Use the Power Walkers World calorie calculator to estimate the number of calories burned in your workouts.
Various conditions, including terrain and temperature, can affect the actual number of calories burned, but the calorie calculator nevertheless provides a useful estimate.
The number of calories used in a workout is based primarily on how far you go, not how fast you get there. In fact, there's only a marginal difference in the number of calories burned by power walking versus running the same distance.
If you run or power walk primarily for weight control, you'll find that walking / running slow and long burns more calories than running short and fast
The calculators are are only to act as an approximate guide and can not be used to determine your actual state of health. You must seek appropriate medical advice should you have any relevant concerns.