How many calories should a 5' tall 18 year old female who weighs 145 pounds consume to lose 40 pounds in 2 weeks?

if you're 18, you should know there is absolutely no way to lose 40 lbs in two weeks. Did you mean two months? because even that is unhealthy. At 5' anyway you shouldn't way 105lbs, too skinny. Talk to your doctor, you should only lose about 2-3lbs a week the healthy way.