According to Fitday that is what I am doing today.

I did some HIIT training this morning for 20-25 minutes. I entered this as 25mins of 8mph running. Fitday suggests this is 550 calories or there about.
I also walk about a lot and Fitday says 214cals from 30mins walking (sure I am doing well)
The big one is playing Soccer tonight for 1.5hours in a league match tonight, which Fitday returns as around 1400 cals.
I remember the total as 2033 calories burned in cardio, I am wondering how accurate that is. I'm 231lbs, LBM 191lbs.
I am very cardio fit, if I do say so myself, and tend to run about a lot, but will I be burning that many cals?

According to Fitday that is what I am doing today.

I did some HIIT training this morning for 20-25 minutes. I entered this as 25mins of 8mph running. Fitday suggests this is 550 calories or there about.
I also walk about a lot and Fitday says 214cals from 30mins walking (sure I am doing well)
The big one is playing Soccer tonight for 1.5hours in a league match tonight, which Fitday returns as around 1400 cals.
I remember the total as 2033 calories burned in cardio, I am wondering how accurate that is. I'm 231lbs, LBM 191lbs.
I am very cardio fit, if I do say so myself, and tend to run about a lot, but will I be burning that many cals?

There really is nothing that is accurate. Everything is compiled based on average statistics. You will burn a different rate of calories depending on your lung capacity, your heart rate, your level of fitness, your weight, you name it. So no, if FitDay or your cardio machine or anything else says you burned 550 calories, it's probably not accurate.

On the other hand, it doesn't have to be. The key is consistency, and it is more important what you do relative to the LAST workout than the "absolute" calories. In other words, if you consistently log that session as 550, that's fine. If you use FitDay and suddenly log 600 calories, it is probably true that did exert more effort and burn more calories. So while it may not be exactly 600, it is 50 more than the last session, and relatively speaking it is probably a good shot at what you are doing.

Consistency. Always try to do a little more from week to week.

Jeremy

I know that if I ran for 25m in at 8 mph I'm sure I'd burn 550 calories. I'd question if you really did that distance though - it's a very fast pace for fully 25 minutes and the vast majority of people would be coughing up a lung and/or other organs trying it. Really fit people wouldn't have a problem, but that is a pretty serious run :D I guess you sound pretty fit though.

1400 calories from soccer I would think a pro would burn that much, but it depends how intense your game was!

Thanks for your answer Jeremy :)

Skoorb: I am very fit in cardio terms thankfully :) Even at 266lbs I could run 3 miles in 24mins easily. I've never actually stopped running, I ran 6 times a week before I started weight training and am now doing it again to improve my cutting. As I have now dropped to 231lbs I find it even easier. My HIIT basically involves 8x100m sprints at 100% with 150m recovery run between each sprint at 50-60% and 6 minutes jogging at around 6mph. I basically took 8mph as an average, though it may be less :) The football is very competitive, but not pro level - however I tend to make a point of running more than anyone else.
At soccer I'm almost always the fastest and fittest there, though I don't look it - but three months from now... :D