It's hard to say exactly how many calories you burn doing yoga versus Pilates. Although the routines are different, Yoga and Pilates have a lot in common, namely their emphasis on mind over matter. Although neither activity is easy, they're both generally considered low- or moderate-intensity, meaning they don't burn as many calories as cardiovascular exercise.
Varying Yoga Styles
The number of calories burned in a yoga workout varies widely based on the type of yoga being practiced. Most yoga classes involve holding various poses and "flowing" between them; the "flow," or vinyasa, is where the most aerobic activity takes place. "Gentle flow" classes, Yin Yoga and other slow-paced varieties are less strenuous, whereas "Power Yoga" or Ashtanga classes are more aerobically challenging. Bikram Yoga, a class in which the room is heated to 100 degrees or more, involves less vinyasa flow but still burns calories.
Toning With Pilates
Pilates is similar to yoga, with a mental/meditative component to the moves performed, but it includes more toning exercises and targeting of your core area. The structure of a Pilates class will vary based on the instructor and the equipment available; you might use straps, balls, Pilates machines or other accessories to perform the exercises.
How many calories you burn doing a particular physical activity depends on how much you weigh and how intensely you perform the exercise. The average person burns between 120 and 220 calories per half-hour doing Pilates or yoga; however, these numbers will vary significantly based on the type of yoga or Pilates you do.
Challenging Your Body
Low-impact or low-intensity exercises burn fewer calories than high-impact activities like running, hiking, aerobics classes and sports. Consider mixing a few high-impact activities into your workout schedule if you want to burn more calories. To amp up the calorie burn in yoga and Pilates classes, try a more challenging class, do more repetitions of moves and poses, and challenge yourself to do moves and poses without modifications.