Calories burn doin weights

hr moniter??

That's really hard to tell. Unlike cardio where it's a lot easier to tell what level of intensity you are at (like running a 10 minute mile), lifting is more complex. It depends on:

#1- The total load on the muscle vs your strength
#2- The volume (how many sets and reps)
#3- Technique, good or bad technique can affect calorie burn
#4- The type of lifts. Compound lifts like squats, deadlfts and bench burn more than isolation lifts like a biceps curl.
#5- Rest between reps and sets.
#6- Residual burn. You burn calories as a result of lifting for about 48 hrs after you finish as a result of hypertrophy and recovery.
#7- Muscle mass

There are more but these are the major ones.

So, there isn't really any accurate way to measure how many calories you burn lifting. Bigger, more well muscled guys probably burn as many or more calories lifting as they would doing cardio.

A bodybugg will probably give you the best estimate, but that's all it is.

Sigh, the strength training cardio calories here cannot possibly be right. I'm not saying they're too high or too low, but as my personal weight decreases, the weights I'm using increase, so I can't imagine that the calorie burn is going down all the time as the site suggests it does. Unfortunately, I can't afford a HRM at this time. Oh, well.

I've always wondered about this myself too. I do strength training every day, alternating between toning one day with light weights, and increasing load the next day. I know I am burning calories but the site offers no way to even guesstimate it.