Way to calculate your heart rate without a Monitor

If you have a mobile phone you can download apps to track calories burned.
Hope this helps!
Good luck.

Here is a site, not sure how good it is but here you do anyway: http://www.triathlontrainingblog.com/calculators/calories-burned-calculator-based-on-average-heart-rate/

but you need to know your VO2 max

This site may be better but I believe this calc estimates a VO2max for you. give it a try: http://www.livestrong.com/article/78365-estimate-calories-burned-heart-rate/

For females, derive the calories that you burned. This is given by the equation C = (0.4472 x H -- 0.05741 x W + 0.074 x A -- 20.4022) x T / 4.184.

Assume that you're a 28-year-old female weighing 146 pounds. Your average heart rate during an exercise session that lasted 36 minutes was 138 bpm. You burned C = (0.4472 x 138 -- 0.05741 x 146 + 0.074 x 28 -- 20.4022) x 36 / 4.184 = 301 calories.

here's a calculator to determine calories from heart rate. it's based on your average heart rate over the duration of your workout, so you might have to do a bit of guessing to get the average w/o a monitor.

http://www.triathlontrainingblog.com/calculators/calories-burned-calculator-based-on-average-heart-rate/

to calculate your beats per min, if you have a watch w/ a second hand, find your pulse and count the beats for 6 sec. multiply that number by 10 and you have your bpm.

For females, derive the calories that you burned. This is given by the equation C = (0.4472 x H -- 0.05741 x W + 0.074 x A -- 20.4022) x T / 4.184.

Assume that you're a 28-year-old female weighing 146 pounds. Your average heart rate during an exercise session that lasted 36 minutes was 138 bpm. You burned C = (0.4472 x 138 -- 0.05741 x 146 + 0.074 x 28 -- 20.4022) x 36 / 4.184 = 301 calories.

Doesn't your resting heart rate affect this as well (so that you have a standard "base')?

It should I think this calculation takes it into account, but I'm not sure what the base lines person resting HR is, and not to mention you will have to back out the calories you would have burned had you not worked out, it you plan on entering into MFP and eating your exercise calories. as this would be total calorie burn not extra calories burned.

Sorry, I should have asked that in a different thread or through a "message".

You (25yo, 119lbs) said you workout for 35 minutes with an average HR of 150.
So plugging that into the equation:

C = (0.4472 x 150 - 0.05741 x 119 + 0.074 x 25-- 20.4022) x 35 / 4.184 = 349 calories.

Im totally confused

LOL

You can find a decent price HRM w/ a chest strap at walmart for 45.00. Been using it for 7 months now and no issues!