A ketogenic diet, or “keto” as it is often referred to as, focuses on eating foods that are very low in carbohydrates. This project is a calculator that calculates a persons ideal macronutrients for a ketogenic diet (taking in stuff like height, weight, body fat %, etc.).
For those curious on starting a ketogenic diet, here are a few resources:
https://www.dietdoctor.com/low-carb/keto
https://www.ketochow.xyz/basics-nutritional-ketosis-keto-succeed/