https://keto-calculator.ankerl.com/
Put your age, weight, and height in there then follow the rest of the guide. It will tell you. Generally in order for low-carb to work, your body has to be in ketosis. Which means eating no more than 25g of carbohydrates. Most people I know try to keep it under 15g, And with any diet, what really matters is how many calories you're eating so buy a food scale and weigh your food.