This is where you have to use math also. If you want to figure out how many mg of thc is in a stick of butter you made. 1 gram is 1000mg and what ever the percent of the bud is Thc. Example You use 4 grams of weed at say its 20%, 20% of 4000 is 800 mg of thc so in if you use a 1/2 pound of butter for the 4 grams it will contain 800 mg of thc. then divide accordenly. Also remember that edible thc metabolizes in the liver and is turned into 11 hydroxy THC its a much more potent cemical then the delta 9 thc you get from smoking or vaping. GOOD LUCK