To determine how many calories you should eat to lose weight
, you’ll need to do some math. Multiply your weight by 15, which is how many calories per pound of weight is needed to maintain your current weight (if you’re already exercising for 30 minutes a day). If you weigh 170 pounds, for example, your weight-maintenance calorie count is 2,550 per day. To lose weight, you’ll want to consume less than that number. However, women should aim to consume at least 1,200 calories a day, and men should consume at least 1,500, unless your doctor recommends otherwise. Your typical activity level, genetics, and other factors also play a role in weight loss, so talk to your doctor or a dietician for a safe, personalized approach to weight loss.