A lady can lose 80 pounds by walking 100,000 steps each week. So, if you walk 3 miles per hour (5 km/hour), you should be able to burn about 2,000 calories per day. Of course, there are other factors such as your age, weight and activity level that will determine how many steps you can walk in a day or in a week. To calculate the number of steps you must take to lose 1 pound of body fat, divide the amount you want to lose by 10,000. Then, multiply that number by 20. For example, if you want to lose 50 pounds, you would need to walk 200,000 steps (50 / 10,000 = 5 miles per hour). To figure out how many steps you need to walk to lose another pound, just multiply the previous result by two and round up to the nearest thousand. So, for this example, you would need to walk 250,000 steps (5 miles per hour x 200,000 = 250,000 steps). Although it may seem like a lot of steps, exercise is very important for keeping healthy. The more active you are, the more calories you will burn daily.