WatchFitTool

Fitbit Watch Sizes & Specifications

10 Fitbit models with case dimensions. Set your wrist width below to see which of them actually fit before you shop.

Models
10
Case shapes
10 round
Newest
2024
Oldest
2017

Every Fitbit model, measured

Set your wrist width and the table tells you where each of the 10 measured models lands — how much clearance you get per side, and which ones hang over the edge. Open a row for its full spec sheet.

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Which of these fits your wrist?

55.0mm

Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.

10 of 10 models sit on this wrist without the lugs hanging over the edge.

ModelYour FitWidthOffer
Balanced5.1mm clear41.04mmCheck offer
Balanced7.3mm clear40.4mmCheck offer
Balanced7.3mm clear40.5mmCheck offer
Balanced7.3mm clear40.4mmCheck offer
Balanced7.3mm clear40.4mmCheck offer
Balanced7.5mm clear40mmCheck offer
Balanced7.5mm clear40mmCheck offer
Balanced7.5mm clear40mmCheck offer
Balanced8.2mm clear38.6mmCheck offer
Balanced6.5mm clear42mmCheck offer

The Fitbit extremes, ranked

Smallest Fitbit Watches

The most compact Fitbit models by case width

  1. 1Ionic
    Ionic38.6mm wide
    Specs →
  2. 2Versa 2
    Versa 240mm wide
    Specs →
  3. 3Versa Lite
    Versa Lite40mm wide
    Specs →
  4. 4Versa
    Versa40mm wide
    Specs →
  5. 5Versa 4
    Versa 440.4mm wide
    Specs →

Thinnest Fitbit Watches

The slimmest Fitbit profiles by case thickness

  1. 1Versa Lite
    Versa Lite11.2mm thick
    Specs →
  2. 2Versa
    Versa11.2mm thick
    Specs →
  3. 3Versa 2
    Versa 212mm thick
    Specs →
  4. 4Ionic
    Ionic12.2mm thick
    Specs →
  5. 5Versa 4
    Versa 412.3mm thick
    Specs →

Best Fitbit for Small Wrists

The smallest footprints — under 46mm top to bottom

  1. 1Versa 2
    Versa 240mm wide
    Specs →
  2. 2Versa Lite
    Versa Lite40mm wide
    Specs →
  3. 3Versa
    Versa40mm wide
    Specs →
  4. 4Versa 4
    Versa 440.4mm wide
    Specs →
  5. 5Sense
    Sense40.4mm wide
    Specs →

Largest Fitbit Watches

The biggest Fitbit models for those who want presence

  1. 1Blaze
    Blaze42mm wide
    Specs →
  2. 2Ace LTE
    Ace LTE41.04mm wide
    Specs →
  3. 3Sense 2
    Sense 240.5mm wide
    Specs →
  4. 4Versa 4
    Versa 440.4mm wide
    Specs →
  5. 5Sense
    Sense40.4mm wide
    Specs →

Fitbit-sized watches from other brands

Fitbit centres on 40mm. These are the closest matches we hold elsewhere in the database — one model per brand, same footprint on the wrist.

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