What’s the margin of error in calories burned?

[vokeldu3]

I’d say normally, my watch (Inspire 3) says I’ve burned 3200 calories. I really don’t think that’s the case and would like a better gauge on how much I’m actually burning. Does anyone know how to calculate that or a good rule of thumb?

[JohnnyRow]

Remember Fitbit includes your BMR calories that normally account for more than half your daily calorie burn.
Also check you have entered your weight correctly.

https://support.google.com/fitbit/answer/14237111?hl=en-AU&sjid=14205407628449763946-NA#zippy=%2Chow...
"Fitbit devices combine your basal metabolic rate (BMR)—the rate at which you burn calories at rest to maintain vital body functions (including breathing, blood circulation, and heartbeat)—and your activity data to estimate your calories burned. If your device tracks heart rate, your heart-rate data is also included, especially to estimate calories burned during exercise. The number you see on your Fitbit device is your total calories burned for the day.

Your BMR is based on the physical data you entered in to your Fitbit account (height, weight, sex, and age) and accounts for at least half the calories you burn in a day. Because your body burns calories even if you’re asleep or not moving, you see calories burned on your device when you wake up and will notice this number increase throughout the day. "