New to Keto....How to set Macros

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I am new to keto. I lost 164 pounds a couple of years ago doing low carb but gained back 50 after a tragedy hit our family. I am trying to get back on the wagon and found Keto. I am Female, 52 years old, 5'5" tall and weigh 249. How do I set my Macros. Is there a Keto Calculator? Thanks

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