Which smartwatch was worst at counting calories in the study?

Garmin’s Forerunner 955 had the largest error of the four watches tested, both in raw kcal (a 68.61 kcal average miss) and as a share of true calories burned (77.6 percent), ahead of Samsung, Apple, and Fitbit.

Is Fitbit better than Garmin at counting calories?

Only if you ignore Fitbit’s worst readings. Put them back in, and Fitbit’s average miss jumps to 128.6 kcal, worse than Garmin’s 68.61 kcal.

Does body fat affect how accurate a smartwatch's calorie count is?

Yes. Every watch got less accurate as body fat rose, and Garmin and Fitbit got worse faster than Apple did.

calorie accuracy Archives -

Garmin Insider News

Garmin calories worst among four brands, science shows

3 September 2026

the5krunner

Garmin posted the largest calorie error of four major smartwatches in a new FIU accuracy study.…