WHICH is right HRM or gym - such a difference

Most gym equipment is calibrated for men, and does not read your heart rate constantly. I even find my treadmill really low balls my HR when I try to get a reading.

A HRM with a chest strap, that you enter age, weight, height and gender is the most accurate.

Oh and don't worry if the gym equipment was reading low. It is better to have been entering a smaller number, than to have been thinking you were burning more than you were.

I have questioned the same, so I bought myself a HRM.
(I posted this on another thread a while ago)
Here's the results from todays activities: two machines, Elliptical trainer and Treadclimber, 30 mins on each
Elliptical 508 cals, MFP 644 cals, HRM 283 cals
Treadclimber 784 cals, MFP 414 cals, HRM 260 Cals
A range between 543 cals to 1292 cals. If I were to follow the guidelines about eating exercise cals potentially I could have been eating way over my daily allowance.
So which to believe? I'm going with the HRM. At least I've a number to input here for exercise and I'll be able to handle these extra cals. Prevoiusly, at the end of some days I'd still have several 100 cals left to eat.

I usually go by the gym equipment since part of the calorie calculation is the resistance (like level 1 to 20) and incline that you're at on the machine and there's no way to enter that specific information into MFP or HRM.

I recently purchased a HRM in order to really get my heart rate up and track how long I am keeping it there. Today was the first day when I used it at the gym. It says that I burned 1647 calories. according to gym equipment i burned 898. to me this is a huge difference I have been logging gym equipment for months. each piece asks me for my weight so does my hrm so what the deal? I did not expect such a huge difference. I don't get it

HELP

Your HRM calorie number is way off. I don't know what brand you have, but the only I time I have ever seen numbers like that is when someone mistakenly chooses metric units and enters their weight as, for example, 200 kilograms rather than 200 pounds.

Here is one thing you can try. Set up a treadmill with your weight and try walking at 3.0 mph and a 6% elevation (don't hold on to the handrails). You should be burning about 9 calories per minute at that workload. Do that for at least 15 min and check the total with your HRM. You should be at about 135 calories after 15 min (give or take a few). If your HRM is way off, then you need to check your setup first.