20-Somethings - how many calories do you burn climbing stairs?

Hi! I am visiting my boyfriend this weekend and so I don't have access to the gym to do my normal cardio routine. He lives in a 16 story building so instead I thought that I'd climb the stairs about 10 times. does anyone know how good of a cardio workout this is? I searched online but it was hard to find any information about approximate calories per flight.

Thanks

Climb stairs = [5 * your weight (KG!!) * time (minutes)]/60

Wow if my maths is good with my kg I can burn 9 calories each minute. I think I am going to use my building's stairs as a workout as well (nobody ever uses them anyway)

I love this website for finding how many calories you burn. It goes by weight and time. http://www.primusweb.com/fitnesspartner/jumpsite/calculat.htm

That is a great site... thank you...