BMR- Figuring this all out...

ebgbjo

So, I have been wanting to get my BRM checked but have no idea where do go to have it tested. Instead, I decided to strap on my Polar FT4 for part of my day to see what my readings would be for my average work day to include making breakfast then driving home and that is it.

Just in the 10 hours I have worn it, I have burned 1177 calories which comes out to 1.96166667 calories/minute, which if I multiply it by by 24, my BRM is about 2824. However, ALL sites where I put in my info (4' 11", age 32, 123lbs) BRM says I am about at 1200-1300 calories. My calorie intake here is at 1200 when not exercising.

With my Polar is giving me, do you think I need to change anything?