |
| Lens | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Band material | silicone | silicone |
| Fits wrists | 130-220 mm | 130-211 mm |
| Water resistance | 5 ATM | 5 ATM |
| IP rating | IP68 | IP68 |
| Water standard | — | ISO 22810:2010 |
| Operating temperature | 0 to 40 °C | -10 to 45 °C |
| Max altitude | 8,534 m | 8,534 m |
Battery
The Fitbit Inspire 3 is ahead on battery life.
It lasts longer (10 days), and the Fitbit Charge 6 doesn't beat it on anything here.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Battery (smartwatch mode) | 10 days | 7 days |
| All battery modes | Battery saver: 10 days | Smartwatch: 7 days |
| Battery type | Lithium-polymer | Lithium-polymer |
| Charging | — | proprietary-plug |
| Full charge time | 120 min | 120 min |
GPS & navigation
The Fitbit Charge 6 is ahead on GPS and navigation.
It has built-in GPS, and the Fitbit Inspire 3 doesn't beat it on anything here.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| GPS | Uses phone GPS | Built-in |
| Multi-band GPS | No | — |
| Satellite systems | — | GPS, GLONASS |
| Navigation features | — | turn-by-turn |
Health & sensors
The Fitbit Charge 6 is ahead on health tracking.
It has an EDA stress sensor, and the Fitbit Inspire 3 doesn't beat it on anything here.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Sensors | accelerometer, optical HR, SpO2, ambient light, thermometer | optical HR, ECG electrode, SpO2, skin temperature, EDA |
| Heart-rate tracking | 24/7 | 24/7 |
| ECG | — | Yes |
| Irregular rhythm alerts | — | Yes |
| High/low heart-rate alerts | — | Yes |
| Heart-rate variability | Yes | — |
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | Yes | Yes |
| Respiration rate | — | Yes |
| Sleep tracking | — | Sleep score |
| Stress tracking | — | Yes |
| Readiness score | — | Daily Readiness Score |
| Cycle tracking | — | Yes |
Training
Training features are evenly matched.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Sport profiles | — | 40 |
| Auto activity detection | — | Yes |
| Training metrics | — | VO2 max, training load |
| Adaptive coaching | — | Yes |
| Heart-rate broadcast | — | Yes |
| External sensors | — | Bluetooth Heart Rate Profile exercise machines |
Smart features
Both offer much the same smart features.
| Spec | Fitbit Inspire 3 | Fitbit Charge 6 |
|---|---|---|
| Notifications | Yes | Yes |
| Contactless payments | — | Yes |
| Payment service | — | Google Wallet |
| Offline music apps | — | YouTube Music |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 |
| Find my phone | — | Yes |