The amount of coffee beans you will need depends on the type of coffee machine you are using and the strength of brew that you prefer. Generally, for espresso machines, about 14-17 grams of beans are needed for a single shot. For filter or French press coffees, about 30-40 grams per 6 ounces (180ml) of water is recommended. With a little research and guidance from an expert, you can find the perfect coffee beans online for your needs!