Need help figuring tdee

I'm a female. Age 58. 5 ft 3 in. Weight 152.6 and 39 percent body fat. I went to fat to fit radio but can't decide whether I am sedentary or lightly. Active. I walk 1.5 miles a day about three days a week. Not much else though how do I figure my tdee? Thanks. I had it figured before but got confused. Thanks.