Spin class tracking very few calories in my Surge

[Walta01]

Why are the calories burned in spin class so inaccurate? How could I possibly burn more calories on walk than spin class? Is there a way to adjust the calories so I can use the quick set on my device and not have to enter manually?

Moderator edit: Clarified subject.

[YojanaFitbit]

It's great to see you here in the Community @Walta01, welcome! When you're tracking "Spinning" workouts your Surge takes the movements of your body plus your HR (heart rate) information. So, it'll depend of the intensity of the workout that you will get more calories. Calories can not be modified before the activity only after you sync your Surge, so you can see the data in your Fitbit Account

Note that while you are doing exercise on your stationary bike there is no motion of going forward that your Surge can detect. Your tracker in the most basic form is a movement sensor and if the movement is reduce, in example: doing spinning; where your hands wont move in the same way when you walk it will have an impact, so the calories will be affected. If you believe that your calories burned per minute are not accurate, it's best to keep adjusting your calories manually.

See ya later, I'll be around.  

[Walta01]

Yes, I am using the multi-sport option from my surge.